leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Devicetree updates for v5.1:

Browse Source 
- Fix a unittest failure on UML. Preparation for converting to
   kunit test framework.
 
 - Add annotations to dtx_diff output
 
 - Fix unittest reporting of expected error
 
 - Move DMA configuration for virtual devices into the driver that
   needs it (s5p-mfc)
 
 - Vendor prefixes for feiyang and techstar
 
 - Convert ARM GIC, GICv3, and L2x0 to DT schema
 
 - Add r8a7778/9 HSCIF serial bindings
 -----BEGIN PGP SIGNATURE-----
 
 iQJEBAABCgAuFiEEktVUI4SxYhzZyEuo+vtdtY28YcMFAlyC0hoQHHJvYmhAa2Vy
 bmVsLm9yZwAKCRD6+121jbxhwzMdD/93737AUFqQNfMXlsrZs/OS9dGTQdYtuFOw
 Z2643O1l5QTPAleBqQWVGpxph67pQf3uZ+7zAsknJkweysMaDG1Ej22sFnyIM+Hh
 +IeLBYOtB7hd6FSCX40apT6Jlw2KG7Lqk0JvXVv7yXJRptsf7R6oUw8GoxxUBbsp
 4fL1IwuAyq3TrMtGETl7MW4QJma9A8zo9ngQSiRQr9yflROmE1dXjge+KPHOsTRr
 9PU6NSgsuUG0eBw9stL4bDZwXXGb3sEcXaItY5A37JTI6bLgPuk8cA4lp+gTL5RK
 77uGs8rbe8WqFPWeMmDwRdbSDasb52NDfGBG5Dj7n7tHVP7rubyA1XK3fVK5udjZ
 hHhQa0G5gLBnd9/7Je8udkvwH9ef/BjnHp1KFOBrCMLCgYX+QZQZUNwuTI5/l6E3
 A/dOo6JG+rshtI3P3Up69XOu1KMhacNVu/TTHVGkUeq5vf+iKr1BYu2VsVIHdQh7
 hdJ6syheq3qHBAOOuB5Z+yyFzwh1w98gpqlG8lUSYjnochej4YSgNTMef9vhdWZg
 vTdP/XNnYvH9XTqxSAhfIxUWeaggrngYQCQhci8F57DskKkPKeyFhxo7ODGD4bI6
 hXcUgk2OtEF2Sgk+X9XCtI5vJXuXvGxmlpZpdUe7LiVE3CnOwfFxvLfIhpw+2AIp
 /7S2Khwnsg==
 =CnTd
 -----END PGP SIGNATURE-----

Merge tag 'devicetree-for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull Devicetree updates from Rob Herring:

 - Fix a unittest failure on UML. Preparation for converting to kunit
   test framework.

 - Add annotations to dtx_diff output

 - Fix unittest reporting of expected error

 - Move DMA configuration for virtual devices into the driver that needs
   it (s5p-mfc)

 - Vendor prefixes for feiyang and techstar

 - Convert ARM GIC, GICv3, and L2x0 to DT schema

 - Add r8a7778/9 HSCIF serial bindings

* tag 'devicetree-for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of: unittest: unflatten device tree on UML when testing
  dt-bindings: Add vendor prefix for feiyang
  dt-bindings: Add vendor prefix for techstar
  dt-bindings: display: add missing semicolon in example
  of: mark early_init_dt_alloc_reserved_memory_arch static
  of: add dtc annotations functionality to dtx_diff
  of: unittest: add caution to function header comment
  of: unittest: remove report of expected error
  dt-bindings: interrupt-controller: Convert ARM GICv3 to json-schema
  dt-bindings: interrupt-controller: Convert ARM GIC to json-schema
  dt-bindings: arm: l2x0: Convert L2 cache to json-schema
  media: s5p-mfc: Fix memdev DMA configuration
  dt-bindings: serial: sh-sci: Document r8a7778/9 HSCIF bindings
This commit is contained in:
Linus Torvalds 2019-03-10 10:58:43 -07:00
commit 065b6c4c91
13 changed files with 786 additions and 476 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

