Commit Graph

5852 Commits

Author SHA1 Message Date
Shengzhou Liu
c18fc2c960 net/phy: enable serdes auto-negotiation for vsc8514 phy
VSC8514 QSGMII PHY requires enabling auto-negotiation,
otherwise it wouldn't work.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-12-05 08:06:15 -08:00
Shengzhou Liu
cc19c25e27 net/fman: update 10GEC to fit new SoC
fm_standard_init() initializes each 10G port by FM_TGEC_INFO_INITIALIZER.
but it needs different implementation of FM_TGEC_INFO_INITIALIZER on different SoCs.
on SoCs earlier(e.g. T4240, T2080), the notation between 10GEC and MAC as below:
	10GEC1->MAC9, 10GEC2->MAC10, 10GEC3->MAC1, 10GEC4->MAC2
on SoCs later(e.g. T1024, etc), the notation between 10GEC and MAC as below:
	10GEC1->MAC1, 10GEC2->MAC2

so we introduce CONFIG_FSL_FM_10GEC_REGULAR_NOTATION to fit the new SoCs on
which 10GEC enumeration is consistent with MAC enumeration.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-12-05 08:06:15 -08:00
Shengzhou Liu
f605079041 powerpc/mpc85xx: Add T1024/T1023 SoC support
Add support for Freescale T1024/T1023 SoC.

The T1024 SoC includes the following function and features:
- Two 64-bit Power architecture e5500 cores, up to 1.4GHz
- private 256KB L2 cache each core and shared 256KB CoreNet platform cache (CPC)
- 32-/64-bit DDR3L/DDR4 SDRAM memory controller with ECC and interleaving support
- Data Path Acceleration Architecture (DPAA) incorporating acceleration
- Four MAC for 1G/2.5G/10G network interfaces (RGMII, SGMII, QSGMII, XFI)
- High-speed peripheral interfaces
  - Three PCI Express 2.0 controllers
- Additional peripheral interfaces
  - One SATA 2.0 controller
  - Two USB 2.0 controllers with integrated PHY
  - Enhanced secure digital host controller (SD/eSDHC/eMMC)
  - Enhanced serial peripheral interface (eSPI)
  - Four I2C controllers
  - Four 2-pin UARTs or two 4-pin UARTs
  - Integrated Flash Controller supporting NAND and NOR flash
- Two 8-channel DMA engines
- Multicore programmable interrupt controller (PIC)
- LCD interface (DIU) with 12 bit dual data rate
- QUICC Engine block supporting TDM, HDLC, and UART
- Deep Sleep power implementaion (wakeup from GPIO/Timer/Ethernet/USB)
- Support for hardware virtualization and partitioning enforcement
- QorIQ Platform's Trust Architecture 2.0

Differences between T1024 and T1023:
  Feature         T1024  T1023
  QUICC Engine:   yes    no
  DIU:            yes    no
  Deep Sleep:     yes    no
  I2C controller: 4      3
  DDR:            64-bit 32-bit
  IFC:            32-bit 28-bit

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-12-05 08:06:14 -08:00
York Sun
789b3447c0 driver/ddr/fsl: Add workaround for faulty SPD
Some UDIMMs have faulty SPD with wrong mapping for DQ[36-39].
Using raw card spec in case this error is detected.

Signed-off-by: York Sun <yorksun@freescale.com>
2014-12-05 08:06:14 -08:00
Suresh Gupta
e2544e7a54 B4860QDS: Enable enet port as per fsl_b4860_serdes2 string in hwconfig
In B4860QDS board SerDes2 lanes EFGH either go to SFP or AMC riser card
slot2 so either DTSEC3/DTSEC4 or TGEC1/TGEC2 should be accessible. This
Patch enables DTSEC3/DTSEC4 or TGEC1/TGEC2 on bases of user specified
string fsl_b4860_serdes2:sfp_amc=amc or fsl_b4860_serdes2:sfp_amc=sfp
respectively in hwconfig.

