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Linux 3.17-rc4

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Merge tag 'v3.17-rc4' into perf/core, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2014-09-09 06:48:07 +02:00
commit bdea534db8
570 changed files with 5124 additions and 2859 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Documentation/SubmittingPatches
View File

@ -794,6 +794,7 @@ Greg Kroah-Hartman, "How to piss off a kernel subsystem maintainer".
<http://www.kroah.com/log/linux/maintainer-03.html>
<http://www.kroah.com/log/linux/maintainer-04.html>
<http://www.kroah.com/log/linux/maintainer-05.html>
<http://www.kroah.com/log/linux/maintainer-06.html>
NO!!!! No more huge patch bombs to linux-kernel@vger.kernel.org people!
<https://lkml.org/lkml/2005/7/11/336>

11
Documentation/devicetree/bindings/input/atmel,maxtouch.txt
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@ -15,6 +15,17 @@ Optional properties for main touchpad device:
keycode generated by each GPIO. Linux keycodes are defined in
<dt-bindings/input/input.h>.
- linux,gpio-keymap: When enabled, the SPT_GPIOPWN_T19 object sends messages
on GPIO bit changes. An array of up to 8 entries can be provided
indicating the Linux keycode mapped to each bit of the status byte,
starting at the LSB. Linux keycodes are defined in
<dt-bindings/input/input.h>.
Note: the numbering of the GPIOs and the bit they start at varies between
maXTouch devices. You must either refer to the documentation, or
experiment to determine which bit corresponds to which input. Use
KEY_RESERVED for unused padding values.
Example:
touch@4b {

107
Documentation/devicetree/bindings/mfd/tc3589x.txt Normal file
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@ -0,0 +1,107 @@
* Toshiba TC3589x multi-purpose expander
The Toshiba TC3589x series are I2C-based MFD devices which may expose the
following built-in devices: gpio, keypad, rotator (vibrator), PWM (for
e.g. LEDs or vibrators) The included models are:
- TC35890
- TC35892
- TC35893
- TC35894
- TC35895
- TC35896
Required properties:
- compatible : must be "toshiba,tc35890", "toshiba,tc35892", "toshiba,tc35893",
"toshiba,tc35894", "toshiba,tc35895" or "toshiba,tc35896"
- reg : I2C address of the device
- interrupt-parent : specifies which IRQ controller we're connected to
- interrupts : the interrupt on the parent the controller is connected to
- interrupt-controller : marks the device node as an interrupt controller
- #interrupt-cells : should be <1>, the first cell is the IRQ offset on this
TC3589x interrupt controller.
Optional nodes:
- GPIO
This GPIO module inside the TC3589x has 24 (TC35890, TC35892) or 20
(other models) GPIO lines.
- compatible : must be "toshiba,tc3589x-gpio"
- interrupts : interrupt on the parent, which must be the tc3589x MFD device
- interrupt-controller : marks the device node as an interrupt controller
- #interrupt-cells : should be <2>, the first cell is the IRQ offset on this
TC3589x GPIO interrupt controller, the second cell is the interrupt flags
in accordance with <dt-bindings/interrupt-controller/irq.h>. The following
flags are valid:
- IRQ_TYPE_LEVEL_LOW
- IRQ_TYPE_LEVEL_HIGH
- IRQ_TYPE_EDGE_RISING
- IRQ_TYPE_EDGE_FALLING
- IRQ_TYPE_EDGE_BOTH
- gpio-controller : marks the device node as a GPIO controller
- #gpio-cells : should be <2>, the first cell is the GPIO offset on this
GPIO controller, the second cell is the flags.
- Keypad
This keypad is the same on all variants, supporting up to 96 different
keys. The linux-specific properties are modeled on those already existing
in other input drivers.
- compatible : must be "toshiba,tc3589x-keypad"
- debounce-delay-ms : debounce interval in milliseconds
- keypad,num-rows : number of rows in the matrix, see
bindings/input/matrix-keymap.txt
- keypad,num-columns : number of columns in the matrix, see
bindings/input/matrix-keymap.txt
- linux,keymap: the definition can be found in
bindings/input/matrix-keymap.txt
- linux,no-autorepeat: do no enable autorepeat feature.
- linux,wakeup: use any event on keypad as wakeup event.
Example:
tc35893@44 {
compatible = "toshiba,tc35893";
reg = <0x44>;
interrupt-parent = <&gpio6>;
interrupts = <26 IRQ_TYPE_EDGE_RISING>;
interrupt-controller;
#interrupt-cells = <1>;
tc3589x_gpio {
compatible = "toshiba,tc3589x-gpio";
interrupts = <0>;
interrupt-controller;
#interrupt-cells = <2>;
gpio-controller;
#gpio-cells = <2>;
};
tc3589x_keypad {
compatible = "toshiba,tc3589x-keypad";
interrupts = <6>;
debounce-delay-ms = <4>;
keypad,num-columns = <8>;
keypad,num-rows = <8>;
linux,no-autorepeat;
linux,wakeup;
linux,keymap = <0x0301006b
0x04010066
0x06040072
0x040200d7
0x0303006a
0x0205000e
0x0607008b
0x0500001c
0x0403000b
0x03040034
0x05020067
0x0305006c
0x040500e7
0x0005009e
0x06020073
0x01030039
0x07060069
0x050500d9>;
};
};

2
Documentation/devicetree/bindings/mtd/gpmc-nand.txt
View File

@ -22,7 +22,7 @@ Optional properties:
width of 8 is assumed.
- ti,nand-ecc-opt: A string setting the ECC layout to use. One of:
"sw" <deprecated> use "ham1" instead
"sw" 1-bit Hamming ecc code via software
"hw" <deprecated> use "ham1" instead
"hw-romcode" <deprecated> use "ham1" instead
"ham1" 1-bit Hamming ecc code

2
Documentation/devicetree/bindings/pinctrl/qcom,apq8064-pinctrl.txt
View File

@ -62,7 +62,7 @@ Example:
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
interrupts = <0 32 0x4>;
interrupts = <0 16 0x4>;
pinctrl-names = "default";
pinctrl-0 = <&gsbi5_uart_default>;

4
Documentation/devicetree/bindings/regulator/tps65090.txt
View File

@ -45,8 +45,8 @@ Example:
infet5-supply = <&some_reg>;
infet6-supply = <&some_reg>;
infet7-supply = <&some_reg>;
vsys_l1-supply = <&some_reg>;
vsys_l2-supply = <&some_reg>;
vsys-l1-supply = <&some_reg>;
vsys-l2-supply = <&some_reg>;
regulators {
dcdc1 {

2
Documentation/devicetree/bindings/sound/adi,axi-spdif-tx.txt
View File

@ -1,7 +1,7 @@
ADI AXI-SPDIF controller
Required properties:
- compatible : Must be "adi,axi-spdif-1.00.a"
- compatible : Must be "adi,axi-spdif-tx-1.00.a"
- reg : Must contain SPDIF core's registers location and length
- clocks : Pairs of phandle and specifier referencing the controller's clocks.
The controller expects two clocks, the clock used for the AXI interface and

14
Documentation/dma-buf-sharing.txt
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@ -56,10 +56,10 @@ The dma_buf buffer sharing API usage contains the following steps:
size_t size, int flags,
const char *exp_name)
If this succeeds, dma_buf_export allocates a dma_buf structure, and returns a
pointer to the same. It also associates an anonymous file with this buffer,
so it can be exported. On failure to allocate the dma_buf object, it returns
NULL.
If this succeeds, dma_buf_export_named allocates a dma_buf structure, and
returns a pointer to the same. It also associates an anonymous file with this
buffer, so it can be exported. On failure to allocate the dma_buf object,
it returns NULL.
'exp_name' is the name of exporter - to facilitate information while
debugging.
@ -76,7 +76,7 @@ The dma_buf buffer sharing API usage contains the following steps:
drivers and/or processes.
Interface:
int dma_buf_fd(struct dma_buf *dmabuf)
int dma_buf_fd(struct dma_buf *dmabuf, int flags)
This API installs an fd for the anonymous file associated with this buffer;
returns either 'fd', or error.
@ -157,7 +157,9 @@ to request use of buffer for allocation.
"dma_buf->ops->" indirection from the users of this interface.
In struct dma_buf_ops, unmap_dma_buf is defined as
void (*unmap_dma_buf)(struct dma_buf_attachment *, struct sg_table *);
void (*unmap_dma_buf)(struct dma_buf_attachment *,
struct sg_table *,
enum dma_data_direction);
unmap_dma_buf signifies the end-of-DMA for the attachment provided. Like
map_dma_buf, this API also must be implemented by the exporter.

16
Documentation/filesystems/nfs/nfs-rdma.txt
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@ -138,9 +138,9 @@ Installation
- Build, install, reboot
The NFS/RDMA code will be enabled automatically if NFS and RDMA
are turned on. The NFS/RDMA client and server are configured via the hidden
SUNRPC_XPRT_RDMA config option that depends on SUNRPC and INFINIBAND. The
value of SUNRPC_XPRT_RDMA will be:
are turned on. The NFS/RDMA client and server are configured via the
SUNRPC_XPRT_RDMA_CLIENT and SUNRPC_XPRT_RDMA_SERVER config options that both
depend on SUNRPC and INFINIBAND. The default value of both options will be:
- N if either SUNRPC or INFINIBAND are N, in this case the NFS/RDMA client
and server will not be built
@ -235,8 +235,9 @@ NFS/RDMA Setup
- Start the NFS server
If the NFS/RDMA server was built as a module (CONFIG_SUNRPC_XPRT_RDMA=m in
kernel config), load the RDMA transport module:
If the NFS/RDMA server was built as a module
(CONFIG_SUNRPC_XPRT_RDMA_SERVER=m in kernel config), load the RDMA
transport module:
$ modprobe svcrdma
@ -255,8 +256,9 @@ NFS/RDMA Setup
- On the client system
If the NFS/RDMA client was built as a module (CONFIG_SUNRPC_XPRT_RDMA=m in
kernel config), load the RDMA client module:
If the NFS/RDMA client was built as a module
(CONFIG_SUNRPC_XPRT_RDMA_CLIENT=m in kernel config), load the RDMA client
module:
$ modprobe xprtrdma.ko

33
Documentation/filesystems/seq_file.txt
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@ -235,6 +235,39 @@ be used for more than one file, you can store an arbitrary pointer in the
private field of the seq_file structure; that value can then be retrieved
by the iterator functions.
There is also a wrapper function to seq_open() called seq_open_private(). It
kmallocs a zero filled block of memory and stores a pointer to it in the
private field of the seq_file structure, returning 0 on success. The
block size is specified in a third parameter to the function, e.g.:
static int ct_open(struct inode *inode, struct file *file)
{
return seq_open_private(file, &ct_seq_ops,
sizeof(struct mystruct));
}
There is also a variant function, __seq_open_private(), which is functionally
identical except that, if successful, it returns the pointer to the allocated
memory block, allowing further initialisation e.g.:
static int ct_open(struct inode *inode, struct file *file)
{
struct mystruct *p =
__seq_open_private(file, &ct_seq_ops, sizeof(*p));
if (!p)
return -ENOMEM;
p->foo = bar; /* initialize my stuff */
...
p->baz = true;
return 0;
}
A corresponding close function, seq_release_private() is available which
frees the memory allocated in the corresponding open.
The other operations of interest - read(), llseek(), and release() - are
all implemented by the seq_file code itself. So a virtual file's
file_operations structure will look like:

24
Documentation/gpio/consumer.txt
View File

@ -53,7 +53,20 @@ with IS_ERR() (they will never return a NULL pointer). -ENOENT will be returned
if and only if no GPIO has been assigned to the device/function/index triplet,
other error codes are used for cases where a GPIO has been assigned but an error
occurred while trying to acquire it. This is useful to discriminate between mere
errors and an absence of GPIO for optional GPIO parameters.
errors and an absence of GPIO for optional GPIO parameters. For the common
pattern where a GPIO is optional, the gpiod_get_optional() and
gpiod_get_index_optional() functions can be used. These functions return NULL
instead of -ENOENT if no GPIO has been assigned to the requested function:
struct gpio_desc *gpiod_get_optional(struct device *dev,
const char *con_id,
enum gpiod_flags flags)
struct gpio_desc *gpiod_get_index_optional(struct device *dev,
const char *con_id,
unsigned int index,
enum gpiod_flags flags)
Device-managed variants of these functions are also defined:
@ -65,6 +78,15 @@ Device-managed variants of these functions are also defined:
unsigned int idx,
enum gpiod_flags flags)
struct gpio_desc *devm_gpiod_get_optional(struct device *dev,
const char *con_id,
enum gpiod_flags flags)
struct gpio_desc * devm_gpiod_get_index_optional(struct device *dev,
const char *con_id,
unsigned int index,
enum gpiod_flags flags)
A GPIO descriptor can be disposed of using the gpiod_put() function:
void gpiod_put(struct gpio_desc *desc)

10
Documentation/i2c/dev-interface
View File

@ -57,12 +57,12 @@ Well, you are all set up now. You can now use SMBus commands or plain
I2C to communicate with your device. SMBus commands are preferred if
the device supports them. Both are illustrated below.
__u8 register = 0x10; /* Device register to access */
__u8 reg = 0x10; /* Device register to access */
__s32 res;
char buf[10];
/* Using SMBus commands */
res = i2c_smbus_read_word_data(file, register);
res = i2c_smbus_read_word_data(file, reg);
if (res < 0) {
/* ERROR HANDLING: i2c transaction failed */
} else {
@ -70,11 +70,11 @@ the device supports them. Both are illustrated below.
}
/* Using I2C Write, equivalent of
i2c_smbus_write_word_data(file, register, 0x6543) */
buf[0] = register;
i2c_smbus_write_word_data(file, reg, 0x6543) */
buf[0] = reg;
buf[1] = 0x43;
buf[2] = 0x65;
if (write(file, buf, 3) ! =3) {
if (write(file, buf, 3) != 3) {
/* ERROR HANDLING: i2c transaction failed */
}