114
Documentation/devicetree/bindings/arm/l2c2x0.txt
View File

@ -1,114 +0,0 @@
* ARM L2 Cache Controller
ARM cores often have a separate L2C210/L2C220/L2C310 (also known as PL210/PL220/
PL310 and variants) based level 2 cache controller. All these various implementations
of the L2 cache controller have compatible programming models (Note 1).
Some of the properties that are just prefixed "cache-*" are taken from section
3.7.3 of the Devicetree Specification which can be found at:
https://www.devicetree.org/specifications/
The ARM L2 cache representation in the device tree should be done as follows:
Required properties:
- compatible : should be one of:
"arm,pl310-cache"
"arm,l220-cache"
"arm,l210-cache"
"bcm,bcm11351-a2-pl310-cache": DEPRECATED by "brcm,bcm11351-a2-pl310-cache"
"brcm,bcm11351-a2-pl310-cache": For Broadcom bcm11351 chipset where an
offset needs to be added to the address before passing down to the L2
cache controller
"marvell,aurora-system-cache": Marvell Controller designed to be
compatible with the ARM one, with system cache mode (meaning
maintenance operations on L1 are broadcasted to the L2 and L2
performs the same operation).
"marvell,aurora-outer-cache": Marvell Controller designed to be
compatible with the ARM one with outer cache mode.
"marvell,tauros3-cache": Marvell Tauros3 cache controller, compatible
with arm,pl310-cache controller.
- cache-unified : Specifies the cache is a unified cache.
- cache-level : Should be set to 2 for a level 2 cache.
- reg : Physical base address and size of cache controller's memory mapped
registers.
Optional properties:
- arm,data-latency : Cycles of latency for Data RAM accesses. Specifies 3 cells of
read, write and setup latencies. Minimum valid values are 1. Controllers
without setup latency control should use a value of 0.
- arm,tag-latency : Cycles of latency for Tag RAM accesses. Specifies 3 cells of
read, write and setup latencies. Controllers without setup latency control
should use 0. Controllers without separate read and write Tag RAM latency
values should only use the first cell.
- arm,dirty-latency : Cycles of latency for Dirty RAMs. This is a single cell.
- arm,filter-ranges : <start length> Starting address and length of window to
filter. Addresses in the filter window are directed to the M1 port. Other
addresses will go to the M0 port.
- arm,io-coherent : indicates that the system is operating in an hardware
I/O coherent mode. Valid only when the arm,pl310-cache compatible
string is used.
- interrupts : 1 combined interrupt.
- cache-size : specifies the size in bytes of the cache
- cache-sets : specifies the number of associativity sets of the cache
- cache-block-size : specifies the size in bytes of a cache block
- cache-line-size : specifies the size in bytes of a line in the cache,
if this is not specified, the line size is assumed to be equal to the
cache block size
- cache-id-part: cache id part number to be used if it is not present
on hardware
- wt-override: If present then L2 is forced to Write through mode
- arm,double-linefill : Override double linefill enable setting. Enable if
non-zero, disable if zero.
- arm,double-linefill-incr : Override double linefill on INCR read. Enable
if non-zero, disable if zero.
- arm,double-linefill-wrap : Override double linefill on WRAP read. Enable
if non-zero, disable if zero.
- arm,prefetch-drop : Override prefetch drop enable setting. Enable if non-zero,
disable if zero.
- arm,prefetch-offset : Override prefetch offset value. Valid values are
0-7, 15, 23, and 31.
- arm,shared-override : The default behavior of the L220 or PL310 cache
controllers with respect to the shareable attribute is to transform "normal
memory non-cacheable transactions" into "cacheable no allocate" (for reads)
or "write through no write allocate" (for writes).
On systems where this may cause DMA buffer corruption, this property must be
specified to indicate that such transforms are precluded.
- arm,parity-enable : enable parity checking on the L2 cache (L220 or PL310).
- arm,parity-disable : disable parity checking on the L2 cache (L220 or PL310).
- arm,outer-sync-disable : disable the outer sync operation on the L2 cache.
Some core tiles, especially ARM PB11MPCore have a faulty L220 cache that
will randomly hang unless outer sync operations are disabled.
- prefetch-data : Data prefetch. Value: <0> (forcibly disable), <1>
(forcibly enable), property absent (retain settings set by firmware)
- prefetch-instr : Instruction prefetch. Value: <0> (forcibly disable),
<1> (forcibly enable), property absent (retain settings set by
firmware)
- arm,dynamic-clock-gating : L2 dynamic clock gating. Value: <0> (forcibly
disable), <1> (forcibly enable), property absent (OS specific behavior,
preferably retain firmware settings)
- arm,standby-mode: L2 standby mode enable. Value <0> (forcibly disable),
<1> (forcibly enable), property absent (OS specific behavior,
preferably retain firmware settings)
- arm,early-bresp-disable : Disable the CA9 optimization Early BRESP (PL310)
- arm,full-line-zero-disable : Disable the CA9 optimization Full line of zero
write (PL310)
Example:
L2: cache-controller {
compatible = "arm,pl310-cache";
reg = <0xfff12000 0x1000>;
arm,data-latency = <1 1 1>;
arm,tag-latency = <2 2 2>;
arm,filter-ranges = <0x80000000 0x8000000>;
cache-unified;
cache-level = <2>;
interrupts = <45>;
};
Note 1: The description in this document doesn't apply to integrated L2
cache controllers as found in e.g. Cortex-A15/A7/A57/A53. These
integrated L2 controllers are assumed to be all preconfigured by
early secure boot code. Thus no need to deal with their configuration
in the kernel at all.