Signed-off-by: Suresh Gupta <suresh.gupta@freescale.com>
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-12-05 08:06:14 -08:00
Shaohui Xie
89b94d851d powerpc/b4860qds: add xfi support
We need following changes to make xfi work on B4:
1. set cross-point switch VSC3308 to use sfp config when running xfi;
2. add 10G interface check for xfi;
3. set phy address for xfi so the 10G ports can be registered by mdio;

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-12-05 08:06:13 -08:00
Shengzhou Liu
9b18e5199e net/phy: Add support for CS4315/CS4340 PHY
Add support for Cortina CS4315/CS4340 10G PHY.
- This driver loads CS43xx firmware from NOR/NAND/SPI/SD device
  to initialize Cortina PHY.
- Cortina PHY has non-standard offset of PHY ID registers, thus
  we define own get_phy_id() to override default get_phy_id().
- To define macro CONFIG_PHY_CORTINA will enable this driver.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-12-05 08:06:11 -08:00
York Sun
84baed2a2b driver/ddr/fsl: Adjust timing_cfg_0 to better support two DDR slots
Increase write-to-write and read-to-read turnaround time for two-slot DDR
configurations. Previously only quad-rank and two dual-rank configurations
have this additional turnaround time. A recent test on two single-rank
DIMMs shows the shorter additional turnaround time is also needed.

Signed-off-by: York Sun <yorksun@freescale.com>
2014-12-05 08:06:11 -08:00
Joakim Tjernlund
bcb60cb9c4 Freescale t104x: Do not exclude SGMII
fman_port_enet_if() tests if FM1_DTSEC2 or FM1_DTSEC4 uses
RGMII or MII and if not returns PHY_INTERFACE_MODE_NONE.
This excludes testing for SGMII further down.

Remove the unconditional "else return PHY_INTERFACE_MODE_NONE"
so SGMII can be tested too.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-12-05 08:06:07 -08:00
Marek Vasut
b19157bf3f mtd: nand: s3c: Unify the register definition and naming
Merge struct s3c2410_nand and struct s3c2440_nand into one unified
struct s3c24x0_nand. While at it, fix up and rename the functions
to retrieve the NAND base address and fix up the s3c NAND driver to
reflect this change.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Vladimir Zapolskiy <vz@mleia.com>
2014-11-26 23:21:43 -06:00
Sanchayan Maity
2260457341 mtd/nand/vf610_nfc: Disable subpage writes
This patch disables subpage writes for vf610_nfc nand
driver. This is required, as without this fix, writing
unaligned u-boot images with DFU results in a hang.
Trying to write unalgined binary images also results
in a hang, without disabling subpage writes.

Patch has been tested on a Colibri VF61 module.

Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
2014-11-26 19:53:49 -06:00
Masahiro Yamada
f09eb52b3f mtd: denali: set some registers after nand_scan_ident()
Some but not all of implementations of the Denali NAND controller
have hardware circuits to detect the device parameters such as
page_size, erase_size, etc.  Even on those SoCs with such hardware
supported, the hardware is known to detect wrong parameters for some
nasty (almost buggy) NAND devices.  The device parameters detected
during nand_scan_ident() are more trustworthy.

This commit sets some hardware registers to mtd->pagesize,
mtd->oobsize, etc. in the code between nand_scan_ident() and
nand_scan_tail().

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Chin Liang See <clsee@altera.com>
2014-11-26 19:53:22 -06:00
Masahiro Yamada
65e4145a20 mtd: denali: use CONFIG_SYS_NAND_SELF_INIT
Some variants of the Denali NAND controller need some registers
set up based on the device information that has been detected during
nand_scan_ident().

CONFIG_SYS_NAND_SELF_INIT has to be defined to insert code between
nand_scan_ident() and nand_scan_tail().  It is also helpful to reduce
the difference between this driver and its Linux counterpart because
this driver was ported from Linux.  Moreover, doc/README.nand recommends
to use CONFIG_SYS_NAND_SELF_INIT.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Chin Liang See <clsee@altera.com>
2014-11-26 19:53:19 -06:00
Rostislav Lisovy
35c204d8a9 nand: reinstate lazy bad block scanning
Commit ff94bc40af
("mtd, ubi, ubifs: resync with Linux-3.14")
accidentally reverted part of the commit
13f0fd94e3
("NAND: Scan bad blocks lazily.").