36
Documentation/kdump/kdump.txt
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@ -18,7 +18,7 @@ memory image to a dump file on the local disk, or across the network to
a remote system.
Kdump and kexec are currently supported on the x86, x86_64, ppc64, ia64,
and s390x architectures.
s390x and arm architectures.
When the system kernel boots, it reserves a small section of memory for
the dump-capture kernel. This ensures that ongoing Direct Memory Access
@ -112,7 +112,7 @@ There are two possible methods of using Kdump.
2) Or use the system kernel binary itself as dump-capture kernel and there is
no need to build a separate dump-capture kernel. This is possible
only with the architectures which support a relocatable kernel. As
of today, i386, x86_64, ppc64 and ia64 architectures support relocatable
of today, i386, x86_64, ppc64, ia64 and arm architectures support relocatable
kernel.
Building a relocatable kernel is advantageous from the point of view that
@ -241,6 +241,13 @@ Dump-capture kernel config options (Arch Dependent, ia64)
kernel will be aligned to 64Mb, so if the start address is not then
any space below the alignment point will be wasted.
Dump-capture kernel config options (Arch Dependent, arm)
----------------------------------------------------------
- To use a relocatable kernel,
Enable "AUTO_ZRELADDR" support under "Boot" options:
AUTO_ZRELADDR=y
Extended crashkernel syntax
===========================
@ -256,6 +263,10 @@ The syntax is:
crashkernel=<range1>:<size1>[,<range2>:<size2>,...][@offset]
range=start-[end]
Please note, on arm, the offset is required.
crashkernel=<range1>:<size1>[,<range2>:<size2>,...]@offset
range=start-[end]
'start' is inclusive and 'end' is exclusive.
For example:
@ -296,6 +307,12 @@ Boot into System Kernel
on the memory consumption of the kdump system. In general this is not
dependent on the memory size of the production system.
On arm, use "crashkernel=Y@X". Note that the start address of the kernel
will be aligned to 128MiB (0x08000000), so if the start address is not then
any space below the alignment point may be overwritten by the dump-capture kernel,
which means it is possible that the vmcore is not that precise as expected.
Load the Dump-capture Kernel
============================
@ -315,7 +332,8 @@ For ia64:
- Use vmlinux or vmlinuz.gz
For s390x:
- Use image or bzImage
For arm:
- Use zImage
If you are using a uncompressed vmlinux image then use following command
to load dump-capture kernel.
@ -331,6 +349,15 @@ to load dump-capture kernel.
--initrd=<initrd-for-dump-capture-kernel> \
--append="root=<root-dev> <arch-specific-options>"
If you are using a compressed zImage, then use following command
to load dump-capture kernel.
kexec --type zImage -p <dump-capture-kernel-bzImage> \
--initrd=<initrd-for-dump-capture-kernel> \
--dtb=<dtb-for-dump-capture-kernel> \
--append="root=<root-dev> <arch-specific-options>"
Please note, that --args-linux does not need to be specified for ia64.
It is planned to make this a no-op on that architecture, but for now
it should be omitted
@ -347,6 +374,9 @@ For ppc64:
For s390x:
"1 maxcpus=1 cgroup_disable=memory"
For arm:
"1 maxcpus=1 reset_devices"
Notes on loading the dump-capture kernel:
* By default, the ELF headers are stored in ELF64 format to support

2
Documentation/misc-devices/lis3lv02d
View File

@ -59,7 +59,7 @@ acts similar to /dev/rtc and reacts on free-fall interrupts received
from the device. It supports blocking operations, poll/select and
fasync operation modes. You must read 1 bytes from the device. The
result is number of free-fall interrupts since the last successful
read (or 255 if number of interrupts would not fit). See the hpfall.c
read (or 255 if number of interrupts would not fit). See the freefall.c
file for an example on using the device.

7
Documentation/power/regulator/consumer.txt
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@ -143,8 +143,9 @@ This will cause the core to recalculate the total load on the regulator (based
on all its consumers) and change operating mode (if necessary and permitted)
to best match the current operating load.
The load_uA value can be determined from the consumers datasheet. e.g.most
datasheets have tables showing the max current consumed in certain situations.
The load_uA value can be determined from the consumer's datasheet. e.g. most
datasheets have tables showing the maximum current consumed in certain
situations.
Most consumers will use indirect operating mode control since they have no
knowledge of the regulator or whether the regulator is shared with other
@ -173,7 +174,7 @@ Consumers can register interest in regulator events by calling :-
int regulator_register_notifier(struct regulator *regulator,
struct notifier_block *nb);
Consumers can uregister interest by calling :-
Consumers can unregister interest by calling :-
int regulator_unregister_notifier(struct regulator *regulator,
struct notifier_block *nb);

8
Documentation/power/regulator/design.txt
View File

@ -9,14 +9,14 @@ Safety
- Errors in regulator configuration can have very serious consequences
for the system, potentially including lasting hardware damage.
- It is not possible to automatically determine the power confugration
- It is not possible to automatically determine the power configuration
of the system - software-equivalent variants of the same chip may
have different power requirments, and not all components with power
have different power requirements, and not all components with power
requirements are visible to software.
=> The API should make no changes to the hardware state unless it has
specific knowledge that these changes are safe to do perform on
this particular system.
specific knowledge that these changes are safe to perform on this
particular system.
Consumer use cases
------------------

4
Documentation/power/regulator/machine.txt
View File

@ -11,7 +11,7 @@ Consider the following machine :-
+-> [Consumer B @ 3.3V]
The drivers for consumers A & B must be mapped to the correct regulator in
order to control their power supply. This mapping can be achieved in machine
order to control their power supplies. This mapping can be achieved in machine
initialisation code by creating a struct regulator_consumer_supply for
each regulator.
@ -39,7 +39,7 @@ to the 'Vcc' supply for Consumer A.
Constraints can now be registered by defining a struct regulator_init_data
for each regulator power domain. This structure also maps the consumers
to their supply regulator :-
to their supply regulators :-
static struct regulator_init_data regulator1_data = {
.constraints = {

6
Documentation/power/regulator/overview.txt
View File

@ -36,11 +36,11 @@ Some terms used in this document:-
Consumers can be classified into two types:-
Static: consumer does not change its supply voltage or
current limit. It only needs to enable or disable it's
current limit. It only needs to enable or disable its
power supply. Its supply voltage is set by the hardware,
bootloader, firmware or kernel board initialisation code.
Dynamic: consumer needs to change it's supply voltage or
Dynamic: consumer needs to change its supply voltage or
current limit to meet operation demands.
@ -156,7 +156,7 @@ relevant to non SoC devices and is split into the following four interfaces:-
This interface is for machine specific code and allows the creation of
voltage/current domains (with constraints) for each regulator. It can
provide regulator constraints that will prevent device damage through
overvoltage or over current caused by buggy client drivers. It also
overvoltage or overcurrent caused by buggy client drivers. It also
allows the creation of a regulator tree whereby some regulators are
supplied by others (similar to a clock tree).

6
Documentation/power/regulator/regulator.txt
View File

@ -13,7 +13,7 @@ Drivers can register a regulator by calling :-
struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
const struct regulator_config *config);
This will register the regulators capabilities and operations to the regulator
This will register the regulator's capabilities and operations to the regulator
core.
Regulators can be unregistered by calling :-
@ -23,8 +23,8 @@ void regulator_unregister(struct regulator_dev *rdev);
Regulator Events
================
Regulators can send events (e.g. over temp, under voltage, etc) to consumer
drivers by calling :-
Regulators can send events (e.g. overtemperature, undervoltage, etc) to
consumer drivers by calling :-
int regulator_notifier_call_chain(struct regulator_dev *rdev,
unsigned long event, void *data);

209
Documentation/this_cpu_ops.txt
View File

@ -2,26 +2,26 @@ this_cpu operations
-------------------
this_cpu operations are a way of optimizing access to per cpu
variables associated with the *currently* executing processor through
the use of segment registers (or a dedicated register where the cpu
permanently stored the beginning of the per cpu area for a specific
processor).
variables associated with the *currently* executing processor. This is
done through the use of segment registers (or a dedicated register where
the cpu permanently stored the beginning of the per cpu area for a
specific processor).
The this_cpu operations add a per cpu variable offset to the processor
specific percpu base and encode that operation in the instruction
this_cpu operations add a per cpu variable offset to the processor
specific per cpu base and encode that operation in the instruction
operating on the per cpu variable.
This means there are no atomicity issues between the calculation of
This means that there are no atomicity issues between the calculation of
the offset and the operation on the data. Therefore it is not
necessary to disable preempt or interrupts to ensure that the
necessary to disable preemption or interrupts to ensure that the
processor is not changed between the calculation of the address and
the operation on the data.
Read-modify-write operations are of particular interest. Frequently
processors have special lower latency instructions that can operate
without the typical synchronization overhead but still provide some
sort of relaxed atomicity guarantee. The x86 for example can execute
RMV (Read Modify Write) instructions like inc/dec/cmpxchg without the
without the typical synchronization overhead, but still provide some
sort of relaxed atomicity guarantees. The x86, for example, can execute
RMW (Read Modify Write) instructions like inc/dec/cmpxchg without the
lock prefix and the associated latency penalty.
Access to the variable without the lock prefix is not synchronized but
@ -30,6 +30,38 @@ data specific to the currently executing processor. Only the current
processor should be accessing that variable and therefore there are no
concurrency issues with other processors in the system.
Please note that accesses by remote processors to a per cpu area are
exceptional situations and may impact performance and/or correctness
(remote write operations) of local RMW operations via this_cpu_*.
The main use of the this_cpu operations has been to optimize counter
operations.
The following this_cpu() operations with implied preemption protection
are defined. These operations can be used without worrying about
preemption and interrupts.
this_cpu_add()
this_cpu_read(pcp)
this_cpu_write(pcp, val)
this_cpu_add(pcp, val)
this_cpu_and(pcp, val)
this_cpu_or(pcp, val)
this_cpu_add_return(pcp, val)
this_cpu_xchg(pcp, nval)
this_cpu_cmpxchg(pcp, oval, nval)
this_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
this_cpu_sub(pcp, val)
this_cpu_inc(pcp)
this_cpu_dec(pcp)
this_cpu_sub_return(pcp, val)
this_cpu_inc_return(pcp)
this_cpu_dec_return(pcp)
Inner working of this_cpu operations
------------------------------------
On x86 the fs: or the gs: segment registers contain the base of the
per cpu area. It is then possible to simply use the segment override
to relocate a per cpu relative address to the proper per cpu area for
@ -48,22 +80,21 @@ results in a single instruction
mov ax, gs:[x]
instead of a sequence of calculation of the address and then a fetch
from that address which occurs with the percpu operations. Before
from that address which occurs with the per cpu operations. Before
this_cpu_ops such sequence also required preempt disable/enable to
prevent the kernel from moving the thread to a different processor
while the calculation is performed.
The main use of the this_cpu operations has been to optimize counter
operations.
Consider the following this_cpu operation:
this_cpu_inc(x)
results in the following single instruction (no lock prefix!)
The above results in the following single instruction (no lock prefix!)
inc gs:[x]
instead of the following operations required if there is no segment
register.
register:
int *y;
int cpu;
@ -73,10 +104,10 @@ register.
(*y)++;
put_cpu();
Note that these operations can only be used on percpu data that is
Note that these operations can only be used on per cpu data that is
reserved for a specific processor. Without disabling preemption in the
surrounding code this_cpu_inc() will only guarantee that one of the
percpu counters is correctly incremented. However, there is no
per cpu counters is correctly incremented. However, there is no
guarantee that the OS will not move the process directly before or
after the this_cpu instruction is executed. In general this means that
the value of the individual counters for each processor are
@ -86,9 +117,9 @@ that is of interest.
Per cpu variables are used for performance reasons. Bouncing cache
lines can be avoided if multiple processors concurrently go through
the same code paths. Since each processor has its own per cpu
variables no concurrent cacheline updates take place. The price that
variables no concurrent cache line updates take place. The price that
has to be paid for this optimization is the need to add up the per cpu
counters when the value of the counter is needed.
counters when the value of a counter is needed.
Special operations:
@ -100,33 +131,39 @@ Takes the offset of a per cpu variable (&x !) and returns the address
of the per cpu variable that belongs to the currently executing
processor. this_cpu_ptr avoids multiple steps that the common
get_cpu/put_cpu sequence requires. No processor number is
available. Instead the offset of the local per cpu area is simply
added to the percpu offset.
available. Instead, the offset of the local per cpu area is simply
added to the per cpu offset.
Note that this operation is usually used in a code segment when
preemption has been disabled. The pointer is then used to
access local per cpu data in a critical section. When preemption
is re-enabled this pointer is usually no longer useful since it may
no longer point to per cpu data of the current processor.
Per cpu variables and offsets
-----------------------------
Per cpu variables have *offsets* to the beginning of the percpu
Per cpu variables have *offsets* to the beginning of the per cpu
area. They do not have addresses although they look like that in the
code. Offsets cannot be directly dereferenced. The offset must be
added to a base pointer of a percpu area of a processor in order to
added to a base pointer of a per cpu area of a processor in order to
form a valid address.
Therefore the use of x or &x outside of the context of per cpu
operations is invalid and will generally be treated like a NULL
pointer dereference.
In the context of per cpu operations
DEFINE_PER_CPU(int, x);
x is a per cpu variable. Most this_cpu operations take a cpu
variable.
In the context of per cpu operations the above implies that x is a per
cpu variable. Most this_cpu operations take a cpu variable.
&x is the *offset* a per cpu variable. this_cpu_ptr() takes
the offset of a per cpu variable which makes this look a bit
strange.
int __percpu *p = &x;
&x and hence p is the *offset* of a per cpu variable. this_cpu_ptr()
takes the offset of a per cpu variable which makes this look a bit
strange.
Operations on a field of a per cpu structure
@ -152,7 +189,7 @@ If we have an offset to struct s:
struct s __percpu *ps = &p;
z = this_cpu_dec(ps->m);
this_cpu_dec(ps->m);
z = this_cpu_inc_return(ps->n);
@ -172,29 +209,52 @@ if we do not make use of this_cpu ops later to manipulate fields:
Variants of this_cpu ops
-------------------------
this_cpu ops are interrupt safe. Some architecture do not support
this_cpu ops are interrupt safe. Some architectures do not support
these per cpu local operations. In that case the operation must be
replaced by code that disables interrupts, then does the operations
that are guaranteed to be atomic and then reenable interrupts. Doing
that are guaranteed to be atomic and then re-enable interrupts. Doing
so is expensive. If there are other reasons why the scheduler cannot
change the processor we are executing on then there is no reason to
disable interrupts. For that purpose the __this_cpu operations are
provided. For example.
disable interrupts. For that purpose the following __this_cpu operations
are provided.
__this_cpu_inc(x);
These operations have no guarantee against concurrent interrupts or
preemption. If a per cpu variable is not used in an interrupt context
and the scheduler cannot preempt, then they are safe. If any interrupts
still occur while an operation is in progress and if the interrupt too
modifies the variable, then RMW actions can not be guaranteed to be
safe.
Will increment x and will not fallback to code that disables
__this_cpu_add()
__this_cpu_read(pcp)
__this_cpu_write(pcp, val)
__this_cpu_add(pcp, val)
__this_cpu_and(pcp, val)
__this_cpu_or(pcp, val)
__this_cpu_add_return(pcp, val)
__this_cpu_xchg(pcp, nval)
__this_cpu_cmpxchg(pcp, oval, nval)
__this_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
__this_cpu_sub(pcp, val)
__this_cpu_inc(pcp)
__this_cpu_dec(pcp)
__this_cpu_sub_return(pcp, val)
__this_cpu_inc_return(pcp)
__this_cpu_dec_return(pcp)
Will increment x and will not fall-back to code that disables
interrupts on platforms that cannot accomplish atomicity through
address relocation and a Read-Modify-Write operation in the same
instruction.
&this_cpu_ptr(pp)->n vs this_cpu_ptr(&pp->n)
--------------------------------------------
The first operation takes the offset and forms an address and then
adds the offset of the n field.
adds the offset of the n field. This may result in two add
instructions emitted by the compiler.
The second one first adds the two offsets and then does the
relocation. IMHO the second form looks cleaner and has an easier time
@ -202,4 +262,73 @@ with (). The second form also is consistent with the way
this_cpu_read() and friends are used.
Christoph Lameter, April 3rd, 2013
Remote access to per cpu data
------------------------------
Per cpu data structures are designed to be used by one cpu exclusively.
If you use the variables as intended, this_cpu_ops() are guaranteed to
be "atomic" as no other CPU has access to these data structures.
There are special cases where you might need to access per cpu data
structures remotely. It is usually safe to do a remote read access
and that is frequently done to summarize counters. Remote write access
something which could be problematic because this_cpu ops do not
have lock semantics. A remote write may interfere with a this_cpu
RMW operation.
Remote write accesses to percpu data structures are highly discouraged
unless absolutely necessary. Please consider using an IPI to wake up
the remote CPU and perform the update to its per cpu area.
To access per-cpu data structure remotely, typically the per_cpu_ptr()
function is used:
DEFINE_PER_CPU(struct data, datap);
struct data *p = per_cpu_ptr(&datap, cpu);
This makes it explicit that we are getting ready to access a percpu
area remotely.
You can also do the following to convert the datap offset to an address
struct data *p = this_cpu_ptr(&datap);
but, passing of pointers calculated via this_cpu_ptr to other cpus is
unusual and should be avoided.
Remote access are typically only for reading the status of another cpus
per cpu data. Write accesses can cause unique problems due to the
relaxed synchronization requirements for this_cpu operations.
One example that illustrates some concerns with write operations is
the following scenario that occurs because two per cpu variables
share a cache-line but the relaxed synchronization is applied to
only one process updating the cache-line.
Consider the following example
struct test {
atomic_t a;
int b;
};
DEFINE_PER_CPU(struct test, onecacheline);
There is some concern about what would happen if the field 'a' is updated
remotely from one processor and the local processor would use this_cpu ops
to update field b. Care should be taken that such simultaneous accesses to
data within the same cache line are avoided. Also costly synchronization
may be necessary. IPIs are generally recommended in such scenarios instead
of a remote write to the per cpu area of another processor.
Even in cases where the remote writes are rare, please bear in
mind that a remote write will evict the cache line from the processor
that most likely will access it. If the processor wakes up and finds a
missing local cache line of a per cpu area, its performance and hence
the wake up times will be affected.
Christoph Lameter, August 4th, 2014
Pranith Kumar, Aug 2nd, 2014