248
Documentation/devicetree/bindings/arm/l2c2x0.yaml Normal file
View File

@ -0,0 +1,248 @@
# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/l2c2x0.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ARM L2 Cache Controller
maintainers:
- Rob Herring <robh@kernel.org>
description: |+
ARM cores often have a separate L2C210/L2C220/L2C310 (also known as PL210/
PL220/PL310 and variants) based level 2 cache controller. All these various
implementations of the L2 cache controller have compatible programming
models (Note 1). Some of the properties that are just prefixed "cache-*" are
taken from section 3.7.3 of the Devicetree Specification which can be found
at:
https://www.devicetree.org/specifications/
Note 1: The description in this document doesn't apply to integrated L2
cache controllers as found in e.g. Cortex-A15/A7/A57/A53. These
integrated L2 controllers are assumed to be all preconfigured by
early secure boot code. Thus no need to deal with their configuration
in the kernel at all.
allOf:
- $ref: /schemas/cache-controller.yaml#
properties:
compatible:
enum:
- arm,pl310-cache
- arm,l220-cache
- arm,l210-cache
# DEPRECATED by "brcm,bcm11351-a2-pl310-cache"
- bcm,bcm11351-a2-pl310-cache
# For Broadcom bcm11351 chipset where an
# offset needs to be added to the address before passing down to the L2
# cache controller
- brcm,bcm11351-a2-pl310-cache
# Marvell Controller designed to be
# compatible with the ARM one, with system cache mode (meaning
# maintenance operations on L1 are broadcasted to the L2 and L2
# performs the same operation).
- marvell,aurora-system-cache
# Marvell Controller designed to be
# compatible with the ARM one with outer cache mode.
- marvell,aurora-outer-cache
# Marvell Tauros3 cache controller, compatible
# with arm,pl310-cache controller.
- marvell,tauros3-cache
cache-level:
const: 2
cache-unified: true
cache-size: true
cache-sets: true
cache-block-size: true
cache-line-size: true
reg:
maxItems: 1
arm,data-latency:
description: Cycles of latency for Data RAM accesses. Specifies 3 cells of
read, write and setup latencies. Minimum valid values are 1. Controllers
without setup latency control should use a value of 0.
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32-array
- minItems: 2
maxItems: 3
items:
minimum: 0
maximum: 8
arm,tag-latency:
description: Cycles of latency for Tag RAM accesses. Specifies 3 cells of
read, write and setup latencies. Controllers without setup latency control
should use 0. Controllers without separate read and write Tag RAM latency
values should only use the first cell.
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32-array
- minItems: 1
maxItems: 3
items:
minimum: 0
maximum: 8
arm,dirty-latency:
description: Cycles of latency for Dirty RAMs. This is a single cell.
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
- minimum: 1
maximum: 8
arm,filter-ranges:
description: <start length> Starting address and length of window to
filter. Addresses in the filter window are directed to the M1 port. Other
addresses will go to the M0 port.
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32-array
- items:
minItems: 2
maxItems: 2
arm,io-coherent:
description: indicates that the system is operating in an hardware
I/O coherent mode. Valid only when the arm,pl310-cache compatible
string is used.
type: boolean
interrupts:
# Either a single combined interrupt or up to 9 individual interrupts
minItems: 1
maxItems: 9
cache-id-part:
description: cache id part number to be used if it is not present
on hardware
$ref: /schemas/types.yaml#/definitions/uint32
wt-override:
description: If present then L2 is forced to Write through mode
type: boolean
arm,double-linefill:
description: Override double linefill enable setting. Enable if
non-zero, disable if zero.
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
- enum: [ 0, 1 ]
arm,double-linefill-incr:
description: Override double linefill on INCR read. Enable
if non-zero, disable if zero.
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
- enum: [ 0, 1 ]
arm,double-linefill-wrap:
description: Override double linefill on WRAP read. Enable
if non-zero, disable if zero.
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
- enum: [ 0, 1 ]
arm,prefetch-drop:
description: Override prefetch drop enable setting. Enable if non-zero,
disable if zero.
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
- enum: [ 0, 1 ]
arm,prefetch-offset:
description: Override prefetch offset value.
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
- enum: [ 0, 1, 2, 3, 4, 5, 6, 7, 15, 23, 31 ]
arm,shared-override:
description: The default behavior of the L220 or PL310 cache
controllers with respect to the shareable attribute is to transform "normal
memory non-cacheable transactions" into "cacheable no allocate" (for reads)
or "write through no write allocate" (for writes).
On systems where this may cause DMA buffer corruption, this property must
be specified to indicate that such transforms are precluded.
type: boolean
arm,parity-enable:
description: enable parity checking on the L2 cache (L220 or PL310).
type: boolean
arm,parity-disable:
description: disable parity checking on the L2 cache (L220 or PL310).
type: boolean
arm,outer-sync-disable:
description: disable the outer sync operation on the L2 cache.
Some core tiles, especially ARM PB11MPCore have a faulty L220 cache that
will randomly hang unless outer sync operations are disabled.
type: boolean
prefetch-data:
description: |
Data prefetch. Value: <0> (forcibly disable), <1>
(forcibly enable), property absent (retain settings set by firmware)
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
- enum: [ 0, 1 ]
prefetch-instr:
description: |
Instruction prefetch. Value: <0> (forcibly disable),
<1> (forcibly enable), property absent (retain settings set by
firmware)
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
- enum: [ 0, 1 ]
arm,dynamic-clock-gating:
description: |
L2 dynamic clock gating. Value: <0> (forcibly
disable), <1> (forcibly enable), property absent (OS specific behavior,
preferably retain firmware settings)
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
- enum: [ 0, 1 ]
arm,standby-mode:
description: L2 standby mode enable. Value <0> (forcibly disable),
<1> (forcibly enable), property absent (OS specific behavior,
preferably retain firmware settings)
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
- enum: [ 0, 1 ]
arm,early-bresp-disable:
description: Disable the CA9 optimization Early BRESP (PL310)
type: boolean
arm,full-line-zero-disable:
description: Disable the CA9 optimization Full line of zero
write (PL310)
type: boolean
required:
- compatible
- cache-unified
- reg
additionalProperties: false
examples:
- |
cache-controller@fff12000 {
compatible = "arm,pl310-cache";
reg = <0xfff12000 0x1000>;
arm,data-latency = <1 1 1>;
arm,tag-latency = <2 2 2>;
arm,filter-ranges = <0x80000000 0x8000000>;
cache-unified;
cache-level = <2>;
interrupts = <45>;
};
...

2
Documentation/devicetree/bindings/display/sitronix,st7735r.txt
View File

@ -20,7 +20,7 @@ Example:
backlight: backlight {
compatible = "gpio-backlight";
gpios = <&gpio 44 GPIO_ACTIVE_HIGH>;
}
};
...