Reinstate the change as by commit
fb49454b1b
("nand: reinstate lazy bad block scanning")

Signed-off-by: Rostislav Lisovy <lisovy@merica.cz>
Acked-by: Heiko Schocher <hs@denx.de>
2014-11-26 19:51:51 -06:00
Tom Rini
85bafb6da4 Merge branch 'master' of git://git.denx.de/u-boot-fsl-qoriq 2014-11-26 11:23:26 -05:00
Tom Rini
21008ad638 Merge branch 'master' of git://git.denx.de/u-boot-mpc85xx
Conflicts:
	drivers/mmc/fsl_esdhc.c

Signed-off-by: Tom Rini <trini@ti.com>
2014-11-26 11:22:29 -05:00
Tom Rini
878cd63e02 Merge branch 'master' of http://git.denx.de/u-boot-samsung 2014-11-26 11:21:16 -05:00
Luc Verhaegen
2d7a084ba0 sunxi: video: Add simplefb support
Add simplefb support, note this depends on the kernel having support for
the clocks property which has recently been added to the simplefb devicetree
binding.

Signed-off-by: Luc Verhaegen <libv@skynet.be>
[hdegoede@redhat.com: Use pre-populated simplefb node under /chosen as
 disussed on the devicetree list]
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>.
2014-11-25 13:38:46 +01:00
Hans de Goede
211717a463 sunxi: video: Add sun6i support
Besided needing the usual sun6i specific ahb1_reset bits poking, it turns out
that sun6i also needs the drc to be taken out of reset and clocked even though
it is in pass-through mode.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
2014-11-25 13:38:46 +01:00
Luc Verhaegen
7f2c521f90 sunxi: video: Add cfb console driver for sunxi
This adds a fixed mode hdmi driver for the sunxi platform. The fixed
mode is a relatively safe 1024x768, more complete EDID handling is
currently not provided. Only HDMI is supported today.

This code is enabled when HPD detects an attached monitor.

Current config is such that 8MB is shaved off at the top of the RAM.
This avoids several memory handling issues, most significant is the fact
that on linux on ARM you are not allowed to remap known RAM as IO. A
clued in display driver will be able to recycle this reserved RAM in
future though.

cfbconsole was chosen as it provides the most important functionality: a
working u-boot console, allowing for the debugging of certain issues
without the need for a UART.

Signed-off-by: Luc Verhaegen <libv@skynet.be>
[hdegoede@redhat.com: Major cleanups and some small bugfixes]
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2014-11-25 13:38:46 +01:00
Nikhil Badola
f3dff695e1 drivers : usb: fsl: Implement usb Erratum A007798 workaround
Set TXFIFOTHRESH to adjust ddr pipeline delay for successful large
usb writes

Signed-off-by: Nikhil Badola <nikhil.badola@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-11-24 09:27:04 -08:00
Tom Rini
dee332ffb7 Merge branch 'master' of git://www.denx.de/git/u-boot-imx 2014-11-24 12:02:12 -05:00
Tom Rini
1739564e75 Merge git://git.denx.de/u-boot-dm
Conflicts:
	drivers/serial/serial-uclass.c

Signed-off-by: Tom Rini <trini@ti.com>
2014-11-24 12:01:48 -05:00
Tom Rini
746667f1e5 Merge git://git.denx.de/u-boot-x86
Conflicts:
	arch/x86/cpu/Makefile

Signed-off-by: Tom Rini <trini@ti.com>
2014-11-24 12:00:00 -05:00
Nikita Kiryanov
10ee8ecafb sata: implement reset_sata for dwc_ahsata
Add reset_sata() to the sata driver interface and implement it
for dwc_ahsata. This function cleans up after sata_init(), and
therefore accepts a device number like sata_init() does.
A dummy implementation is provided for the rest of the drivers.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefano Babic <sbabic@denx.de>
2014-11-24 11:59:59 +01:00
Suriyan Ramasami
d455d8789d fs: API changes enabling extra parameter to return size of type loff_t
The sandbox/ext4/fat/generic fs commands do not gracefully deal with files
greater than 2GB. Negative values are returned in such cases.

To handle this, the fs functions have been modified to take an additional
parameter of type "* loff_t" which is then populated. The return value
of the fs functions are used only for error conditions.