2
Documentation/x86/tlb.txt
View File

@ -35,7 +35,7 @@ invlpg instruction (or instructions _near_ it) show up high in
profiles. If you believe that individual invalidations being
called too often, you can lower the tunable:
/sys/debug/kernel/x86/tlb_single_page_flush_ceiling
/sys/kernel/debug/x86/tlb_single_page_flush_ceiling
This will cause us to do the global flush for more cases.
Lowering it to 0 will disable the use of the individual flushes.

31
MAINTAINERS
View File

@ -1277,9 +1277,15 @@ F: drivers/scsi/arm/
ARM/Rockchip SoC support
M: Heiko Stuebner <heiko@sntech.de>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
L: linux-rockchip@lists.infradead.org
S: Maintained
F: arch/arm/boot/dts/rk3*
F: arch/arm/mach-rockchip/
F: drivers/clk/rockchip/
F: drivers/i2c/busses/i2c-rk3x.c
F: drivers/*/*rockchip*
F: drivers/*/*/*rockchip*
F: sound/soc/rockchip/
ARM/SAMSUNG ARM ARCHITECTURES
M: Ben Dooks <ben-linux@fluff.org>
@ -2065,7 +2071,7 @@ S: Supported
F: drivers/scsi/bnx2i/
BROADCOM KONA GPIO DRIVER
M: Markus Mayer <markus.mayer@linaro.org>
M: Ray Jui <rjui@broadcom.com>
L: bcm-kernel-feedback-list@broadcom.com
S: Supported
F: drivers/gpio/gpio-bcm-kona.c
@ -3121,6 +3127,17 @@ F: include/linux/host1x.h
F: include/uapi/drm/tegra_drm.h
F: Documentation/devicetree/bindings/gpu/nvidia,tegra20-host1x.txt
DRM DRIVERS FOR RENESAS
M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
L: dri-devel@lists.freedesktop.org
L: linux-sh@vger.kernel.org
T: git git://people.freedesktop.org/~airlied/linux
S: Supported
F: drivers/gpu/drm/rcar-du/
F: drivers/gpu/drm/shmobile/
F: include/linux/platform_data/rcar-du.h
F: include/linux/platform_data/shmob_drm.h
DSBR100 USB FM RADIO DRIVER
M: Alexey Klimov <klimov.linux@gmail.com>
L: linux-media@vger.kernel.org
@ -9545,6 +9562,14 @@ S: Maintained
F: Documentation/usb/ohci.txt
F: drivers/usb/host/ohci*
USB OVER IP DRIVER
M: Valentina Manea <valentina.manea.m@gmail.com>
M: Shuah Khan <shuah.kh@samsung.com>
L: linux-usb@vger.kernel.org
S: Maintained
F: drivers/usb/usbip/
F: tools/usb/usbip/
USB PEGASUS DRIVER
M: Petko Manolov <petkan@nucleusys.com>
L: linux-usb@vger.kernel.org
@ -10045,9 +10070,9 @@ F: Documentation/x86/
F: arch/x86/
X86 PLATFORM DRIVERS
M: Matthew Garrett <matthew.garrett@nebula.com>
M: Darren Hart <dvhart@infradead.org>
L: platform-driver-x86@vger.kernel.org
T: git git://cavan.codon.org.uk/platform-drivers-x86.git
T: git git://git.infradead.org/users/dvhart/linux-platform-drivers-x86.git
S: Maintained
F: drivers/platform/x86/

2
Makefile
View File

@ -1,7 +1,7 @@
VERSION = 3
PATCHLEVEL = 17
SUBLEVEL = 0
EXTRAVERSION = -rc1
EXTRAVERSION = -rc4
NAME = Shuffling Zombie Juror
# *DOCUMENTATION*

12
arch/alpha/include/asm/io.h
View File

@ -500,10 +500,14 @@ extern inline void writeq(u64 b, volatile void __iomem *addr)
#define outb_p outb
#define outw_p outw
#define outl_p outl
#define readb_relaxed(addr) __raw_readb(addr)
#define readw_relaxed(addr) __raw_readw(addr)
#define readl_relaxed(addr) __raw_readl(addr)
#define readq_relaxed(addr) __raw_readq(addr)
#define readb_relaxed(addr) __raw_readb(addr)
#define readw_relaxed(addr) __raw_readw(addr)
#define readl_relaxed(addr) __raw_readl(addr)
#define readq_relaxed(addr) __raw_readq(addr)
#define writeb_relaxed(b, addr) __raw_writeb(b, addr)
#define writew_relaxed(b, addr) __raw_writew(b, addr)
#define writel_relaxed(b, addr) __raw_writel(b, addr)
#define writeq_relaxed(b, addr) __raw_writeq(b, addr)
#define mmiowb()

2
arch/alpha/include/asm/unistd.h
View File

@ -3,7 +3,7 @@
#include <uapi/asm/unistd.h>
#define NR_SYSCALLS 508
#define NR_SYSCALLS 511
#define __ARCH_WANT_OLD_READDIR
#define __ARCH_WANT_STAT64

3
arch/alpha/include/uapi/asm/unistd.h
View File

@ -469,5 +469,8 @@
#define __NR_process_vm_writev 505
#define __NR_kcmp 506
#define __NR_finit_module 507
#define __NR_sched_setattr 508
#define __NR_sched_getattr 509
#define __NR_renameat2 510
#endif /* _UAPI_ALPHA_UNISTD_H */

3
arch/alpha/kernel/systbls.S
View File

@ -526,6 +526,9 @@ sys_call_table:
.quad sys_process_vm_writev /* 505 */
.quad sys_kcmp
.quad sys_finit_module
.quad sys_sched_setattr
.quad sys_sched_getattr
.quad sys_renameat2 /* 510 */
.size sys_call_table, . - sys_call_table
.type sys_call_table, @object

3
arch/arc/mm/cache_arc700.c
View File

@ -427,7 +427,7 @@ struct ic_inv_args {
static void __ic_line_inv_vaddr_helper(void *info)
{
struct ic_inv *ic_inv_args = (struct ic_inv_args *) info;
struct ic_inv_args *ic_inv = info;
__ic_line_inv_vaddr_local(ic_inv->paddr, ic_inv->vaddr, ic_inv->sz);
}
@ -581,6 +581,7 @@ void flush_icache_range(unsigned long kstart, unsigned long kend)
tot_sz -= sz;
}
}
EXPORT_SYMBOL(flush_icache_range);
/*
* General purpose helper to make I and D cache lines consistent.

2
arch/arm/Kconfig
View File

@ -1983,8 +1983,6 @@ config XIP_PHYS_ADDR
config KEXEC
bool "Kexec system call (EXPERIMENTAL)"
depends on (!SMP || PM_SLEEP_SMP)
select CRYPTO
select CRYPTO_SHA256
help
kexec is a system call that implements the ability to shutdown your
current kernel, and to start another kernel. It is like a reboot

4
arch/arm/boot/dts/am4372.dtsi
View File

@ -804,7 +804,7 @@
usb1: usb@48390000 {
compatible = "synopsys,dwc3";
reg = <0x48390000 0x17000>;
reg = <0x48390000 0x10000>;
interrupts = <GIC_SPI 168 IRQ_TYPE_LEVEL_HIGH>;
phys = <&usb2_phy1>;
phy-names = "usb2-phy";
@ -826,7 +826,7 @@
usb2: usb@483d0000 {
compatible = "synopsys,dwc3";
reg = <0x483d0000 0x17000>;
reg = <0x483d0000 0x10000>;
interrupts = <GIC_SPI 174 IRQ_TYPE_LEVEL_HIGH>;
phys = <&usb2_phy2>;
phy-names = "usb2-phy";

6
arch/arm/boot/dts/am437x-gp-evm.dts
View File

@ -260,7 +260,7 @@
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&i2c0_pins>;
clock-frequency = <400000>;
clock-frequency = <100000>;
tps65218: tps65218@24 {
reg = <0x24>;
@ -424,7 +424,7 @@
ranges = <0 0 0 0x01000000>; /* minimum GPMC partition = 16MB */
nand@0,0 {
reg = <0 0 4>; /* device IO registers */
ti,nand-ecc-opt = "bch8";
ti,nand-ecc-opt = "bch16";
ti,elm-id = <&elm>;
nand-bus-width = <8>;
gpmc,device-width = <1>;
@ -443,8 +443,6 @@
gpmc,rd-cycle-ns = <40>;
gpmc,wr-cycle-ns = <40>;
gpmc,wait-pin = <0>;
gpmc,wait-on-read;
gpmc,wait-on-write;
gpmc,bus-turnaround-ns = <0>;
gpmc,cycle2cycle-delay-ns = <0>;
gpmc,clk-activation-ns = <0>;

9
arch/arm/boot/dts/am43x-epos-evm.dts
View File

@ -435,13 +435,13 @@
};
&gpmc {
status = "okay";
status = "okay"; /* Disable QSPI when enabling GPMC (NAND) */
pinctrl-names = "default";
pinctrl-0 = <&nand_flash_x8>;
ranges = <0 0 0x08000000 0x10000000>; /* CS0: NAND */
nand@0,0 {
reg = <0 0 0>; /* CS0, offset 0 */
ti,nand-ecc-opt = "bch8";
ti,nand-ecc-opt = "bch16";
ti,elm-id = <&elm>;
nand-bus-width = <8>;
gpmc,device-width = <1>;
@ -459,8 +459,7 @@
gpmc,access-ns = <30>; /* tCEA + 4*/
gpmc,rd-cycle-ns = <40>;
gpmc,wr-cycle-ns = <40>;
gpmc,wait-on-read = "true";
gpmc,wait-on-write = "true";
gpmc,wait-pin = <0>;
gpmc,bus-turnaround-ns = <0>;
gpmc,cycle2cycle-delay-ns = <0>;
gpmc,clk-activation-ns = <0>;
@ -557,7 +556,7 @@
};
&qspi {
status = "okay";
status = "disabled"; /* Disable GPMC (NAND) when enabling QSPI */
pinctrl-names = "default";
pinctrl-0 = <&qspi1_default>;

2
arch/arm/boot/dts/at91rm9200.dtsi
View File

@ -149,7 +149,7 @@
usb: usbck {
compatible = "atmel,at91rm9200-clk-usb";
#clock-cells = <0>;
atmel,clk-divisors = <1 2>;
atmel,clk-divisors = <1 2 0 0>;
clocks = <&pllb>;
};

1
arch/arm/boot/dts/at91sam9g20.dtsi
View File

@ -40,6 +40,7 @@
};
pllb: pllbck {
compatible = "atmel,at91sam9g20-clk-pllb";
atmel,clk-input-range = <2000000 32000000>;
atmel,pll-clk-output-ranges = <30000000 100000000 0 0>;
};