175
Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt
View File

@ -1,175 +0,0 @@
* ARM Generic Interrupt Controller, version 3
AArch64 SMP cores are often associated with a GICv3, providing Private
Peripheral Interrupts (PPI), Shared Peripheral Interrupts (SPI),
Software Generated Interrupts (SGI), and Locality-specific Peripheral
Interrupts (LPI).
Main node required properties:
- compatible : should at least contain "arm,gic-v3" or either
"qcom,msm8996-gic-v3", "arm,gic-v3" for msm8996 SoCs
to address SoC specific bugs/quirks
- interrupt-controller : Identifies the node as an interrupt controller
- #interrupt-cells : Specifies the number of cells needed to encode an
interrupt source. Must be a single cell with a value of at least 3.
If the system requires describing PPI affinity, then the value must
be at least 4.
The 1st cell is the interrupt type; 0 for SPI interrupts, 1 for PPI
interrupts. Other values are reserved for future use.
The 2nd cell contains the interrupt number for the interrupt type.
SPI interrupts are in the range [0-987]. PPI interrupts are in the
range [0-15].
The 3rd cell is the flags, encoded as follows:
bits[3:0] trigger type and level flags.
1 = edge triggered
4 = level triggered
The 4th cell is a phandle to a node describing a set of CPUs this
interrupt is affine to. The interrupt must be a PPI, and the node
pointed must be a subnode of the "ppi-partitions" subnode. For
interrupt types other than PPI or PPIs that are not partitionned,
this cell must be zero. See the "ppi-partitions" node description
below.
Cells 5 and beyond are reserved for future use and must have a value
of 0 if present.
- reg : Specifies base physical address(s) and size of the GIC
registers, in the following order:
- GIC Distributor interface (GICD)
- GIC Redistributors (GICR), one range per redistributor region
- GIC CPU interface (GICC)
- GIC Hypervisor interface (GICH)
- GIC Virtual CPU interface (GICV)
GICC, GICH and GICV are optional.
- interrupts : Interrupt source of the VGIC maintenance interrupt.
Optional
- redistributor-stride : If using padding pages, specifies the stride
of consecutive redistributors. Must be a multiple of 64kB.
- #redistributor-regions: The number of independent contiguous regions
occupied by the redistributors. Required if more than one such
region is present.
- msi-controller: Boolean property. Identifies the node as an MSI
controller. Only present if the Message Based Interrupt
functionnality is being exposed by the HW, and the mbi-ranges
property present.
- mbi-ranges: A list of pairs <intid span>, where "intid" is the first
SPI of a range that can be used an MBI, and "span" the size of that
range. Multiple ranges can be provided. Requires "msi-controller" to
be set.
- mbi-alias: Address property. Base address of an alias of the GICD
region containing only the {SET,CLR}SPI registers to be used if
isolation is required, and if supported by the HW.
Sub-nodes:
PPI affinity can be expressed as a single "ppi-partitions" node,
containing a set of sub-nodes, each with the following property:
- affinity: Should be a list of phandles to CPU nodes (as described in
Documentation/devicetree/bindings/arm/cpus.yaml).
GICv3 has one or more Interrupt Translation Services (ITS) that are
used to route Message Signalled Interrupts (MSI) to the CPUs.
These nodes must have the following properties:
- compatible : Should at least contain "arm,gic-v3-its".
- msi-controller : Boolean property. Identifies the node as an MSI controller
- #msi-cells: Must be <1>. The single msi-cell is the DeviceID of the device
which will generate the MSI.
- reg: Specifies the base physical address and size of the ITS
registers.
Optional:
- socionext,synquacer-pre-its: (u32, u32) tuple describing the untranslated
address and size of the pre-ITS window.
The main GIC node must contain the appropriate #address-cells,
#size-cells and ranges properties for the reg property of all ITS
nodes.
Examples:
gic: interrupt-controller@2cf00000 {
compatible = "arm,gic-v3";
#interrupt-cells = <3>;
#address-cells = <2>;
#size-cells = <2>;
ranges;
interrupt-controller;
reg = <0x0 0x2f000000 0 0x10000>, // GICD
<0x0 0x2f100000 0 0x200000>, // GICR
<0x0 0x2c000000 0 0x2000>, // GICC
<0x0 0x2c010000 0 0x2000>, // GICH
<0x0 0x2c020000 0 0x2000>; // GICV
interrupts = <1 9 4>;
msi-controller;
mbi-ranges = <256 128>;
gic-its@2c200000 {
compatible = "arm,gic-v3-its";
msi-controller;
#msi-cells = <1>;
reg = <0x0 0x2c200000 0 0x20000>;
};
};
gic: interrupt-controller@2c010000 {
compatible = "arm,gic-v3";
#interrupt-cells = <4>;
#address-cells = <2>;
#size-cells = <2>;
ranges;
interrupt-controller;
redistributor-stride = <0x0 0x40000>; // 256kB stride
#redistributor-regions = <2>;
reg = <0x0 0x2c010000 0 0x10000>, // GICD
<0x0 0x2d000000 0 0x800000>, // GICR 1: CPUs 0-31
<0x0 0x2e000000 0 0x800000>; // GICR 2: CPUs 32-63
<0x0 0x2c040000 0 0x2000>, // GICC
<0x0 0x2c060000 0 0x2000>, // GICH
<0x0 0x2c080000 0 0x2000>; // GICV
interrupts = <1 9 4>;
gic-its@2c200000 {
compatible = "arm,gic-v3-its";
msi-controller;
#msi-cells = <1>;
reg = <0x0 0x2c200000 0 0x20000>;
};
gic-its@2c400000 {
compatible = "arm,gic-v3-its";
msi-controller;
#msi-cells = <1>;
reg = <0x0 0x2c400000 0 0x20000>;
};
ppi-partitions {
part0: interrupt-partition-0 {
affinity = <&cpu0 &cpu2>;
};
part1: interrupt-partition-1 {
affinity = <&cpu1 &cpu3>;
};
};
};
device@0 {
reg = <0 0 0 4>;
interrupts = <1 1 4 &part0>;
};

279
Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml Normal file
View File