Signed-off-by: Suriyan Ramasami <suriyan.r@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
[trini: Update board/gdsys/p1022/controlcenterd-id.c,
drivers/fpga/zynqpl.c for changes]
Signed-off-by: Tom Rini <trini@ti.com>
2014-11-23 06:49:04 -05:00
Thierry Reding
4efe52bf23 pci: Honour pci_skip_dev()
When enumerating devices, honour the pci_skip_dev() function. This can
be used by PCI controller drivers to restrict which devices will be
probed.

This is required by the NVIDIA Tegra PCIe controller driver, which will
fail with a data abort exception if an access is attempted to a device
number larger than 0 outside of bus 0. pci_skip_dev() is therefore
implemented to prevent any such accesses.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2014-11-23 06:49:01 -05:00
li pengbo
1b51d32c0f sata: fix a bug in init_sata() for pci-sata card
Except the first loop, init_sata() should return 0 instead of 1
in the others.

This patch fix the issue of the 2nd sata port not workable on pci-sata card.

Signed-off-by: Pengbo Li <Pengbo.Li@freescale.com>
2014-11-23 06:49:01 -05:00
Masahiro Yamada
b41411954d linux/kernel.h: sync min, max, min3, max3 macros with Linux
U-Boot has never cared about the type when we get max/min of two
values, but Linux Kernel does.  This commit gets min, max, min3, max3
macros synced with the kernel introducing type checks.

Many of references of those macros must be fixed to suppress warnings.
We have two options:
 - Use min, max, min3, max3 only when the arguments have the same type
   (or add casts to the arguments)
 - Use min_t/max_t instead with the appropriate type for the first
   argument

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Pavel Machek <pavel@denx.de>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
[trini: Fixup arch/blackfin/lib/string.c]
Signed-off-by: Tom Rini <trini@ti.com>
2014-11-23 06:48:30 -05:00
Masahiro Yamada
17b28edb37 dm: core: remove unnecessary return condition in uclass lookup
These conditions never happen.
 - There is no real uclass with UCLASS_INVALID id.
 - uclass never becomes NULL because ll_entry_start() always returns
   a valid pointer.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-11-22 10:16:49 +01:00
Masahiro Yamada
f724e0bba2 dm: core: remove unnecessary return condition in driver lookup
The variable "drv" never becomes NULL because ll_entry_start()
always returns a valid pointer even if there are no entries.

The case "n_ents == 0" is covered by the following "for" loop.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-11-22 10:16:49 +01:00
Masahiro Yamada
84a7153733 dm: core: remove meaningless if conditional
If the variable "ret" is equal to "-ENOENT", it is trapped at [1] and
never reaches [2].  At [3], the condition "ret != -ENOENT" is always
true.

  if (ret == -ENOENT) {                       <------------------ [1]
          continue;
  } else if (ret == -ENODEV) {
          dm_dbg("Device '%s' has no compatible string\n", name);
          break;
  } else if (ret) {                           <------------------ [2]
          dm_warn("Device tree error at offset %d\n", offset);
          if (!result || ret != -ENOENT)      <------------------ [3]
                  result = ret;
          break;
  }

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-11-22 10:16:48 +01:00
Masahiro Yamada
cbf86d7198 dm: core: a trivial clean up
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-11-22 10:16:48 +01:00
Simon Glass
d11e8fd86e cros_ec: Fix uninitialised variable in cros_ec.c
This fixes this cppcheck report:

[drivers/misc/cros_ec.c:704]: (error) Uninitialized variable: req

Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Wolfgang Denk <wd@denx.de>
2014-11-22 10:16:48 +01:00
Simon Glass
6b18656aff dm: spi: Use device_bind_driver() instead of our own function
The SPI function does the same thing, so we may as well just use the new
generic function. The 'cs' parameter was not actually used, so can be
dropped.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Acked-by: Heiko Schocher <hs@denx.de>
2014-11-22 10:16:48 +01:00
Simon Glass
ff56bba2d6 dm: spi: Correct handling of SPI chip selects in sandbox
This code was not updated when the chip select handling was adjusted. Fix
it to call the correct function.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Acked-by: Heiko Schocher <hs@denx.de>
2014-11-22 10:16:47 +01:00
Simon Glass
e33dc221f4 dm: Add a function to bind a device by driver name
In some cases we need to manually bind a device to a particular driver.
Add a function to do this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Acked-by: Heiko Schocher <hs@denx.de>
2014-11-22 10:16:47 +01:00
Simon Glass
479728cb0c dm: core: Add functions to find parent and OF data
Add dev_get_parent() as a convenience to obtain the parent of a device.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@ti.com>
Acked-by: Heiko Schocher <hs@denx.de>
2014-11-22 10:16:47 +01:00
Simon Glass
2ef249b442 dm: core: Allow access to the device's driver_id data
When the device is created from a device tree node, it matches a compatible
string. Allow access to that string and the associated data.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@ti.com>
Acked-by: Heiko Schocher <hs@denx.de>
2014-11-22 10:16:45 +01:00
Nikhil Badola
c26c80a1a4 drivers: usb: fsl: Move USB Errata checking code
Move USB Errata checking code from "arch/powerpc" to architecture independent
file "fsl_usb.h" so that errata(s) become independent of the architecture.
For each erratum checking function for PPC arch, define a nop function for
non PPC arch for successful compilation in either case

Signed-off-by: Nikhil Badola <nikhil.badola@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-11-21 09:28:28 -08:00
Ye.Li
e3568d2eca DM: thermal: Add imx thermal DM driver
Add a new thermal uclass for thermal sensor and implement the imx
thermal driver basing on this uclass.

Signed-off-by: Ye.Li <B37916@freescale.com>
Acked-by: Stefano Babic <sbabic@denx.de>
2014-11-21 15:30:01 +01:00
Simon Glass
bc0b28427a dm: tegra: Add platform data for the SPL uart
Since we currently don't have device tree available in SPL, add platform
data so the uart works.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-11-21 08:14:02 +01:00
Simon Glass
236f2bd302 dm: Allow stdio registration to be dropped
Provide a CONFIG_DM_STDIO option to enable registering a serial device
with the stdio library. This is seldom useful in SPL, so disable it by
default when building for SPL.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@ti.com>
2014-11-21 08:13:14 +01:00
Simon Glass
3ac435d33a dm: Allow device removal features to be dropped
For SPL we don't expect to need to remove a device. Save some code space
by dropping this feature. The board config can define
CONFIG_DM_DEVICE_REMOVE if this is in fact needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@ti.com>
2014-11-21 08:13:02 +01:00
Simon Glass
ad1b81c880 dm: serial: Support changing the baud rate
Implement this feature in the uclass so that the baudrate can be changed
with 'setenv baudrate <rate>'.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-11-21 08:10:16 +01:00
Simon Glass
0f65f48b64 dm: at91: Add driver model support for the serial driver
Add driver model support while retaining the existing legacy code. This
allows the driver to support boards that have converted to driver model
as well as those that have not.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-11-21 08:09:58 +01:00
Simon Glass
62137fc0ab dm: at91: Refactor serial driver slightly for driver model
Before adding driver model support, split out a few of the functions so
that they can be used by the driver model code.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Andreas Bießmann <andreas.devel@googlemail.com>
2014-11-21 08:09:55 +01:00
Simon Glass
918354b18e dm: at91: Add driver model support for atmel GPIO driver
Modify this driver to support driver model, with platform data required to
determine the GPIOs that it controls.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-11-21 08:08:19 +01:00
Simon Glass
1b4f25ff8e x86: ivybridge: Add support for early GPIO init
When not relying on Coreboot for GPIO init the GPIOs must be set up
correctly. This is currently done statically through a rather ugly method.
As the GPIOs are figured out they can be moved to the device tree and set
up as needed rather than all at the start.

In this implementation, board files should call ich_gpio_set_gpio_map()
before the GPIO driver is used in order to provide the GPIO information.
We use the early PCI interface so that this driver can now be used before
relocation.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-11-21 07:34:14 +01:00
Simon Glass
e5901c94e3 dm: gpio: Add a function to read an ID from a list of GPIOs
For board IDs a common approach is to set aside several GPIOs for use in
determining the board ID. This can provide information about board features
and the revision.

Add a function that turns a list of GPIOs into an integer by assigning
each GPIO to a single bit.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-11-21 07:24:11 +01:00