47
arch/arm/boot/dts/dra7-evm.dts
View File

@ -8,6 +8,7 @@
/dts-v1/;
#include "dra74x.dtsi"
#include <dt-bindings/gpio/gpio.h>
/ {
model = "TI DRA742";
@ -24,9 +25,29 @@
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
vtt_fixed: fixedregulator-vtt {
compatible = "regulator-fixed";
regulator-name = "vtt_fixed";
regulator-min-microvolt = <1350000>;
regulator-max-microvolt = <1350000>;
regulator-always-on;
regulator-boot-on;
enable-active-high;
gpio = <&gpio7 11 GPIO_ACTIVE_HIGH>;
};
};
&dra7_pmx_core {
pinctrl-names = "default";
pinctrl-0 = <&vtt_pin>;
vtt_pin: pinmux_vtt_pin {
pinctrl-single,pins = <
0x3b4 (PIN_OUTPUT | MUX_MODE14) /* spi1_cs1.gpio7_11 */
>;
};
i2c1_pins: pinmux_i2c1_pins {
pinctrl-single,pins = <
0x400 (PIN_INPUT | MUX_MODE0) /* i2c1_sda */
@ -43,20 +64,19 @@
i2c3_pins: pinmux_i2c3_pins {
pinctrl-single,pins = <
0x410 (PIN_INPUT | MUX_MODE0) /* i2c3_sda */
0x414 (PIN_INPUT | MUX_MODE0) /* i2c3_scl */
0x288 (PIN_INPUT | MUX_MODE9) /* gpio6_14.i2c3_sda */
0x28c (PIN_INPUT | MUX_MODE9) /* gpio6_15.i2c3_scl */
>;
};
mcspi1_pins: pinmux_mcspi1_pins {
pinctrl-single,pins = <
0x3a4 (PIN_INPUT | MUX_MODE0) /* spi2_clk */
0x3a8 (PIN_INPUT | MUX_MODE0) /* spi2_d1 */
0x3ac (PIN_INPUT | MUX_MODE0) /* spi2_d0 */
0x3b0 (PIN_INPUT_SLEW | MUX_MODE0) /* spi2_cs0 */
0x3b4 (PIN_INPUT_SLEW | MUX_MODE0) /* spi2_cs1 */
0x3b8 (PIN_INPUT_SLEW | MUX_MODE6) /* spi2_cs2 */
0x3bc (PIN_INPUT_SLEW | MUX_MODE6) /* spi2_cs3 */
0x3a4 (PIN_INPUT | MUX_MODE0) /* spi1_sclk */
0x3a8 (PIN_INPUT | MUX_MODE0) /* spi1_d1 */
0x3ac (PIN_INPUT | MUX_MODE0) /* spi1_d0 */
0x3b0 (PIN_INPUT_SLEW | MUX_MODE0) /* spi1_cs0 */
0x3b8 (PIN_INPUT_SLEW | MUX_MODE6) /* spi1_cs2.hdmi1_hpd */
0x3bc (PIN_INPUT_SLEW | MUX_MODE6) /* spi1_cs3.hdmi1_cec */
>;
};
@ -284,7 +304,7 @@
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&i2c3_pins>;
clock-frequency = <3400000>;
clock-frequency = <400000>;
};
&mcspi1 {
@ -483,7 +503,7 @@
reg = <0x001c0000 0x00020000>;
};
partition@7 {
label = "NAND.u-boot-env";
label = "NAND.u-boot-env.backup1";
reg = <0x001e0000 0x00020000>;
};
partition@8 {
@ -504,3 +524,8 @@
&usb2_phy2 {
phy-supply = <&ldousb_reg>;
};
&gpio7 {
ti,no-reset-on-init;
ti,no-idle-on-init;
};

16
arch/arm/boot/dts/dra7.dtsi
View File

@ -245,7 +245,7 @@
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <1>;
#interrupt-cells = <2>;
};
gpio2: gpio@48055000 {
@ -256,7 +256,7 @@
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <1>;
#interrupt-cells = <2>;
};
gpio3: gpio@48057000 {
@ -267,7 +267,7 @@
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <1>;
#interrupt-cells = <2>;
};
gpio4: gpio@48059000 {
@ -278,7 +278,7 @@
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <1>;
#interrupt-cells = <2>;
};
gpio5: gpio@4805b000 {
@ -289,7 +289,7 @@
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <1>;
#interrupt-cells = <2>;
};
gpio6: gpio@4805d000 {
@ -300,7 +300,7 @@
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <1>;
#interrupt-cells = <2>;
};
gpio7: gpio@48051000 {
@ -311,7 +311,7 @@
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <1>;
#interrupt-cells = <2>;
};
gpio8: gpio@48053000 {
@ -322,7 +322,7 @@
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <1>;
#interrupt-cells = <2>;
};
uart1: serial@4806a000 {

13
arch/arm/boot/dts/exynos4412-odroid-common.dtsi
View File

@ -134,6 +134,8 @@
i2c@13860000 {
pinctrl-0 = <&i2c0_bus>;
pinctrl-names = "default";
samsung,i2c-sda-delay = <100>;
samsung,i2c-max-bus-freq = <400000>;
status = "okay";
usb3503: usb3503@08 {
@ -148,6 +150,10 @@
max77686: pmic@09 {
compatible = "maxim,max77686";
interrupt-parent = <&gpx3>;
interrupts = <2 0>;
pinctrl-names = "default";
pinctrl-0 = <&max77686_irq>;
reg = <0x09>;
#clock-cells = <1>;
@ -368,4 +374,11 @@
samsung,pins = "gpx1-3";
samsung,pin-pud = <0>;
};
max77686_irq: max77686-irq {
samsung,pins = "gpx3-2";
samsung,pin-function = <0>;
samsung,pin-pud = <0>;
samsung,pin-drv = <0>;
};
};

8
arch/arm/boot/dts/imx53-qsrb.dts
View File

@ -28,6 +28,12 @@
MX53_PAD_CSI0_DAT9__I2C1_SCL 0x400001ec
>;
};
pinctrl_pmic: pmicgrp {
fsl,pins = <
MX53_PAD_CSI0_DAT5__GPIO5_23 0x1e4 /* IRQ */
>;
};
};
};
@ -38,6 +44,8 @@
pmic: mc34708@8 {
compatible = "fsl,mc34708";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pmic>;
reg = <0x08>;
interrupt-parent = <&gpio5>;
interrupts = <23 0x8>;

2
arch/arm/boot/dts/imx53.dtsi
View File

@ -731,7 +731,7 @@
compatible = "fsl,imx53-vpu";
reg = <0x63ff4000 0x1000>;
interrupts = <9>;
clocks = <&clks IMX5_CLK_VPU_GATE>,
clocks = <&clks IMX5_CLK_VPU_REFERENCE_GATE>,
<&clks IMX5_CLK_VPU_GATE>;
clock-names = "per", "ahb";
resets = <&src 1>;

4
arch/arm/boot/dts/imx6dl-hummingboard.dts
View File

@ -58,7 +58,7 @@
sound-spdif {
compatible = "fsl,imx-audio-spdif";
model = "imx-spdif";
model = "On-board SPDIF";
/* IMX6 doesn't implement this yet */
spdif-controller = <&spdif>;
spdif-out;
@ -181,11 +181,13 @@
};
&usbh1 {
disable-over-current;
vbus-supply = <&reg_usbh1_vbus>;
status = "okay";
};
&usbotg {
disable-over-current;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_hummingboard_usbotg_id>;
vbus-supply = <&reg_usbotg_vbus>;

3
arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts
View File

@ -119,7 +119,7 @@
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_enet>;
phy-mode = "rgmii";
phy-reset-gpios = <&gpio3 23 0>;
phy-reset-gpios = <&gpio1 25 0>;
phy-supply = <&vgen2_1v2_eth>;
status = "okay";
};
@ -339,6 +339,7 @@
MX6QDL_PAD_ENET_REF_CLK__ENET_TX_CLK 0x1b0b0
MX6QDL_PAD_ENET_MDIO__ENET_MDIO 0x1b0b0
MX6QDL_PAD_ENET_MDC__ENET_MDC 0x1b0b0
MX6QDL_PAD_ENET_CRS_DV__GPIO1_IO25 0x1b0b0
MX6QDL_PAD_GPIO_16__ENET_REF_CLK 0x4001b0a8
>;
};

19
arch/arm/boot/dts/imx6qdl-cubox-i.dtsi
View File

@ -61,7 +61,7 @@
sound-spdif {
compatible = "fsl,imx-audio-spdif";
model = "imx-spdif";
model = "Integrated SPDIF";
/* IMX6 doesn't implement this yet */
spdif-controller = <&spdif>;
spdif-out;
@ -130,16 +130,23 @@
fsl,pins = <MX6QDL_PAD_GPIO_17__SPDIF_OUT 0x13091>;
};
pinctrl_cubox_i_usbh1: cubox-i-usbh1 {
fsl,pins = <MX6QDL_PAD_GPIO_3__USB_H1_OC 0x1b0b0>;
};
pinctrl_cubox_i_usbh1_vbus: cubox-i-usbh1-vbus {
fsl,pins = <MX6QDL_PAD_GPIO_0__GPIO1_IO00 0x4001b0b0>;
};
pinctrl_cubox_i_usbotg_id: cubox-i-usbotg-id {
pinctrl_cubox_i_usbotg: cubox-i-usbotg {
/*
* The Cubox-i pulls this low, but as it's pointless
* The Cubox-i pulls ID low, but as it's pointless
* leaving it as a pull-up, even if it is just 10uA.
*/
fsl,pins = <MX6QDL_PAD_GPIO_1__USB_OTG_ID 0x13059>;
fsl,pins = <
MX6QDL_PAD_GPIO_1__USB_OTG_ID 0x13059
MX6QDL_PAD_KEY_COL4__USB_OTG_OC 0x1b0b0
>;
};
pinctrl_cubox_i_usbotg_vbus: cubox-i-usbotg-vbus {
@ -173,13 +180,15 @@
};
&usbh1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_cubox_i_usbh1>;
vbus-supply = <&reg_usbh1_vbus>;
status = "okay";
};
&usbotg {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_cubox_i_usbotg_id>;
pinctrl-0 = <&pinctrl_cubox_i_usbotg>;
vbus-supply = <&reg_usbotg_vbus>;
status = "okay";
};

2
arch/arm/boot/dts/imx6qdl-microsom-ar8035.dtsi
View File

@ -17,7 +17,7 @@
enet {
pinctrl_microsom_enet_ar8035: microsom-enet-ar8035 {
fsl,pins = <
MX6QDL_PAD_ENET_MDIO__ENET_MDIO 0x1b0b0
MX6QDL_PAD_ENET_MDIO__ENET_MDIO 0x1b8b0
MX6QDL_PAD_ENET_MDC__ENET_MDC 0x1b0b0
/* AR8035 reset */
MX6QDL_PAD_KEY_ROW4__GPIO4_IO15 0x130b0