@ -0,0 +1,279 @@
# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/interrupt-controller/arm,gic-v3.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ARM Generic Interrupt Controller, version 3
maintainers:
- Marc Zyngier <marc.zyngier@arm.com>
description: |
AArch64 SMP cores are often associated with a GICv3, providing Private
Peripheral Interrupts (PPI), Shared Peripheral Interrupts (SPI),
Software Generated Interrupts (SGI), and Locality-specific Peripheral
Interrupts (LPI).
allOf:
- $ref: /schemas/interrupt-controller.yaml#
properties:
compatible:
oneOf:
- items:
- enum:
- qcom,msm8996-gic-v3
- const: arm,gic-v3
- const: arm,gic-v3
interrupt-controller: true
"#address-cells":
enum: [ 0, 1, 2 ]
"#size-cells":
enum: [ 1, 2 ]
ranges: true
"#interrupt-cells":
description: |
Specifies the number of cells needed to encode an interrupt source.
Must be a single cell with a value of at least 3.
If the system requires describing PPI affinity, then the value must
be at least 4.
The 1st cell is the interrupt type; 0 for SPI interrupts, 1 for PPI
interrupts. Other values are reserved for future use.
The 2nd cell contains the interrupt number for the interrupt type.
SPI interrupts are in the range [0-987]. PPI interrupts are in the
range [0-15].
The 3rd cell is the flags, encoded as follows:
bits[3:0] trigger type and level flags.
1 = edge triggered
4 = level triggered
The 4th cell is a phandle to a node describing a set of CPUs this
interrupt is affine to. The interrupt must be a PPI, and the node
pointed must be a subnode of the "ppi-partitions" subnode. For
interrupt types other than PPI or PPIs that are not partitionned,
this cell must be zero. See the "ppi-partitions" node description
below.
Cells 5 and beyond are reserved for future use and must have a value
of 0 if present.
enum: [ 3, 4 ]
reg:
description: |
Specifies base physical address(s) and size of the GIC
registers, in the following order:
- GIC Distributor interface (GICD)
- GIC Redistributors (GICR), one range per redistributor region
- GIC CPU interface (GICC)
- GIC Hypervisor interface (GICH)
- GIC Virtual CPU interface (GICV)
GICC, GICH and GICV are optional.
minItems: 2
maxItems: 4096 # Should be enough?
interrupts:
description:
Interrupt source of the VGIC maintenance interrupt.
maxItems: 1
redistributor-stride:
description:
If using padding pages, specifies the stride of consecutive
redistributors. Must be a multiple of 64kB.
allOf:
- $ref: /schemas/types.yaml#/definitions/uint64
- multipleOf: 0x10000
exclusiveMinimum: 0
"#redistributor-regions":
description:
The number of independent contiguous regions occupied by the
redistributors. Required if more than one such region is present.
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
- maximum: 4096 # Should be enough?
msi-controller:
description:
Only present if the Message Based Interrupt functionnality is
being exposed by the HW, and the mbi-ranges property present.
mbi-ranges:
description:
A list of pairs <intid span>, where "intid" is the first SPI of a range
that can be used an MBI, and "span" the size of that range. Multiple
ranges can be provided.
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32-matrix
- items:
minItems: 2
maxItems: 2
mbi-alias:
description:
Address property. Base address of an alias of the GICD region containing
only the {SET,CLR}SPI registers to be used if isolation is required,
and if supported by the HW.
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32-array
- items:
minItems: 1
maxItems: 2
ppi-partitions:
type: object
description:
PPI affinity can be expressed as a single "ppi-partitions" node,
containing a set of sub-nodes.
patternProperties:
"^interrupt-partition-[0-9]+$":
properties:
affinity:
$ref: /schemas/types.yaml#/definitions/phandle-array
description:
Should be a list of phandles to CPU nodes (as described in
Documentation/devicetree/bindings/arm/cpus.yaml).
required:
- affinity
dependencies:
mbi-ranges: [ msi-controller ]
msi-controller: [ mbi-ranges ]
required:
- compatible
- interrupts
- reg
patternProperties:
"^gic-its@": false
"^interrupt-controller@[0-9a-f]+$": false
# msi-controller is preferred, but allow other names
"^(msi-controller|gic-its|interrupt-controller)@[0-9a-f]+$":
type: object
description:
GICv3 has one or more Interrupt Translation Services (ITS) that are
used to route Message Signalled Interrupts (MSI) to the CPUs.
properties:
compatible:
const: arm,gic-v3-its
msi-controller: true
"#msi-cells":
description:
The single msi-cell is the DeviceID of the device which will generate
the MSI.
const: 1
reg:
description:
Specifies the base physical address and size of the ITS registers.
maxItems: 1
socionext,synquacer-pre-its:
description:
(u32, u32) tuple describing the untranslated
address and size of the pre-ITS window.
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32-array
- items:
minItems: 2
maxItems: 2
required:
- compatible
- msi-controller
- "#msi-cells"
- reg
additionalProperties: false
additionalProperties: false
examples:
- |
gic: interrupt-controller@2cf00000 {
compatible = "arm,gic-v3";
#interrupt-cells = <3>;
#address-cells = <1>;
#size-cells = <1>;
ranges;
interrupt-controller;
reg = <0x2f000000 0x10000>, // GICD
<0x2f100000 0x200000>, // GICR
<0x2c000000 0x2000>, // GICC
<0x2c010000 0x2000>, // GICH
<0x2c020000 0x2000>; // GICV
interrupts = <1 9 4>;
msi-controller;
mbi-ranges = <256 128>;
msi-controller@2c200000 {
compatible = "arm,gic-v3-its";
msi-controller;
#msi-cells = <1>;
reg = <0x2c200000 0x20000>;
};
};
interrupt-controller@2c010000 {
compatible = "arm,gic-v3";
#interrupt-cells = <4>;
#address-cells = <1>;
#size-cells = <1>;
ranges;
interrupt-controller;
redistributor-stride = <0x0 0x40000>; // 256kB stride
#redistributor-regions = <2>;
reg = <0x2c010000 0x10000>, // GICD
<0x2d000000 0x800000>, // GICR 1: CPUs 0-31
<0x2e000000 0x800000>, // GICR 2: CPUs 32-63
<0x2c040000 0x2000>, // GICC
<0x2c060000 0x2000>, // GICH
<0x2c080000 0x2000>; // GICV
interrupts = <1 9 4>;
msi-controller@2c200000 {
compatible = "arm,gic-v3-its";
msi-controller;
#msi-cells = <1>;
reg = <0x2c200000 0x20000>;
};
msi-controller@2c400000 {
compatible = "arm,gic-v3-its";
msi-controller;
#msi-cells = <1>;
reg = <0x2c400000 0x20000>;
};
ppi-partitions {
part0: interrupt-partition-0 {
affinity = <&cpu0 &cpu2>;
};
part1: interrupt-partition-1 {
affinity = <&cpu1 &cpu3>;
};
};
};
device@0 {
reg = <0 4>;
interrupts = <1 1 4 &part0>;
};
...