26
arch/arm/boot/dts/imx6sx-pinfunc.h
View File

@ -78,7 +78,7 @@
#define MX6SX_PAD_GPIO1_IO07__USDHC2_WP 0x0030 0x0378 0x0870 0x1 0x1
#define MX6SX_PAD_GPIO1_IO07__ENET2_MDIO 0x0030 0x0378 0x0770 0x2 0x0
#define MX6SX_PAD_GPIO1_IO07__AUDMUX_MCLK 0x0030 0x0378 0x0000 0x3 0x0
#define MX6SX_PAD_GPIO1_IO07__UART1_CTS_B 0x0030 0x0378 0x082C 0x4 0x1
#define MX6SX_PAD_GPIO1_IO07__UART1_CTS_B 0x0030 0x0378 0x0000 0x4 0x0
#define MX6SX_PAD_GPIO1_IO07__GPIO1_IO_7 0x0030 0x0378 0x0000 0x5 0x0
#define MX6SX_PAD_GPIO1_IO07__SRC_EARLY_RESET 0x0030 0x0378 0x0000 0x6 0x0
#define MX6SX_PAD_GPIO1_IO07__DCIC2_OUT 0x0030 0x0378 0x0000 0x7 0x0
@ -96,7 +96,7 @@
#define MX6SX_PAD_GPIO1_IO09__WDOG2_WDOG_B 0x0038 0x0380 0x0000 0x1 0x0
#define MX6SX_PAD_GPIO1_IO09__SDMA_EXT_EVENT_1 0x0038 0x0380 0x0820 0x2 0x0
#define MX6SX_PAD_GPIO1_IO09__CCM_OUT0 0x0038 0x0380 0x0000 0x3 0x0
#define MX6SX_PAD_GPIO1_IO09__UART2_CTS_B 0x0038 0x0380 0x0834 0x4 0x1
#define MX6SX_PAD_GPIO1_IO09__UART2_CTS_B 0x0038 0x0380 0x0000 0x4 0x0
#define MX6SX_PAD_GPIO1_IO09__GPIO1_IO_9 0x0038 0x0380 0x0000 0x5 0x0
#define MX6SX_PAD_GPIO1_IO09__SRC_INT_BOOT 0x0038 0x0380 0x0000 0x6 0x0
#define MX6SX_PAD_GPIO1_IO09__OBSERVE_MUX_OUT_4 0x0038 0x0380 0x0000 0x7 0x0
@ -213,7 +213,7 @@
#define MX6SX_PAD_CSI_DATA07__ESAI_TX3_RX2 0x0068 0x03B0 0x079C 0x1 0x1
#define MX6SX_PAD_CSI_DATA07__I2C4_SDA 0x0068 0x03B0 0x07C4 0x2 0x2
#define MX6SX_PAD_CSI_DATA07__KPP_ROW_7 0x0068 0x03B0 0x07DC 0x3 0x0
#define MX6SX_PAD_CSI_DATA07__UART6_CTS_B 0x0068 0x03B0 0x0854 0x4 0x1
#define MX6SX_PAD_CSI_DATA07__UART6_CTS_B 0x0068 0x03B0 0x0000 0x4 0x0
#define MX6SX_PAD_CSI_DATA07__GPIO1_IO_21 0x0068 0x03B0 0x0000 0x5 0x0
#define MX6SX_PAD_CSI_DATA07__WEIM_DATA_16 0x0068 0x03B0 0x0000 0x6 0x0
#define MX6SX_PAD_CSI_DATA07__DCIC1_OUT 0x0068 0x03B0 0x0000 0x7 0x0
@ -254,7 +254,7 @@
#define MX6SX_PAD_CSI_VSYNC__CSI1_VSYNC 0x0078 0x03C0 0x0708 0x0 0x0
#define MX6SX_PAD_CSI_VSYNC__ESAI_TX5_RX0 0x0078 0x03C0 0x07A4 0x1 0x1
#define MX6SX_PAD_CSI_VSYNC__AUDMUX_AUD6_RXD 0x0078 0x03C0 0x0674 0x2 0x1
#define MX6SX_PAD_CSI_VSYNC__UART4_CTS_B 0x0078 0x03C0 0x0844 0x3 0x3
#define MX6SX_PAD_CSI_VSYNC__UART4_CTS_B 0x0078 0x03C0 0x0000 0x3 0x0
#define MX6SX_PAD_CSI_VSYNC__MQS_RIGHT 0x0078 0x03C0 0x0000 0x4 0x0
#define MX6SX_PAD_CSI_VSYNC__GPIO1_IO_25 0x0078 0x03C0 0x0000 0x5 0x0
#define MX6SX_PAD_CSI_VSYNC__WEIM_DATA_24 0x0078 0x03C0 0x0000 0x6 0x0
@ -352,7 +352,7 @@
#define MX6SX_PAD_ENET2_TX_CLK__ENET2_TX_CLK 0x00A0 0x03E8 0x0000 0x0 0x0
#define MX6SX_PAD_ENET2_TX_CLK__ENET2_REF_CLK2 0x00A0 0x03E8 0x076C 0x1 0x1
#define MX6SX_PAD_ENET2_TX_CLK__I2C3_SDA 0x00A0 0x03E8 0x07BC 0x2 0x1
#define MX6SX_PAD_ENET2_TX_CLK__UART1_CTS_B 0x00A0 0x03E8 0x082C 0x3 0x3
#define MX6SX_PAD_ENET2_TX_CLK__UART1_CTS_B 0x00A0 0x03E8 0x0000 0x3 0x0
#define MX6SX_PAD_ENET2_TX_CLK__MLB_CLK 0x00A0 0x03E8 0x07E8 0x4 0x1
#define MX6SX_PAD_ENET2_TX_CLK__GPIO2_IO_9 0x00A0 0x03E8 0x0000 0x5 0x0
#define MX6SX_PAD_ENET2_TX_CLK__USB_OTG2_PWR 0x00A0 0x03E8 0x0000 0x6 0x0
@ -404,7 +404,7 @@
#define MX6SX_PAD_KEY_COL4__SAI2_RX_BCLK 0x00B4 0x03FC 0x0808 0x7 0x0
#define MX6SX_PAD_KEY_ROW0__KPP_ROW_0 0x00B8 0x0400 0x0000 0x0 0x0
#define MX6SX_PAD_KEY_ROW0__USDHC3_WP 0x00B8 0x0400 0x0000 0x1 0x0
#define MX6SX_PAD_KEY_ROW0__UART6_CTS_B 0x00B8 0x0400 0x0854 0x2 0x3
#define MX6SX_PAD_KEY_ROW0__UART6_CTS_B 0x00B8 0x0400 0x0000 0x2 0x0
#define MX6SX_PAD_KEY_ROW0__ECSPI1_MOSI 0x00B8 0x0400 0x0718 0x3 0x0
#define MX6SX_PAD_KEY_ROW0__AUDMUX_AUD5_TXD 0x00B8 0x0400 0x0660 0x4 0x0
#define MX6SX_PAD_KEY_ROW0__GPIO2_IO_15 0x00B8 0x0400 0x0000 0x5 0x0
@ -423,7 +423,7 @@
#define MX6SX_PAD_KEY_ROW1__M4_NMI 0x00BC 0x0404 0x0000 0x8 0x0
#define MX6SX_PAD_KEY_ROW2__KPP_ROW_2 0x00C0 0x0408 0x0000 0x0 0x0
#define MX6SX_PAD_KEY_ROW2__USDHC4_WP 0x00C0 0x0408 0x0878 0x1 0x1
#define MX6SX_PAD_KEY_ROW2__UART5_CTS_B 0x00C0 0x0408 0x084C 0x2 0x3
#define MX6SX_PAD_KEY_ROW2__UART5_CTS_B 0x00C0 0x0408 0x0000 0x2 0x0
#define MX6SX_PAD_KEY_ROW2__CAN1_RX 0x00C0 0x0408 0x068C 0x3 0x1
#define MX6SX_PAD_KEY_ROW2__CANFD_RX1 0x00C0 0x0408 0x0694 0x4 0x1
#define MX6SX_PAD_KEY_ROW2__GPIO2_IO_17 0x00C0 0x0408 0x0000 0x5 0x0
@ -815,7 +815,7 @@
#define MX6SX_PAD_NAND_DATA05__RAWNAND_DATA05 0x0164 0x04AC 0x0000 0x0 0x0
#define MX6SX_PAD_NAND_DATA05__USDHC2_DATA5 0x0164 0x04AC 0x0000 0x1 0x0
#define MX6SX_PAD_NAND_DATA05__QSPI2_B_DQS 0x0164 0x04AC 0x0000 0x2 0x0
#define MX6SX_PAD_NAND_DATA05__UART3_CTS_B 0x0164 0x04AC 0x083C 0x3 0x1
#define MX6SX_PAD_NAND_DATA05__UART3_CTS_B 0x0164 0x04AC 0x0000 0x3 0x0
#define MX6SX_PAD_NAND_DATA05__AUDMUX_AUD4_RXC 0x0164 0x04AC 0x064C 0x4 0x0
#define MX6SX_PAD_NAND_DATA05__GPIO4_IO_9 0x0164 0x04AC 0x0000 0x5 0x0
#define MX6SX_PAD_NAND_DATA05__WEIM_AD_5 0x0164 0x04AC 0x0000 0x6 0x0
@ -957,7 +957,7 @@
#define MX6SX_PAD_QSPI1A_SS1_B__SIM_M_HADDR_12 0x019C 0x04E4 0x0000 0x7 0x0
#define MX6SX_PAD_QSPI1A_SS1_B__SDMA_DEBUG_PC_3 0x019C 0x04E4 0x0000 0x9 0x0
#define MX6SX_PAD_QSPI1B_DATA0__QSPI1_B_DATA_0 0x01A0 0x04E8 0x0000 0x0 0x0
#define MX6SX_PAD_QSPI1B_DATA0__UART3_CTS_B 0x01A0 0x04E8 0x083C 0x1 0x4
#define MX6SX_PAD_QSPI1B_DATA0__UART3_CTS_B 0x01A0 0x04E8 0x0000 0x1 0x0
#define MX6SX_PAD_QSPI1B_DATA0__ECSPI3_MOSI 0x01A0 0x04E8 0x0738 0x2 0x1
#define MX6SX_PAD_QSPI1B_DATA0__ESAI_RX_FS 0x01A0 0x04E8 0x0778 0x3 0x2
#define MX6SX_PAD_QSPI1B_DATA0__CSI1_DATA_22 0x01A0 0x04E8 0x06F4 0x4 0x1
@ -1236,7 +1236,7 @@
#define MX6SX_PAD_SD1_DATA2__AUDMUX_AUD5_TXFS 0x0230 0x0578 0x0670 0x1 0x1
#define MX6SX_PAD_SD1_DATA2__PWM3_OUT 0x0230 0x0578 0x0000 0x2 0x0
#define MX6SX_PAD_SD1_DATA2__GPT_COMPARE2 0x0230 0x0578 0x0000 0x3 0x0
#define MX6SX_PAD_SD1_DATA2__UART2_CTS_B 0x0230 0x0578 0x0834 0x4 0x2
#define MX6SX_PAD_SD1_DATA2__UART2_CTS_B 0x0230 0x0578 0x0000 0x4 0x0
#define MX6SX_PAD_SD1_DATA2__GPIO6_IO_4 0x0230 0x0578 0x0000 0x5 0x0
#define MX6SX_PAD_SD1_DATA2__ECSPI4_RDY 0x0230 0x0578 0x0000 0x6 0x0
#define MX6SX_PAD_SD1_DATA2__CCM_OUT0 0x0230 0x0578 0x0000 0x7 0x0
@ -1315,7 +1315,7 @@
#define MX6SX_PAD_SD2_DATA3__VADC_CLAMP_CURRENT_3 0x024C 0x0594 0x0000 0x8 0x0
#define MX6SX_PAD_SD2_DATA3__MMDC_DEBUG_31 0x024C 0x0594 0x0000 0x9 0x0
#define MX6SX_PAD_SD3_CLK__USDHC3_CLK 0x0250 0x0598 0x0000 0x0 0x0
#define MX6SX_PAD_SD3_CLK__UART4_CTS_B 0x0250 0x0598 0x0844 0x1 0x0
#define MX6SX_PAD_SD3_CLK__UART4_CTS_B 0x0250 0x0598 0x0000 0x1 0x0
#define MX6SX_PAD_SD3_CLK__ECSPI4_SCLK 0x0250 0x0598 0x0740 0x2 0x0
#define MX6SX_PAD_SD3_CLK__AUDMUX_AUD6_RXFS 0x0250 0x0598 0x0680 0x3 0x0
#define MX6SX_PAD_SD3_CLK__LCDIF2_VSYNC 0x0250 0x0598 0x0000 0x4 0x0
@ -1409,7 +1409,7 @@
#define MX6SX_PAD_SD3_DATA7__USDHC3_DATA7 0x0274 0x05BC 0x0000 0x0 0x0
#define MX6SX_PAD_SD3_DATA7__CAN1_RX 0x0274 0x05BC 0x068C 0x1 0x0
#define MX6SX_PAD_SD3_DATA7__CANFD_RX1 0x0274 0x05BC 0x0694 0x2 0x0
#define MX6SX_PAD_SD3_DATA7__UART3_CTS_B 0x0274 0x05BC 0x083C 0x3 0x3
#define MX6SX_PAD_SD3_DATA7__UART3_CTS_B 0x0274 0x05BC 0x0000 0x3 0x0
#define MX6SX_PAD_SD3_DATA7__LCDIF2_DATA_5 0x0274 0x05BC 0x0000 0x4 0x0
#define MX6SX_PAD_SD3_DATA7__GPIO7_IO_9 0x0274 0x05BC 0x0000 0x5 0x0
#define MX6SX_PAD_SD3_DATA7__ENET1_1588_EVENT0_IN 0x0274 0x05BC 0x0000 0x6 0x0
@ -1510,7 +1510,7 @@
#define MX6SX_PAD_SD4_DATA6__SDMA_DEBUG_EVENT_CHANNEL_1 0x0298 0x05E0 0x0000 0x9 0x0
#define MX6SX_PAD_SD4_DATA7__USDHC4_DATA7 0x029C 0x05E4 0x0000 0x0 0x0
#define MX6SX_PAD_SD4_DATA7__RAWNAND_DATA08 0x029C 0x05E4 0x0000 0x1 0x0
#define MX6SX_PAD_SD4_DATA7__UART5_CTS_B 0x029C 0x05E4 0x084C 0x2 0x1
#define MX6SX_PAD_SD4_DATA7__UART5_CTS_B 0x029C 0x05E4 0x0000 0x2 0x0
#define MX6SX_PAD_SD4_DATA7__ECSPI3_SS0 0x029C 0x05E4 0x073C 0x3 0x0
#define MX6SX_PAD_SD4_DATA7__LCDIF2_DATA_15 0x029C 0x05E4 0x0000 0x4 0x0
#define MX6SX_PAD_SD4_DATA7__GPIO6_IO_21 0x029C 0x05E4 0x0000 0x5 0x0

1
arch/arm/boot/dts/omap3-beagle.dts
View File

@ -292,6 +292,7 @@
&uart3 {
pinctrl-names = "default";
pinctrl-0 = <&uart3_pins>;
interrupts-extended = <&intc 74 &omap3_pmx_core OMAP3_UART3_RX>;
};
&gpio1 {

2
arch/arm/boot/dts/omap3-n900.dts
View File

@ -353,7 +353,7 @@
};
twl_power: power {
compatible = "ti,twl4030-power-n900";
compatible = "ti,twl4030-power-n900", "ti,twl4030-power-idle-osc-off";
ti,use_poweroff;
};
};

2
arch/arm/boot/dts/omap3430-sdp.dts
View File

@ -107,7 +107,7 @@
#address-cells = <1>;
#size-cells = <1>;
reg = <1 0 0x08000000>;
ti,nand-ecc-opt = "ham1";
ti,nand-ecc-opt = "sw";
nand-bus-width = <8>;
gpmc,cs-on-ns = <0>;
gpmc,cs-rd-off-ns = <36>;

1
arch/arm/boot/dts/omap3xxx-clocks.dtsi
View File

@ -467,6 +467,7 @@
ti,bit-shift = <0x1e>;
reg = <0x0d00>;
ti,set-bit-to-disable;
ti,set-rate-parent;
};
dpll4_m6_ck: dpll4_m6_ck {

16
arch/arm/boot/dts/omap54xx-clocks.dtsi
View File

@ -367,10 +367,12 @@
l3_iclk_div: l3_iclk_div {
#clock-cells = <0>;
compatible = "fixed-factor-clock";
compatible = "ti,divider-clock";
ti,max-div = <2>;
ti,bit-shift = <4>;
reg = <0x100>;
clocks = <&dpll_core_h12x2_ck>;
clock-mult = <1>;
clock-div = <1>;
ti,index-power-of-two;
};
gpu_l3_iclk: gpu_l3_iclk {
@ -383,10 +385,12 @@
l4_root_clk_div: l4_root_clk_div {
#clock-cells = <0>;
compatible = "fixed-factor-clock";
compatible = "ti,divider-clock";
ti,max-div = <2>;
ti,bit-shift = <8>;
reg = <0x100>;
clocks = <&l3_iclk_div>;
clock-mult = <1>;
clock-div = <1>;
ti,index-power-of-two;
};
slimbus1_slimbus_clk: slimbus1_slimbus_clk {

7
arch/arm/boot/dts/r8a7791-koelsch.dts
View File

@ -275,11 +275,6 @@
renesas,function = "msiof0";
};
i2c6_pins: i2c6 {
renesas,groups = "i2c6";
renesas,function = "i2c6";
};
usb0_pins: usb0 {
renesas,groups = "usb0";
renesas,function = "usb0";
@ -420,8 +415,6 @@
};
&i2c6 {
pinctrl-names = "default";
pinctrl-0 = <&i2c6_pins>;
status = "okay";
clock-frequency = <100000>;

2
arch/arm/boot/dts/rk3066a-bqcurie2.dts
View File

@ -149,6 +149,8 @@
&mmc0 { /* sdmmc */
num-slots = <1>;
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&sd0_clk>, <&sd0_cmd>, <&sd0_cd>, <&sd0_bus4>;
vmmc-supply = <&vcc_sd0>;
slot@0 {

2
arch/arm/boot/dts/rk3188-radxarock.dts
View File

@ -179,6 +179,8 @@
&mmc0 {
num-slots = <1>;
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&sd0_clk>, <&sd0_cmd>, <&sd0_cd>, <&sd0_bus4>;
vmmc-supply = <&vcc_sd0>;
slot@0 {

1
arch/arm/boot/dts/ste-snowball.dts
View File

@ -116,7 +116,6 @@
msp2: msp@80117000 {
pinctrl-names = "default";
pinctrl-0 = <&msp2_default_mode>;
status = "okay";
};
msp3: msp@80125000 {

8
arch/arm/boot/dts/sun6i-a31.dtsi
View File

@ -660,6 +660,8 @@
clock-frequency = <100000>;
resets = <&apb2_rst 0>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
i2c1: i2c@01c2b000 {
@ -670,6 +672,8 @@
clock-frequency = <100000>;
resets = <&apb2_rst 1>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
i2c2: i2c@01c2b400 {
@ -680,6 +684,8 @@
clock-frequency = <100000>;
resets = <&apb2_rst 2>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
i2c3: i2c@01c2b800 {
@ -690,6 +696,8 @@
clock-frequency = <100000>;
resets = <&apb2_rst 3>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
gmac: ethernet@01c30000 {

11
arch/arm/boot/dts/tegra30-apalis.dtsi
View File

@ -423,7 +423,7 @@
vcc4-supply = <&sys_3v3_reg>;
vcc5-supply = <&sys_3v3_reg>;
vcc6-supply = <&vio_reg>;
vcc7-supply = <&sys_5v0_reg>;
vcc7-supply = <&charge_pump_5v0_reg>;
vccio-supply = <&sys_3v3_reg>;
regulators {
@ -674,5 +674,14 @@
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
charge_pump_5v0_reg: regulator@101 {
compatible = "regulator-fixed";
reg = <101>;
regulator-name = "5v0";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
regulator-always-on;
};
};
};