171
Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt
View File

@ -1,171 +0,0 @@
* ARM Generic Interrupt Controller
ARM SMP cores are often associated with a GIC, providing per processor
interrupts (PPI), shared processor interrupts (SPI) and software
generated interrupts (SGI).
Primary GIC is attached directly to the CPU and typically has PPIs and SGIs.
Secondary GICs are cascaded into the upward interrupt controller and do not
have PPIs or SGIs.
Main node required properties:
- compatible : should be one of:
"arm,arm1176jzf-devchip-gic"
"arm,arm11mp-gic"
"arm,cortex-a15-gic"
"arm,cortex-a7-gic"
"arm,cortex-a9-gic"
"arm,eb11mp-gic"
"arm,gic-400"
"arm,pl390"
"arm,tc11mp-gic"
"brcm,brahma-b15-gic"
"nvidia,tegra210-agic"
"qcom,msm-8660-qgic"
"qcom,msm-qgic2"
- interrupt-controller : Identifies the node as an interrupt controller
- #interrupt-cells : Specifies the number of cells needed to encode an
interrupt source. The type shall be a <u32> and the value shall be 3.
The 1st cell is the interrupt type; 0 for SPI interrupts, 1 for PPI
interrupts.
The 2nd cell contains the interrupt number for the interrupt type.
SPI interrupts are in the range [0-987]. PPI interrupts are in the
range [0-15].
The 3rd cell is the flags, encoded as follows:
bits[3:0] trigger type and level flags.
1 = low-to-high edge triggered
2 = high-to-low edge triggered (invalid for SPIs)
4 = active high level-sensitive
8 = active low level-sensitive (invalid for SPIs).
bits[15:8] PPI interrupt cpu mask. Each bit corresponds to each of
the 8 possible cpus attached to the GIC. A bit set to '1' indicated
the interrupt is wired to that CPU. Only valid for PPI interrupts.
Also note that the configurability of PPI interrupts is IMPLEMENTATION
DEFINED and as such not guaranteed to be present (most SoC available
in 2014 seem to ignore the setting of this flag and use the hardware
default value).
- reg : Specifies base physical address(s) and size of the GIC registers. The
first region is the GIC distributor register base and size. The 2nd region is
the GIC cpu interface register base and size.
Optional
- interrupts : Interrupt source of the parent interrupt controller on
secondary GICs, or VGIC maintenance interrupt on primary GIC (see
below).
- cpu-offset : per-cpu offset within the distributor and cpu interface
regions, used when the GIC doesn't have banked registers. The offset is
cpu-offset * cpu-nr.
- clocks : List of phandle and clock-specific pairs, one for each entry
in clock-names.
- clock-names : List of names for the GIC clock input(s). Valid clock names
depend on the GIC variant:
"ic_clk" (for "arm,arm11mp-gic")
"PERIPHCLKEN" (for "arm,cortex-a15-gic")
"PERIPHCLK", "PERIPHCLKEN" (for "arm,cortex-a9-gic")
"clk" (for "arm,gic-400" and "nvidia,tegra210")
"gclk" (for "arm,pl390")
- power-domains : A phandle and PM domain specifier as defined by bindings of
the power controller specified by phandle, used when the GIC
is part of a Power or Clock Domain.
Example:
intc: interrupt-controller@fff11000 {
compatible = "arm,cortex-a9-gic";
#interrupt-cells = <3>;
#address-cells = <1>;
interrupt-controller;
reg = <0xfff11000 0x1000>,
<0xfff10100 0x100>;
};
* GIC virtualization extensions (VGIC)
For ARM cores that support the virtualization extensions, additional
properties must be described (they only exist if the GIC is the
primary interrupt controller).
Required properties:
- reg : Additional regions specifying the base physical address and
size of the VGIC registers. The first additional region is the GIC
virtual interface control register base and size. The 2nd additional
region is the GIC virtual cpu interface register base and size.
- interrupts : VGIC maintenance interrupt.
Example:
interrupt-controller@2c001000 {
compatible = "arm,cortex-a15-gic";
#interrupt-cells = <3>;
interrupt-controller;
reg = <0x2c001000 0x1000>,
<0x2c002000 0x2000>,
<0x2c004000 0x2000>,
<0x2c006000 0x2000>;
interrupts = <1 9 0xf04>;
};
* GICv2m extension for MSI/MSI-x support (Optional)
Certain revisions of GIC-400 supports MSI/MSI-x via V2M register frame(s).
This is enabled by specifying v2m sub-node(s).
Required properties:
- compatible : The value here should contain "arm,gic-v2m-frame".
- msi-controller : Identifies the node as an MSI controller.
- reg : GICv2m MSI interface register base and size
Optional properties:
- arm,msi-base-spi : When the MSI_TYPER register contains an incorrect
value, this property should contain the SPI base of
the MSI frame, overriding the HW value.
- arm,msi-num-spis : When the MSI_TYPER register contains an incorrect
value, this property should contain the number of
SPIs assigned to the frame, overriding the HW value.
Example:
interrupt-controller@e1101000 {
compatible = "arm,gic-400";
#interrupt-cells = <3>;
#address-cells = <2>;
#size-cells = <2>;
interrupt-controller;
interrupts = <1 8 0xf04>;
ranges = <0 0 0 0xe1100000 0 0x100000>;
reg = <0x0 0xe1110000 0 0x01000>,
<0x0 0xe112f000 0 0x02000>,
<0x0 0xe1140000 0 0x10000>,
<0x0 0xe1160000 0 0x10000>;
v2m0: v2m@8000 {
compatible = "arm,gic-v2m-frame";
msi-controller;
reg = <0x0 0x80000 0 0x1000>;
};
....
v2mN: v2m@9000 {
compatible = "arm,gic-v2m-frame";
msi-controller;
reg = <0x0 0x90000 0 0x1000>;
};
};