11
arch/arm/boot/dts/tegra30-colibri.dtsi
View File

@ -201,7 +201,7 @@
vcc4-supply = <&sys_3v3_reg>;
vcc5-supply = <&sys_3v3_reg>;
vcc6-supply = <&vio_reg>;
vcc7-supply = <&sys_5v0_reg>;
vcc7-supply = <&charge_pump_5v0_reg>;
vccio-supply = <&sys_3v3_reg>;
regulators {
@ -373,5 +373,14 @@
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
charge_pump_5v0_reg: regulator@101 {
compatible = "regulator-fixed";
reg = <101>;
regulator-name = "5v0";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
regulator-always-on;
};
};
};

4
arch/arm/boot/dts/twl6030.dtsi
View File

@ -83,10 +83,6 @@
regulator-always-on;
};
clk32kg: regulator-clk32kg {
compatible = "ti,twl6030-clk32kg";
};
twl_usb_comparator: usb-comparator {
compatible = "ti,twl6030-usb";
interrupts = <4>, <10>;

2
arch/arm/boot/dts/vf610-twr.dts
View File

@ -168,7 +168,7 @@
};
pinctrl_esdhc1: esdhc1grp {
fsl,fsl,pins = <
fsl,pins = <
VF610_PAD_PTA24__ESDHC1_CLK 0x31ef
VF610_PAD_PTA25__ESDHC1_CMD 0x31ef
VF610_PAD_PTA26__ESDHC1_DAT0 0x31ef

9
arch/arm/common/edma.c
View File

@ -1443,14 +1443,14 @@ void edma_assign_channel_eventq(unsigned channel, enum dma_event_q eventq_no)
EXPORT_SYMBOL(edma_assign_channel_eventq);
static int edma_setup_from_hw(struct device *dev, struct edma_soc_info *pdata,
struct edma *edma_cc)
struct edma *edma_cc, int cc_id)
{
int i;
u32 value, cccfg;
s8 (*queue_priority_map)[2];
/* Decode the eDMA3 configuration from CCCFG register */
cccfg = edma_read(0, EDMA_CCCFG);
cccfg = edma_read(cc_id, EDMA_CCCFG);
value = GET_NUM_REGN(cccfg);
edma_cc->num_region = BIT(value);
@ -1464,7 +1464,8 @@ static int edma_setup_from_hw(struct device *dev, struct edma_soc_info *pdata,
value = GET_NUM_EVQUE(cccfg);
edma_cc->num_tc = value + 1;
dev_dbg(dev, "eDMA3 HW configuration (cccfg: 0x%08x):\n", cccfg);
dev_dbg(dev, "eDMA3 CC%d HW configuration (cccfg: 0x%08x):\n", cc_id,
cccfg);
dev_dbg(dev, "num_region: %u\n", edma_cc->num_region);
dev_dbg(dev, "num_channel: %u\n", edma_cc->num_channels);
dev_dbg(dev, "num_slot: %u\n", edma_cc->num_slots);
@ -1684,7 +1685,7 @@ static int edma_probe(struct platform_device *pdev)
return -ENOMEM;
/* Get eDMA3 configuration from IP */
ret = edma_setup_from_hw(dev, info[j], edma_cc[j]);
ret = edma_setup_from_hw(dev, info[j], edma_cc[j], j);
if (ret)
return ret;

1
arch/arm/include/asm/cacheflush.h
View File

@ -472,7 +472,6 @@ static inline void __sync_cache_range_r(volatile void *p, size_t size)
"mcr p15, 0, r0, c1, c0, 0 @ set SCTLR \n\t" \
"isb \n\t" \
"bl v7_flush_dcache_"__stringify(level)" \n\t" \
"clrex \n\t" \
"mrc p15, 0, r0, c1, c0, 1 @ get ACTLR \n\t" \
"bic r0, r0, #(1 << 6) @ disable local coherency \n\t" \
"mcr p15, 0, r0, c1, c0, 1 @ set ACTLR \n\t" \

3
arch/arm/include/asm/cputype.h
View File

@ -74,6 +74,7 @@
#define ARM_CPU_PART_CORTEX_A12 0x4100c0d0
#define ARM_CPU_PART_CORTEX_A17 0x4100c0e0
#define ARM_CPU_PART_CORTEX_A15 0x4100c0f0
#define ARM_CPU_PART_MASK 0xff00fff0
#define ARM_CPU_XSCALE_ARCH_MASK 0xe000
#define ARM_CPU_XSCALE_ARCH_V1 0x2000
@ -179,7 +180,7 @@ static inline unsigned int __attribute_const__ read_cpuid_implementor(void)
*/
static inline unsigned int __attribute_const__ read_cpuid_part(void)
{
return read_cpuid_id() & 0xff00fff0;
return read_cpuid_id() & ARM_CPU_PART_MASK;
}
static inline unsigned int __attribute_const__ __deprecated read_cpuid_part_number(void)

1
arch/arm/include/asm/elf.h
View File

@ -50,6 +50,7 @@ typedef struct user_fp elf_fpregset_t;
#define R_ARM_ABS32 2
#define R_ARM_CALL 28
#define R_ARM_JUMP24 29
#define R_ARM_TARGET1 38
#define R_ARM_V4BX 40
#define R_ARM_PREL31 42
#define R_ARM_MOVW_ABS_NC 43

15
arch/arm/include/asm/smp_plat.h
View File

@ -8,6 +8,7 @@
#include <linux/cpumask.h>
#include <linux/err.h>
#include <asm/cpu.h>
#include <asm/cputype.h>
/*
@ -25,6 +26,20 @@ static inline bool is_smp(void)
#endif
}
/**
* smp_cpuid_part() - return part id for a given cpu
* @cpu: logical cpu id.
*
* Return: part id of logical cpu passed as argument.
*/
static inline unsigned int smp_cpuid_part(int cpu)
{
struct cpuinfo_arm *cpu_info = &per_cpu(cpu_data, cpu);
return is_smp() ? cpu_info->cpuid & ARM_CPU_PART_MASK :
read_cpuid_part();
}
/* all SMP configurations have the extended CPUID registers */
#ifndef CONFIG_MMU
#define tlb_ops_need_broadcast() 0

29
arch/arm/kernel/entry-header.S
View File

@ -208,26 +208,21 @@
#endif
.endif
msr spsr_cxsf, \rpsr
#if defined(CONFIG_CPU_V6)
ldr r0, [sp]
strex r1, r2, [sp] @ clear the exclusive monitor
ldmib sp, {r1 - pc}^ @ load r1 - pc, cpsr
#elif defined(CONFIG_CPU_32v6K)
clrex @ clear the exclusive monitor
ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr
#else
ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr
#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_32v6K)
@ We must avoid clrex due to Cortex-A15 erratum #830321
sub r0, sp, #4 @ uninhabited address
strex r1, r2, [r0] @ clear the exclusive monitor
#endif
ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr
.endm
.macro restore_user_regs, fast = 0, offset = 0
ldr r1, [sp, #\offset + S_PSR] @ get calling cpsr
ldr lr, [sp, #\offset + S_PC]! @ get pc
msr spsr_cxsf, r1 @ save in spsr_svc
#if defined(CONFIG_CPU_V6)
#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_32v6K)
@ We must avoid clrex due to Cortex-A15 erratum #830321
strex r1, r2, [sp] @ clear the exclusive monitor
#elif defined(CONFIG_CPU_32v6K)
clrex @ clear the exclusive monitor
#endif
.if \fast
ldmdb sp, {r1 - lr}^ @ get calling r1 - lr
@ -261,7 +256,10 @@
.endif
ldr lr, [sp, #S_SP] @ top of the stack
ldrd r0, r1, [sp, #S_LR] @ calling lr and pc
clrex @ clear the exclusive monitor
@ We must avoid clrex due to Cortex-A15 erratum #830321
strex r2, r1, [sp, #S_LR] @ clear the exclusive monitor
stmdb lr!, {r0, r1, \rpsr} @ calling lr and rfe context
ldmia sp, {r0 - r12}
mov sp, lr
@ -282,13 +280,16 @@
.endm
#else /* ifdef CONFIG_CPU_V7M */
.macro restore_user_regs, fast = 0, offset = 0
clrex @ clear the exclusive monitor
mov r2, sp
load_user_sp_lr r2, r3, \offset + S_SP @ calling sp, lr
ldr r1, [sp, #\offset + S_PSR] @ get calling cpsr
ldr lr, [sp, #\offset + S_PC] @ get pc
add sp, sp, #\offset + S_SP
msr spsr_cxsf, r1 @ save in spsr_svc
@ We must avoid clrex due to Cortex-A15 erratum #830321
strex r1, r2, [sp] @ clear the exclusive monitor
.if \fast
ldmdb sp, {r1 - r12} @ get calling r1 - r12
.else

1
arch/arm/kernel/module.c
View File

@ -91,6 +91,7 @@ apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex,
break;
case R_ARM_ABS32:
case R_ARM_TARGET1:
*(u32 *)loc += sym->st_value;
break;

2
arch/arm/kvm/handle_exit.c
View File

@ -93,6 +93,8 @@ static int kvm_handle_wfx(struct kvm_vcpu *vcpu, struct kvm_run *run)
else
kvm_vcpu_block(vcpu);
kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu));
return 1;
}

4
arch/arm/kvm/init.S
View File

@ -99,6 +99,10 @@ __do_hyp_init:
mrc p15, 0, r0, c10, c2, 1
mcr p15, 4, r0, c10, c2, 1
@ Invalidate the stale TLBs from Bootloader
mcr p15, 4, r0, c8, c7, 0 @ TLBIALLH
dsb ish
@ Set the HSCTLR to:
@ - ARM/THUMB exceptions: Kernel config (Thumb-2 kernel)
@ - Endianness: Kernel config

11
arch/arm/mach-at91/board-dt-rm9200.c
View File

@ -14,6 +14,7 @@
#include <linux/gpio.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/clk-provider.h>
#include <asm/setup.h>
#include <asm/irq.h>
@ -35,13 +36,21 @@ static void __init at91rm9200_dt_init_irq(void)
of_irq_init(irq_of_match);
}
static void __init at91rm9200_dt_timer_init(void)
{
#if defined(CONFIG_COMMON_CLK)
of_clk_init(NULL);
#endif
at91rm9200_timer_init();
}
static const char *at91rm9200_dt_board_compat[] __initdata = {
"atmel,at91rm9200",
NULL
};
DT_MACHINE_START(at91rm9200_dt, "Atmel AT91RM9200 (Device Tree)")
.init_time = at91rm9200_timer_init,
.init_time = at91rm9200_dt_timer_init,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = at91rm9200_dt_initialize,

1
arch/arm/mach-bcm/Makefile
View File

@ -36,5 +36,4 @@ obj-$(CONFIG_ARCH_BCM_5301X) += bcm_5301x.o
ifeq ($(CONFIG_ARCH_BRCMSTB),y)
obj-y += brcmstb.o
obj-$(CONFIG_SMP) += headsmp-brcmstb.o platsmp-brcmstb.o
endif

19
arch/arm/mach-bcm/brcmstb.h
View File

@ -1,19 +0,0 @@
/*
* Copyright (C) 2013-2014 Broadcom Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __BRCMSTB_H__
#define __BRCMSTB_H__
void brcmstb_secondary_startup(void);
#endif /* __BRCMSTB_H__ */

33
arch/arm/mach-bcm/headsmp-brcmstb.S
View File

@ -1,33 +0,0 @@
/*
* SMP boot code for secondary CPUs
* Based on arch/arm/mach-tegra/headsmp.S
*
* Copyright (C) 2010 NVIDIA, Inc.
* Copyright (C) 2013-2014 Broadcom Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <asm/assembler.h>
#include <linux/linkage.h>
#include <linux/init.h>
.section ".text.head", "ax"
ENTRY(brcmstb_secondary_startup)
/*
* Ensure CPU is in a sane state by disabling all IRQs and switching
* into SVC mode.
*/
setmode PSR_I_BIT | PSR_F_BIT | SVC_MODE, r0
bl v7_invalidate_l1
b secondary_startup
ENDPROC(brcmstb_secondary_startup)

363
arch/arm/mach-bcm/platsmp-brcmstb.c
View File

@ -1,363 +0,0 @@
/*
* Broadcom STB CPU SMP and hotplug support for ARM
*
* Copyright (C) 2013-2014 Broadcom Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/printk.h>
#include <linux/regmap.h>
#include <linux/smp.h>
#include <linux/mfd/syscon.h>
#include <linux/spinlock.h>
#include <asm/cacheflush.h>
#include <asm/cp15.h>
#include <asm/mach-types.h>
#include <asm/smp_plat.h>
#include "brcmstb.h"
enum {
ZONE_MAN_CLKEN_MASK = BIT(0),
ZONE_MAN_RESET_CNTL_MASK = BIT(1),
ZONE_MAN_MEM_PWR_MASK = BIT(4),
ZONE_RESERVED_1_MASK = BIT(5),
ZONE_MAN_ISO_CNTL_MASK = BIT(6),
ZONE_MANUAL_CONTROL_MASK = BIT(7),
ZONE_PWR_DN_REQ_MASK = BIT(9),
ZONE_PWR_UP_REQ_MASK = BIT(10),
ZONE_BLK_RST_ASSERT_MASK = BIT(12),
ZONE_PWR_OFF_STATE_MASK = BIT(25),
ZONE_PWR_ON_STATE_MASK = BIT(26),
ZONE_DPG_PWR_STATE_MASK = BIT(28),
ZONE_MEM_PWR_STATE_MASK = BIT(29),
ZONE_RESET_STATE_MASK = BIT(31),
CPU0_PWR_ZONE_CTRL_REG = 1,
CPU_RESET_CONFIG_REG = 2,
};
static void __iomem *cpubiuctrl_block;
static void __iomem *hif_cont_block;
static u32 cpu0_pwr_zone_ctrl_reg;
static u32 cpu_rst_cfg_reg;
static u32 hif_cont_reg;
#ifdef CONFIG_HOTPLUG_CPU
static DEFINE_PER_CPU_ALIGNED(int, per_cpu_sw_state);
static int per_cpu_sw_state_rd(u32 cpu)
{
sync_cache_r(SHIFT_PERCPU_PTR(&per_cpu_sw_state, per_cpu_offset(cpu)));
return per_cpu(per_cpu_sw_state, cpu);
}
static void per_cpu_sw_state_wr(u32 cpu, int val)
{
per_cpu(per_cpu_sw_state, cpu) = val;
dmb();
sync_cache_w(SHIFT_PERCPU_PTR(&per_cpu_sw_state, per_cpu_offset(cpu)));
dsb_sev();
}
#else
static inline void per_cpu_sw_state_wr(u32 cpu, int val) { }
#endif
static void __iomem *pwr_ctrl_get_base(u32 cpu)
{
void __iomem *base = cpubiuctrl_block + cpu0_pwr_zone_ctrl_reg;
base += (cpu_logical_map(cpu) * 4);
return base;
}
static u32 pwr_ctrl_rd(u32 cpu)
{
void __iomem *base = pwr_ctrl_get_base(cpu);
return readl_relaxed(base);
}
static void pwr_ctrl_wr(u32 cpu, u32 val)
{
void __iomem *base = pwr_ctrl_get_base(cpu);
writel(val, base);
}
static void cpu_rst_cfg_set(u32 cpu, int set)
{
u32 val;
val = readl_relaxed(cpubiuctrl_block + cpu_rst_cfg_reg);
if (set)
val |= BIT(cpu_logical_map(cpu));
else
val &= ~BIT(cpu_logical_map(cpu));
writel_relaxed(val, cpubiuctrl_block + cpu_rst_cfg_reg);
}
static void cpu_set_boot_addr(u32 cpu, unsigned long boot_addr)
{
const int reg_ofs = cpu_logical_map(cpu) * 8;
writel_relaxed(0, hif_cont_block + hif_cont_reg + reg_ofs);
writel_relaxed(boot_addr, hif_cont_block + hif_cont_reg + 4 + reg_ofs);
}
static void brcmstb_cpu_boot(u32 cpu)
{
pr_info("SMP: Booting CPU%d...\n", cpu);
/*
* set the reset vector to point to the secondary_startup
* routine
*/
cpu_set_boot_addr(cpu, virt_to_phys(brcmstb_secondary_startup));
/* unhalt the cpu */
cpu_rst_cfg_set(cpu, 0);
}
static void brcmstb_cpu_power_on(u32 cpu)
{
/*
* The secondary cores power was cut, so we must go through
* power-on initialization.
*/
u32 tmp;
pr_info("SMP: Powering up CPU%d...\n", cpu);
/* Request zone power up */
pwr_ctrl_wr(cpu, ZONE_PWR_UP_REQ_MASK);
/* Wait for the power up FSM to complete */
do {
tmp = pwr_ctrl_rd(cpu);
} while (!(tmp & ZONE_PWR_ON_STATE_MASK));
per_cpu_sw_state_wr(cpu, 1);
}
static int brcmstb_cpu_get_power_state(u32 cpu)
{
int tmp = pwr_ctrl_rd(cpu);
return (tmp & ZONE_RESET_STATE_MASK) ? 0 : 1;
}
#ifdef CONFIG_HOTPLUG_CPU
static void brcmstb_cpu_die(u32 cpu)
{
v7_exit_coherency_flush(all);
/* Prevent all interrupts from reaching this CPU. */
arch_local_irq_disable();
/*
* Final full barrier to ensure everything before this instruction has
* quiesced.
*/
isb();
dsb();
per_cpu_sw_state_wr(cpu, 0);
/* Sit and wait to die */
wfi();
/* We should never get here... */
panic("Spurious interrupt on CPU %d received!\n", cpu);
}
static int brcmstb_cpu_kill(u32 cpu)
{
u32 tmp;
pr_info("SMP: Powering down CPU%d...\n", cpu);
while (per_cpu_sw_state_rd(cpu))
;
/* Program zone reset */
pwr_ctrl_wr(cpu, ZONE_RESET_STATE_MASK | ZONE_BLK_RST_ASSERT_MASK |
ZONE_PWR_DN_REQ_MASK);
/* Verify zone reset */
tmp = pwr_ctrl_rd(cpu);
if (!(tmp & ZONE_RESET_STATE_MASK))
pr_err("%s: Zone reset bit for CPU %d not asserted!\n",
__func__, cpu);
/* Wait for power down */
do {
tmp = pwr_ctrl_rd(cpu);
} while (!(tmp & ZONE_PWR_OFF_STATE_MASK));
/* Settle-time from Broadcom-internal DVT reference code */
udelay(7);
/* Assert reset on the CPU */
cpu_rst_cfg_set(cpu, 1);
return 1;
}
#endif /* CONFIG_HOTPLUG_CPU */
static int __init setup_hifcpubiuctrl_regs(struct device_node *np)
{
int rc = 0;
char *name;
struct device_node *syscon_np = NULL;
name = "syscon-cpu";
syscon_np = of_parse_phandle(np, name, 0);
if (!syscon_np) {
pr_err("can't find phandle %s\n", name);
rc = -EINVAL;
goto cleanup;
}
cpubiuctrl_block = of_iomap(syscon_np, 0);
if (!cpubiuctrl_block) {
pr_err("iomap failed for cpubiuctrl_block\n");
rc = -EINVAL;
goto cleanup;
}
rc = of_property_read_u32_index(np, name, CPU0_PWR_ZONE_CTRL_REG,
&cpu0_pwr_zone_ctrl_reg);
if (rc) {
pr_err("failed to read 1st entry from %s property (%d)\n", name,
rc);
rc = -EINVAL;
goto cleanup;
}
rc = of_property_read_u32_index(np, name, CPU_RESET_CONFIG_REG,
&cpu_rst_cfg_reg);
if (rc) {
pr_err("failed to read 2nd entry from %s property (%d)\n", name,
rc);
rc = -EINVAL;
goto cleanup;
}
cleanup:
if (syscon_np)
of_node_put(syscon_np);
return rc;
}
static int __init setup_hifcont_regs(struct device_node *np)
{
int rc = 0;
char *name;
struct device_node *syscon_np = NULL;
name = "syscon-cont";
syscon_np = of_parse_phandle(np, name, 0);
if (!syscon_np) {
pr_err("can't find phandle %s\n", name);
rc = -EINVAL;
goto cleanup;
}
hif_cont_block = of_iomap(syscon_np, 0);
if (!hif_cont_block) {
pr_err("iomap failed for hif_cont_block\n");
rc = -EINVAL;
goto cleanup;
}
/* offset is at top of hif_cont_block */
hif_cont_reg = 0;
cleanup:
if (syscon_np)
of_node_put(syscon_np);
return rc;
}
static void __init brcmstb_cpu_ctrl_setup(unsigned int max_cpus)
{
int rc;
struct device_node *np;
char *name;
name = "brcm,brcmstb-smpboot";
np = of_find_compatible_node(NULL, NULL, name);
if (!np) {
pr_err("can't find compatible node %s\n", name);
return;
}
rc = setup_hifcpubiuctrl_regs(np);
if (rc)
return;
rc = setup_hifcont_regs(np);
if (rc)
return;
}
static DEFINE_SPINLOCK(boot_lock);
static void brcmstb_secondary_init(unsigned int cpu)
{
/*
* Synchronise with the boot thread.
*/
spin_lock(&boot_lock);
spin_unlock(&boot_lock);
}
static int brcmstb_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
/*
* set synchronisation state between this boot processor
* and the secondary one
*/
spin_lock(&boot_lock);
/* Bring up power to the core if necessary */
if (brcmstb_cpu_get_power_state(cpu) == 0)
brcmstb_cpu_power_on(cpu);
brcmstb_cpu_boot(cpu);
/*
* now the secondary core is starting up let it run its
* calibrations, then wait for it to finish
*/
spin_unlock(&boot_lock);
return 0;
}
static struct smp_operations brcmstb_smp_ops __initdata = {
.smp_prepare_cpus = brcmstb_cpu_ctrl_setup,
.smp_secondary_init = brcmstb_secondary_init,
.smp_boot_secondary = brcmstb_boot_secondary,
#ifdef CONFIG_HOTPLUG_CPU
.cpu_kill = brcmstb_cpu_kill,
.cpu_die = brcmstb_cpu_die,
#endif
};
CPU_METHOD_OF_DECLARE(brcmstb_smp, "brcm,brahma-b15", &brcmstb_smp_ops);

1
arch/arm/mach-exynos/mcpm-exynos.c
View File

@ -43,7 +43,6 @@
"mcr p15, 0, r0, c1, c0, 0 @ set SCTLR\n\t" \
"isb\n\t"\
"bl v7_flush_dcache_"__stringify(level)"\n\t" \
"clrex\n\t"\
"mrc p15, 0, r0, c1, c0, 1 @ get ACTLR\n\t" \
"bic r0, r0, #(1 << 6) @ disable local coherency\n\t" \
/* Dummy Load of a device register to avoid Erratum 799270 */ \

2
arch/arm/mach-imx/Kconfig
View File

@ -85,7 +85,6 @@ config SOC_IMX25
config SOC_IMX27
bool
select ARCH_HAS_OPP
select CPU_ARM926T
select IMX_HAVE_IOMUX_V1
select MXC_AVIC
@ -659,7 +658,6 @@ comment "Device tree only"
config SOC_IMX5
bool
select ARCH_HAS_OPP
select HAVE_IMX_SRC
select MXC_TZIC

2
arch/arm/mach-imx/Makefile
View File

@ -93,9 +93,11 @@ obj-$(CONFIG_HAVE_IMX_ANATOP) += anatop.o
obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o
obj-$(CONFIG_HAVE_IMX_MMDC) += mmdc.o
obj-$(CONFIG_HAVE_IMX_SRC) += src.o
ifdef CONFIG_SOC_IMX6
AFLAGS_headsmp.o :=-Wa,-march=armv7-a
obj-$(CONFIG_SMP) += headsmp.o platsmp.o
obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
endif
obj-$(CONFIG_SOC_IMX6Q) += clk-imx6q.o mach-imx6q.o
obj-$(CONFIG_SOC_IMX6SL) += clk-imx6sl.o mach-imx6sl.o
obj-$(CONFIG_SOC_IMX6SX) += clk-imx6sx.o mach-imx6sx.o

10
arch/arm/mach-imx/clk-imx6q.c
View File

@ -194,6 +194,10 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node)
clk[IMX6QDL_CLK_PLL3_80M] = imx_clk_fixed_factor("pll3_80m", "pll3_usb_otg", 1, 6);
clk[IMX6QDL_CLK_PLL3_60M] = imx_clk_fixed_factor("pll3_60m", "pll3_usb_otg", 1, 8);
clk[IMX6QDL_CLK_TWD] = imx_clk_fixed_factor("twd", "arm", 1, 2);
if (cpu_is_imx6dl()) {
clk[IMX6QDL_CLK_GPU2D_AXI] = imx_clk_fixed_factor("gpu2d_axi", "mmdc_ch0_axi_podf", 1, 1);
clk[IMX6QDL_CLK_GPU3D_AXI] = imx_clk_fixed_factor("gpu3d_axi", "mmdc_ch0_axi_podf", 1, 1);
}
clk[IMX6QDL_CLK_PLL4_POST_DIV] = clk_register_divider_table(NULL, "pll4_post_div", "pll4_audio", CLK_SET_RATE_PARENT, base + 0x70, 19, 2, 0, post_div_table, &imx_ccm_lock);
clk[IMX6QDL_CLK_PLL4_AUDIO_DIV] = clk_register_divider(NULL, "pll4_audio_div", "pll4_post_div", CLK_SET_RATE_PARENT, base + 0x170, 15, 1, 0, &imx_ccm_lock);
@ -217,8 +221,10 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node)
clk[IMX6QDL_CLK_ESAI_SEL] = imx_clk_mux("esai_sel", base + 0x20, 19, 2, audio_sels, ARRAY_SIZE(audio_sels));
clk[IMX6QDL_CLK_ASRC_SEL] = imx_clk_mux("asrc_sel", base + 0x30, 7, 2, audio_sels, ARRAY_SIZE(audio_sels));
clk[IMX6QDL_CLK_SPDIF_SEL] = imx_clk_mux("spdif_sel", base + 0x30, 20, 2, audio_sels, ARRAY_SIZE(audio_sels));
clk[IMX6QDL_CLK_GPU2D_AXI] = imx_clk_mux("gpu2d_axi", base + 0x18, 0, 1, gpu_axi_sels, ARRAY_SIZE(gpu_axi_sels));
clk[IMX6QDL_CLK_GPU3D_AXI] = imx_clk_mux("gpu3d_axi", base + 0x18, 1, 1, gpu_axi_sels, ARRAY_SIZE(gpu_axi_sels));
if (cpu_is_imx6q()) {
clk[IMX6QDL_CLK_GPU2D_AXI] = imx_clk_mux("gpu2d_axi", base + 0x18, 0, 1, gpu_axi_sels, ARRAY_SIZE(gpu_axi_sels));
clk[IMX6QDL_CLK_GPU3D_AXI] = imx_clk_mux("gpu3d_axi", base + 0x18, 1, 1, gpu_axi_sels, ARRAY_SIZE(gpu_axi_sels));
}
clk[IMX6QDL_CLK_GPU2D_CORE_SEL] = imx_clk_mux("gpu2d_core_sel", base + 0x18, 16, 2, gpu2d_core_sels, ARRAY_SIZE(gpu2d_core_sels));
clk[IMX6QDL_CLK_GPU3D_CORE_SEL] = imx_clk_mux("gpu3d_core_sel", base + 0x18, 4, 2, gpu3d_core_sels, ARRAY_SIZE(gpu3d_core_sels));
clk[IMX6QDL_CLK_GPU3D_SHADER_SEL] = imx_clk_mux("gpu3d_shader_sel", base + 0x18, 8, 2, gpu3d_shader_sels, ARRAY_SIZE(gpu3d_shader_sels));

2
arch/arm/mach-imx/suspend-imx6.S
View File

@ -173,6 +173,8 @@ ENTRY(imx6_suspend)
ldr r6, [r11, #0x0]
ldr r11, [r0, #PM_INFO_MX6Q_GPC_V_OFFSET]
ldr r6, [r11, #0x0]
ldr r11, [r0, #PM_INFO_MX6Q_IOMUXC_V_OFFSET]
ldr r6, [r11, #0x0]
/* use r11 to store the IO address */
ldr r11, [r0, #PM_INFO_MX6Q_SRC_V_OFFSET]

2
arch/arm/mach-omap2/board-flash.c
View File

@ -142,7 +142,7 @@ __init board_nand_init(struct mtd_partition *nand_parts, u8 nr_parts, u8 cs,
board_nand_data.nr_parts = nr_parts;
board_nand_data.devsize = nand_type;
board_nand_data.ecc_opt = OMAP_ECC_HAM1_CODE_HW;
board_nand_data.ecc_opt = OMAP_ECC_HAM1_CODE_SW;
gpmc_nand_init(&board_nand_data, gpmc_t);
}
#endif /* CONFIG_MTD_NAND_OMAP2 || CONFIG_MTD_NAND_OMAP2_MODULE */

3
arch/arm/mach-omap2/gpmc-nand.c
View File

@ -49,7 +49,8 @@ static bool gpmc_hwecc_bch_capable(enum omap_ecc ecc_opt)
return 0;
/* legacy platforms support only HAM1 (1-bit Hamming) ECC scheme */
if (ecc_opt == OMAP_ECC_HAM1_CODE_HW)
if (ecc_opt == OMAP_ECC_HAM1_CODE_HW ||
ecc_opt == OMAP_ECC_HAM1_CODE_SW)
return 1;
else
return 0;