223
Documentation/devicetree/bindings/interrupt-controller/arm,gic.yaml Normal file
View File

@ -0,0 +1,223 @@
# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/interrupt-controller/arm,gic.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ARM Generic Interrupt Controller v1 and v2
maintainers:
- Marc Zyngier <marc.zyngier@arm.com>
description: |+
ARM SMP cores are often associated with a GIC, providing per processor
interrupts (PPI), shared processor interrupts (SPI) and software
generated interrupts (SGI).
Primary GIC is attached directly to the CPU and typically has PPIs and SGIs.
Secondary GICs are cascaded into the upward interrupt controller and do not
have PPIs or SGIs.
allOf:
- $ref: /schemas/interrupt-controller.yaml#
properties:
compatible:
oneOf:
- items:
- enum:
- arm,arm11mp-gic
- arm,cortex-a15-gic
- arm,cortex-a7-gic
- arm,cortex-a5-gic
- arm,cortex-a9-gic
- arm,eb11mp-gic
- arm,gic-400
- arm,pl390
- arm,tc11mp-gic
- nvidia,tegra210-agic
- qcom,msm-8660-qgic
- qcom,msm-qgic2
- items:
- const: arm,arm1176jzf-devchip-gic
- const: arm,arm11mp-gic
- items:
- const: brcm,brahma-b15-gic
- const: arm,cortex-a15-gic
interrupt-controller: true
"#address-cells":
enum: [ 0, 1 ]
"#size-cells":
const: 1
"#interrupt-cells":
const: 3
description: |
The 1st cell is the interrupt type; 0 for SPI interrupts, 1 for PPI
interrupts.
The 2nd cell contains the interrupt number for the interrupt type.
SPI interrupts are in the range [0-987]. PPI interrupts are in the
range [0-15].
The 3rd cell is the flags, encoded as follows:
bits[3:0] trigger type and level flags.
1 = low-to-high edge triggered
2 = high-to-low edge triggered (invalid for SPIs)
4 = active high level-sensitive
8 = active low level-sensitive (invalid for SPIs).
bits[15:8] PPI interrupt cpu mask. Each bit corresponds to each of
the 8 possible cpus attached to the GIC. A bit set to '1' indicated
the interrupt is wired to that CPU. Only valid for PPI interrupts.
Also note that the configurability of PPI interrupts is IMPLEMENTATION
DEFINED and as such not guaranteed to be present (most SoC available
in 2014 seem to ignore the setting of this flag and use the hardware
default value).
reg:
description: |
Specifies base physical address(s) and size of the GIC registers. The
first region is the GIC distributor register base and size. The 2nd region
is the GIC cpu interface register base and size.
For GICv2 with virtualization extensions, additional regions are
required for specifying the base physical address and size of the VGIC
registers. The first additional region is the GIC virtual interface
control register base and size. The 2nd additional region is the GIC
virtual cpu interface register base and size.
minItems: 2
maxItems: 4
interrupts:
description: Interrupt source of the parent interrupt controller on
secondary GICs, or VGIC maintenance interrupt on primary GIC (see
below).
maxItems: 1
cpu-offset:
description: per-cpu offset within the distributor and cpu interface
regions, used when the GIC doesn't have banked registers. The offset
is cpu-offset * cpu-nr.
$ref: /schemas/types.yaml#/definitions/uint32
clocks:
minItems: 1
maxItems: 2
clock-names:
description: List of names for the GIC clock input(s). Valid clock names
depend on the GIC variant.
oneOf:
- const: ic_clk # for "arm,arm11mp-gic"
- const: PERIPHCLKEN # for "arm,cortex-a15-gic"
- items: # for "arm,cortex-a9-gic"
- const: PERIPHCLK
- const: PERIPHCLKEN
- const: clk # for "arm,gic-400" and "nvidia,tegra210"
- const: gclk #for "arm,pl390"
power-domains:
maxItems: 1
required:
- compatible
- reg
patternProperties:
"^v2m@[0-9a-f]+$":
description: |
* GICv2m extension for MSI/MSI-x support (Optional)
Certain revisions of GIC-400 supports MSI/MSI-x via V2M register frame(s).
This is enabled by specifying v2m sub-node(s).
properties:
compatible:
const: arm,gic-v2m-frame
msi-controller: true
reg:
maxItems: 1
description: GICv2m MSI interface register base and size
arm,msi-base-spi:
description: When the MSI_TYPER register contains an incorrect value,
this property should contain the SPI base of the MSI frame, overriding
the HW value.
$ref: /schemas/types.yaml#/definitions/uint32
arm,msi-num-spis:
description: When the MSI_TYPER register contains an incorrect value,
this property should contain the number of SPIs assigned to the
frame, overriding the HW value.
$ref: /schemas/types.yaml#/definitions/uint32
required:
- compatible
- msi-controller
- reg
additionalProperties: false
additionalProperties: false
examples:
- |
// GICv1
intc: interrupt-controller@fff11000 {
compatible = "arm,cortex-a9-gic";
#interrupt-cells = <3>;
#address-cells = <1>;
interrupt-controller;
reg = <0xfff11000 0x1000>,
<0xfff10100 0x100>;
};
- |
// GICv2
interrupt-controller@2c001000 {
compatible = "arm,cortex-a15-gic";
#interrupt-cells = <3>;
interrupt-controller;
reg = <0x2c001000 0x1000>,
<0x2c002000 0x2000>,
<0x2c004000 0x2000>,
<0x2c006000 0x2000>;
interrupts = <1 9 0xf04>;
};
- |
// GICv2m extension for MSI/MSI-x support
interrupt-controller@e1101000 {
compatible = "arm,gic-400";
#interrupt-cells = <3>;
#address-cells = <2>;
#size-cells = <2>;
interrupt-controller;
interrupts = <1 8 0xf04>;
ranges = <0 0 0 0xe1100000 0 0x100000>;
reg = <0x0 0xe1110000 0 0x01000>,
<0x0 0xe112f000 0 0x02000>,
<0x0 0xe1140000 0 0x10000>,
<0x0 0xe1160000 0 0x10000>;
v2m0: v2m@8000 {
compatible = "arm,gic-v2m-frame";
msi-controller;
reg = <0x0 0x80000 0 0x1000>;
};
//...
v2mN: v2m@9000 {
compatible = "arm,gic-v2m-frame";
msi-controller;
reg = <0x0 0x90000 0 0x1000>;
};
};
...