14
arch/arm/mach-omap2/gpmc.c
View File

@ -1207,8 +1207,7 @@ int gpmc_cs_program_settings(int cs, struct gpmc_settings *p)
}
}
if ((p->wait_on_read || p->wait_on_write) &&
(p->wait_pin > gpmc_nr_waitpins)) {
if (p->wait_pin > gpmc_nr_waitpins) {
pr_err("%s: invalid wait-pin (%d)\n", __func__, p->wait_pin);
return -EINVAL;
}
@ -1288,8 +1287,8 @@ void gpmc_read_settings_dt(struct device_node *np, struct gpmc_settings *p)
p->wait_on_write = of_property_read_bool(np,
"gpmc,wait-on-write");
if (!p->wait_on_read && !p->wait_on_write)
pr_warn("%s: read/write wait monitoring not enabled!\n",
__func__);
pr_debug("%s: rd/wr wait monitoring not enabled!\n",
__func__);
}
}
@ -1403,8 +1402,11 @@ static int gpmc_probe_nand_child(struct platform_device *pdev,
pr_err("%s: ti,nand-ecc-opt not found\n", __func__);
return -ENODEV;
}
if (!strcmp(s, "ham1") || !strcmp(s, "sw") ||
!strcmp(s, "hw") || !strcmp(s, "hw-romcode"))
if (!strcmp(s, "sw"))
gpmc_nand_data->ecc_opt = OMAP_ECC_HAM1_CODE_SW;
else if (!strcmp(s, "ham1") ||
!strcmp(s, "hw") || !strcmp(s, "hw-romcode"))
gpmc_nand_data->ecc_opt =
OMAP_ECC_HAM1_CODE_HW;
else if (!strcmp(s, "bch4"))

2
arch/arm/mach-omap2/id.c
View File

@ -663,7 +663,7 @@ void __init dra7xxx_check_revision(void)
default:
/* Unknown default to latest silicon rev as default*/
pr_warn("%s: unknown idcode=0x%08x (hawkeye=0x%08x,rev=0x%d)\n",
pr_warn("%s: unknown idcode=0x%08x (hawkeye=0x%08x,rev=0x%x)\n",
__func__, idcode, hawkeye, rev);
omap_revision = DRA752_REV_ES1_1;
}

2
arch/arm/mach-omap2/omap_device.c
View File

@ -56,7 +56,7 @@ static void _add_clkdev(struct omap_device *od, const char *clk_alias,
r = clk_get_sys(dev_name(&od->pdev->dev), clk_alias);
if (!IS_ERR(r)) {
dev_warn(&od->pdev->dev,
dev_dbg(&od->pdev->dev,
"alias %s already exists\n", clk_alias);
clk_put(r);
return;

7
arch/arm/mach-omap2/omap_hwmod.c
View File

@ -2185,6 +2185,8 @@ static int _enable(struct omap_hwmod *oh)
oh->mux->pads_dynamic))) {
omap_hwmod_mux(oh->mux, _HWMOD_STATE_ENABLED);
_reconfigure_io_chain();
} else if (oh->flags & HWMOD_FORCE_MSTANDBY) {
_reconfigure_io_chain();
}
_add_initiator_dep(oh, mpu_oh);
@ -2291,6 +2293,8 @@ static int _idle(struct omap_hwmod *oh)
if (oh->mux && oh->mux->pads_dynamic) {
omap_hwmod_mux(oh->mux, _HWMOD_STATE_IDLE);
_reconfigure_io_chain();
} else if (oh->flags & HWMOD_FORCE_MSTANDBY) {
_reconfigure_io_chain();
}
oh->_state = _HWMOD_STATE_IDLE;
@ -3345,6 +3349,9 @@ int __init omap_hwmod_register_links(struct omap_hwmod_ocp_if **ois)
if (!ois)
return 0;
if (ois[0] == NULL) /* Empty list */
return 0;
if (!linkspace) {
if (_alloc_linkspace(ois)) {
pr_err("omap_hwmod: could not allocate link space\n");

22
arch/arm/mach-omap2/omap_hwmod_7xx_data.c
View File

@ -35,6 +35,7 @@
#include "i2c.h"
#include "mmc.h"
#include "wd_timer.h"
#include "soc.h"
/* Base offset for all DRA7XX interrupts external to MPUSS */
#define DRA7XX_IRQ_GIC_START 32
@ -3261,7 +3262,6 @@ static struct omap_hwmod_ocp_if *dra7xx_hwmod_ocp_ifs[] __initdata = {
&dra7xx_l4_per3__usb_otg_ss1,
&dra7xx_l4_per3__usb_otg_ss2,
&dra7xx_l4_per3__usb_otg_ss3,
&dra7xx_l4_per3__usb_otg_ss4,
&dra7xx_l3_main_1__vcp1,
&dra7xx_l4_per2__vcp1,
&dra7xx_l3_main_1__vcp2,
@ -3270,8 +3270,26 @@ static struct omap_hwmod_ocp_if *dra7xx_hwmod_ocp_ifs[] __initdata = {
NULL,
};
static struct omap_hwmod_ocp_if *dra74x_hwmod_ocp_ifs[] __initdata = {
&dra7xx_l4_per3__usb_otg_ss4,
NULL,
};
static struct omap_hwmod_ocp_if *dra72x_hwmod_ocp_ifs[] __initdata = {
NULL,
};
int __init dra7xx_hwmod_init(void)
{
int ret;
omap_hwmod_init();
return omap_hwmod_register_links(dra7xx_hwmod_ocp_ifs);
ret = omap_hwmod_register_links(dra7xx_hwmod_ocp_ifs);
if (!ret && soc_is_dra74x())
return omap_hwmod_register_links(dra74x_hwmod_ocp_ifs);
else if (!ret && soc_is_dra72x())
return omap_hwmod_register_links(dra72x_hwmod_ocp_ifs);
return ret;
}

6
arch/arm/mach-omap2/soc.h
View File

@ -245,6 +245,8 @@ IS_AM_SUBCLASS(437x, 0x437)
#define soc_is_omap54xx() 0
#define soc_is_omap543x() 0
#define soc_is_dra7xx() 0
#define soc_is_dra74x() 0
#define soc_is_dra72x() 0
#if defined(MULTI_OMAP2)
# if defined(CONFIG_ARCH_OMAP2)
@ -393,7 +395,11 @@ IS_OMAP_TYPE(3430, 0x3430)
#if defined(CONFIG_SOC_DRA7XX)
#undef soc_is_dra7xx
#undef soc_is_dra74x
#undef soc_is_dra72x
#define soc_is_dra7xx() (of_machine_is_compatible("ti,dra7"))
#define soc_is_dra74x() (of_machine_is_compatible("ti,dra74"))
#define soc_is_dra72x() (of_machine_is_compatible("ti,dra72"))
#endif
/* Various silicon revisions for omap2 */

2
arch/arm/mach-shmobile/Kconfig
View File

@ -75,6 +75,7 @@ config ARCH_SH7372
select ARM_CPU_SUSPEND if PM || CPU_IDLE
select CPU_V7
select SH_CLK_CPG
select SH_INTC
select SYS_SUPPORTS_SH_CMT
select SYS_SUPPORTS_SH_TMU
@ -85,6 +86,7 @@ config ARCH_SH73A0
select CPU_V7
select I2C
select SH_CLK_CPG
select SH_INTC
select RENESAS_INTC_IRQPIN
select SYS_SUPPORTS_SH_CMT
select SYS_SUPPORTS_SH_TMU

4
arch/arm/mach-shmobile/clock-r8a7790.c
View File

@ -183,8 +183,8 @@ enum {
static struct clk div4_clks[DIV4_NR] = {
[DIV4_SDH] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 8, 0x0dff, CLK_ENABLE_ON_INIT),
[DIV4_SD0] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 4, 0x1de0, CLK_ENABLE_ON_INIT),
[DIV4_SD1] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 0, 0x1de0, CLK_ENABLE_ON_INIT),
[DIV4_SD0] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 4, 0x1df0, CLK_ENABLE_ON_INIT),
[DIV4_SD1] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 0, 0x1df0, CLK_ENABLE_ON_INIT),
};
/* DIV6 clocks */

2
arch/arm/mach-shmobile/clock-r8a7791.c
View File

@ -152,7 +152,7 @@ enum {
static struct clk div4_clks[DIV4_NR] = {
[DIV4_SDH] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 8, 0x0dff, CLK_ENABLE_ON_INIT),
[DIV4_SD0] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 4, 0x1de0, CLK_ENABLE_ON_INIT),
[DIV4_SD0] = SH_CLK_DIV4(&pll1_clk, SDCKCR, 4, 0x1df0, CLK_ENABLE_ON_INIT),
};
/* DIV6 clocks */

2
arch/arm/mach-shmobile/clock-sh73a0.c
View File

@ -644,7 +644,7 @@ static struct clk_lookup lookups[] = {
CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[MSTP207]), /* SCIFA5 */
CLKDEV_DEV_ID("e6cb0000.serial", &mstp_clks[MSTP207]), /* SCIFA5 */
CLKDEV_DEV_ID("sh-sci.8", &mstp_clks[MSTP206]), /* SCIFB */
CLKDEV_DEV_ID("0xe6c3000.serial", &mstp_clks[MSTP206]), /* SCIFB */
CLKDEV_DEV_ID("e6c3000.serial", &mstp_clks[MSTP206]), /* SCIFB */
CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[MSTP204]), /* SCIFA0 */
CLKDEV_DEV_ID("e6c40000.serial", &mstp_clks[MSTP204]), /* SCIFA0 */
CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[MSTP203]), /* SCIFA1 */

14
arch/arm/mach-vexpress/spc.c
View File

@ -426,9 +426,15 @@ static int ve_spc_populate_opps(uint32_t cluster)
static int ve_init_opp_table(struct device *cpu_dev)
{
int cluster = topology_physical_package_id(cpu_dev->id);
int idx, ret = 0, max_opp = info->num_opps[cluster];
struct ve_spc_opp *opps = info->opps[cluster];
int cluster;
int idx, ret = 0, max_opp;
struct ve_spc_opp *opps;
cluster = topology_physical_package_id(cpu_dev->id);
cluster = cluster < 0 ? 0 : cluster;
max_opp = info->num_opps[cluster];
opps = info->opps[cluster];
for (idx = 0; idx < max_opp; idx++, opps++) {
ret = dev_pm_opp_add(cpu_dev, opps->freq * 1000, opps->u_volt);
@ -537,6 +543,8 @@ static struct clk *ve_spc_clk_register(struct device *cpu_dev)
spc->hw.init = &init;
spc->cluster = topology_physical_package_id(cpu_dev->id);
spc->cluster = spc->cluster < 0 ? 0 : spc->cluster;
init.name = dev_name(cpu_dev);
init.ops = &clk_spc_ops;
init.flags = CLK_IS_ROOT | CLK_GET_RATE_NOCACHE;

6
arch/arm/mm/abort-ev6.S
View File

@ -17,12 +17,6 @@
*/
.align 5
ENTRY(v6_early_abort)
#ifdef CONFIG_CPU_V6
sub r1, sp, #4 @ Get unused stack location
strex r0, r1, [r1] @ Clear the exclusive monitor
#elif defined(CONFIG_CPU_32v6K)
clrex
#endif
mrc p15, 0, r1, c5, c0, 0 @ get FSR
mrc p15, 0, r0, c6, c0, 0 @ get FAR
/*

6
arch/arm/mm/abort-ev7.S
View File

@ -13,12 +13,6 @@
*/
.align 5
ENTRY(v7_early_abort)
/*
* The effect of data aborts on on the exclusive access monitor are
* UNPREDICTABLE. Do a CLREX to clear the state
*/
clrex
mrc p15, 0, r1, c5, c0, 0 @ get FSR
mrc p15, 0, r0, c6, c0, 0 @ get FAR

1
arch/arm64/crypto/sha2-ce-glue.c
View File

@ -150,7 +150,6 @@ static void sha2_finup(struct shash_desc *desc, const u8 *data,
kernel_neon_begin_partial(28);
sha2_ce_transform(blocks, data, sctx->state, NULL, len);
kernel_neon_end();
data += blocks * SHA256_BLOCK_SIZE;
}
static int sha224_finup(struct shash_desc *desc, const u8 *data,

1
arch/arm64/include/asm/hw_breakpoint.h
View File

@ -79,7 +79,6 @@ static inline void decode_ctrl_reg(u32 reg,
*/
#define ARM_MAX_BRP 16
#define ARM_MAX_WRP 16
#define ARM_MAX_HBP_SLOTS (ARM_MAX_BRP + ARM_MAX_WRP)
/* Virtual debug register bases. */
#define AARCH64_DBG_REG_BVR 0

2
arch/arm64/include/asm/processor.h
View File

@ -139,7 +139,7 @@ extern struct task_struct *cpu_switch_to(struct task_struct *prev,
((struct pt_regs *)(THREAD_START_SP + task_stack_page(p)) - 1)
#define KSTK_EIP(tsk) ((unsigned long)task_pt_regs(tsk)->pc)
#define KSTK_ESP(tsk) ((unsigned long)task_pt_regs(tsk)->sp)
#define KSTK_ESP(tsk) user_stack_pointer(task_pt_regs(tsk))
/*
* Prefetching support

2
arch/arm64/include/asm/ptrace.h
View File

@ -137,7 +137,7 @@ struct pt_regs {
(!((regs)->pstate & PSR_F_BIT))
#define user_stack_pointer(regs) \
(!compat_user_mode(regs)) ? ((regs)->sp) : ((regs)->compat_sp)
(!compat_user_mode(regs) ? (regs)->sp : (regs)->compat_sp)
static inline unsigned long regs_return_value(struct pt_regs *regs)
{

2
arch/arm64/kernel/efi.c
View File

@ -465,6 +465,8 @@ static int __init arm64_enter_virtual_mode(void)
efi_native_runtime_setup();
set_bit(EFI_RUNTIME_SERVICES, &efi.flags);
efi.runtime_version = efi.systab->hdr.revision;
return 0;
err_unmap:

1
arch/arm64/kernel/fpsimd.c
View File

@ -270,6 +270,7 @@ static int fpsimd_cpu_pm_notifier(struct notifier_block *self,
case CPU_PM_ENTER:
if (current->mm && !test_thread_flag(TIF_FOREIGN_FPSTATE))
fpsimd_save_state(&current->thread.fpsimd_state);
this_cpu_write(fpsimd_last_state, NULL);
break;
case CPU_PM_EXIT:
if (current->mm)

4
arch/arm64/kernel/head.S
View File

@ -373,10 +373,6 @@ ENTRY(__boot_cpu_mode)
.long 0
.popsection
.align 3
2: .quad .
.quad PAGE_OFFSET
#ifdef CONFIG_SMP
.align 3
1: .quad .

6
arch/arm64/kernel/perf_regs.c
View File

@ -24,6 +24,12 @@ u64 perf_reg_value(struct pt_regs *regs, int idx)
return regs->compat_lr;
}
if ((u32)idx == PERF_REG_ARM64_SP)
return regs->sp;
if ((u32)idx == PERF_REG_ARM64_PC)
return regs->pc;
return regs->regs[idx];
}

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