2
Documentation/devicetree/bindings/vendor-prefixes.txt
View File

@ -140,6 +140,7 @@ fairphone Fairphone B.V.
faraday Faraday Technology Corporation
fastrax Fastrax Oy
fcs Fairchild Semiconductor
feiyang Shenzhen Fly Young Technology Co.,LTD.
firefly Firefly
focaltech FocalTech Systems Co.,Ltd
friendlyarm Guangzhou FriendlyARM Computer Tech Co., Ltd
@ -400,6 +401,7 @@ tcl Toby Churchill Ltd.
technexion TechNexion
technologic Technologic Systems
tempo Tempo Semiconductor
techstar Shenzhen Techstar Electronics Co., Ltd.
terasic Terasic Inc.
thine THine Electronics, Inc.
ti Texas Instruments

7
drivers/media/platform/s5p-mfc/s5p_mfc.c
View File

@ -1093,6 +1093,13 @@ static struct device *s5p_mfc_alloc_memdev(struct device *dev,
child->dma_mask = dev->dma_mask;
child->release = s5p_mfc_memdev_release;
/*
* The memdevs are not proper OF platform devices, so in order for them
* to be treated as valid DMA masters we need a bit of a hack to force
* them to inherit the MFC node's DMA configuration.
*/
of_dma_configure(child, dev->of_node, true);
if (device_add(child) == 0) {
ret = of_reserved_mem_device_init_by_idx(child, dev->of_node,
idx);

6
drivers/of/of_reserved_mem.c
View File

@ -26,7 +26,7 @@
static struct reserved_mem reserved_mem[MAX_RESERVED_REGIONS];
static int reserved_mem_count;
int __init __weak early_init_dt_alloc_reserved_memory_arch(phys_addr_t size,
static int __init early_init_dt_alloc_reserved_memory_arch(phys_addr_t size,
phys_addr_t align, phys_addr_t start, phys_addr_t end, bool nomap,
phys_addr_t *res_base)
{
@ -340,10 +340,6 @@ int of_reserved_mem_device_init_by_idx(struct device *dev,
mutex_lock(&of_rmem_assigned_device_mutex);
list_add(&rd->list, &of_rmem_assigned_device_list);
mutex_unlock(&of_rmem_assigned_device_mutex);
/* ensure that dma_ops is set for virtual devices
* using reserved memory
*/
of_dma_configure(dev, np, true);
dev_info(dev, "assigned reserved memory node %s\n", rmem->name);
} else {

15
drivers/of/unittest.c
View File

@ -1116,15 +1116,22 @@ static void update_node_properties(struct device_node *np,
for (prop = np->properties; prop != NULL; prop = save_next) {
save_next = prop->next;
ret = of_add_property(dup, prop);
if (ret)
if (ret) {
if (ret == -EEXIST && !strcmp(prop->name, "name"))
continue;
pr_err("unittest internal error: unable to add testdata property %pOF/%s",
np, prop->name);
}
}
}
/**
* attach_node_and_children - attaches nodes
* and its children to live tree
* and its children to live tree.
* CAUTION: misleading function name - if node @np already exists in
* the live tree then children of @np are *not* attached to the live
* tree. This works for the current test devicetree nodes because such
* nodes do not have child nodes.
*
* @np: Node to attach to live tree
*/
@ -2514,6 +2521,10 @@ static int __init of_unittest(void)
int res;
/* adding data for unittest */
if (IS_ENABLED(CONFIG_UML))
unittest_unflatten_overlay_base();
res = unittest_data_add();
if (res)
return res;

7
include/linux/of_reserved_mem.h
View File

@ -35,13 +35,6 @@ int of_reserved_mem_device_init_by_idx(struct device *dev,
struct device_node *np, int idx);
void of_reserved_mem_device_release(struct device *dev);
int early_init_dt_alloc_reserved_memory_arch(phys_addr_t size,
phys_addr_t align,
phys_addr_t start,
phys_addr_t end,
bool nomap,
phys_addr_t *res_base);
void fdt_init_reserved_mem(void);
void fdt_reserved_mem_save_node(unsigned long node, const char *uname,
phys_addr_t base, phys_addr_t size);

13
scripts/dtc/dtx_diff
View File

@ -21,6 +21,7 @@ Usage:
diff DTx_1 and DTx_2
--annotate synonym for -T
-f print full dts in diff (--unified=99999)
-h synonym for --help
-help synonym for --help
@ -28,6 +29,7 @@ Usage:
-s SRCTREE linux kernel source tree is at path SRCTREE
(default is current directory)
-S linux kernel source tree is at root of current git repo
-T Annotate output .dts with input source file and line (-T -T for more details)
-u unsorted, do not sort DTx
@ -174,6 +176,7 @@ compile_to_dts() {
# ----- start of script
annotate=""
cmd_diff=0
diff_flags="-u"
dtx_file_1=""
@ -208,6 +211,14 @@ while [ $# -gt 0 ] ; do
shift
;;
-T | --annotate )
if [ "${annotate}" = "" ] ; then
annotate="-T"
elif [ "${annotate}" = "-T" ] ; then
annotate="-T -T"
fi
shift
;;
-u )
dtc_sort=""
shift
@ -327,7 +338,7 @@ cpp_flags="\
DTC="\
${DTC} \
-i ${srctree}/scripts/dtc/include-prefixes \
-O dts -qq -f ${dtc_sort} -o -"
-O dts -qq -f ${dtc_sort} ${annotate} -o -"
# ----- do the diff or decompile