arm: mach-k3: sysfw-loader: Add support to download SYSFW via DFU
Add support to download SYSFW into internal RAM via DFU in DFU boot
mode. Prepare a DFU config entity entry dynamically using buffer address
allocated for SYSFW and start DFU gadget to get SYSFW.
arm: mach-k3: j721e: Rename BOOT_DEVICE_USB to BOOT_DEVICE_DFU
J721e does not support USB Host MSC boot, but only supports DFU boot.
Since BOOT_DEVICE_USB is often used for host boot mode and
BOOT_DEVICE_DFU is used for DFU boot, rename BOOT_DEVICE_USB macro to
BOOT_DEVICE_DFU
The current environment offset overlaps with the sysfw area and whenever
environment is saved in the redundant slot, it overwrites sysfw.itb. Fix
the offset to prevent this.
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Sam Protsenko [Fri, 24 Jan 2020 15:53:48 +0000 (17:53 +0200)]
env: ti: boot: Boot Android with dynamic partitions
Changes:
- use boot.img instead of boot_fit.img
- use .dtb from boot.img v2
- implement recovery boot
- always boot ramdisk from boot.img, we can't mount system as root
now, as system is a logical partition inside of super partition
- don't add "skip_initramfs" to cmdline anymore
- to boot into recovery, use boot image from recovery partition
- prepare partition table:
- A/B scheme
- use 'super' partition instead of 'system' and 'vendor'
- add dtbo partitions
- introduce metadata partition
Not implemented: reading and applying dtbo blobs from dtbo partition.
Signed-off-by: Sam Protsenko <joe.skb7@gmail.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Sam Protsenko [Fri, 24 Jan 2020 15:53:44 +0000 (17:53 +0200)]
doc: android: Convert to Sphinx format
Convert Android documentation from regular txt format to Sphinx (RST).
Also add Android index.rst file and reference it in root index.rst, so
that Android documentation is visible.
Test:
$ make htmldocs
$ xdg-open doc/output/index.html
Signed-off-by: Sam Protsenko <joe.skb7@gmail.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Sam Protsenko [Fri, 24 Jan 2020 15:53:42 +0000 (17:53 +0200)]
cmd: abootimg: Add abootimg command
This command can be used to extract fields and image payloads from
Android Boot Image. It can be used for example to implement boot flow
where dtb is taken from boot.img (as v2 incorporated dtb inside of
boot.img). Using this command, one can obtain needed dtb blob from
boot.img in scripting manner, and then apply needed dtbo's (from "dtbo"
partition) on top of that, providing then the resulting image to bootm
command in order to boot the Android.
Also right now this command has the sub-command to get an address and
size of recovery dtbo from recovery image (for non-A/B devices only,
see [1,2] for details).
It can be tested like this:
=> mmc dev 1
=> part start mmc 1 boot_a boot_start
=> part size mmc 1 boot_a boot_size
=> mmc read $loadaddr $boot_start $boot_size
=> abootimg get ver
=> abootimg dump dtb
Sam Protsenko [Fri, 24 Jan 2020 15:53:41 +0000 (17:53 +0200)]
image: android: Add routine to get dtbo params
Android Boot Image v1 adds "Recovery DTB" field in image header and
associate payload in boot image itself [1]. Payload should be in
Android DTB/DTBO format [2]. That "Recovery DTB" area should be only
populated for non-A/B devices, and only in recovery image.
Add function to get an address and size of that payload. That function
can be further used e.g. in 'abootimg' command to provide the user a way
to get the address of recovery dtbo from U-Boot shell, which can be
further parsed using 'adtimg' command.
Sam Protsenko [Fri, 24 Jan 2020 15:53:40 +0000 (17:53 +0200)]
image: android: Add functions for handling dtb field
Android Boot Image v2 adds "DTB" payload (and corresponding field in the
image header). Provide functions for its handling:
- android_image_get_dtb_by_index(): Obtain DTB blob from "DTB" part of
boot image, by blob's index
- android_image_print_dtb_contents(): Iterate over all DTB blobs in
"DTB" part of boot image and print those blobs info
"DTB" payload might be in one of the following formats:
1. concatenated DTB blobs
2. Android DTBO format
The latter requires "android-image-dt.c" functionality, so this commit
selects that file for building for CONFIG_ANDROID_BOOT_IMAGE option.
Right now this new functionality isn't used, but it can be used further.
As it's required to apply some specific dtbo blob(s) from "dtbo"
partition, we can't automate this process inside of "bootm" command. But
we can do next:
- come up with some new command like "abootimg" to extract dtb blob
from boot image (using functions from this patch)
- extract desired dtbo blobs from "dtbo" partition using "adtimg"
command
- merge dtbo blobs into dtb blob using "fdt apply" command
- pass resulting dtb blob into bootm command in order to boot the
Android kernel with Android ramdisk from boot image
Signed-off-by: Sam Protsenko <joe.skb7@gmail.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Tom Rini [Fri, 31 Jan 2020 18:26:28 +0000 (13:26 -0500)]
Merge tag 'uniphier-v2020.04-2' of https://gitlab.denx.de/u-boot/custodians/u-boot-uniphier
UniPhier SoC updates for v2020.04 (2nd)
Denali NAND driver changes:
- Set up more registers in denali-spl for SOCFPGA
- Make clocks optional
- Do not assert reset signals in the remove hook
- associate SPARE_AREA_SKIP_BYTES with DT compatible
- switch to UCLASS_MTD
UniPhier platform changes:
- fix a bug in dram_init()
- specify loadaddr for "source" command
Masahiro Yamada [Wed, 29 Jan 2020 15:55:54 +0000 (00:55 +0900)]
mtd: rawnand: denali_dt: insert udelay() after reset deassert
When the reset signal is de-asserted, the HW-controlled bootstrap
starts running unless it is disabled in the SoC integration.
It issues some commands to detect a NAND chip, and sets up registers
automatically. Until this process finishes, software should avoid
any register access.
Without this delay function, some of UniPhier boards hangs up while
executing nand_scan_ident(). (denali_read_byte() is blocked)
Marek Vasut [Tue, 21 Jan 2020 19:03:11 +0000 (20:03 +0100)]
mtd: rawnand: denali: Do not reset the block before booting the kernel
The Denali NAND driver in mainline Linux currently cannot deassert the
reset. The upcoming Linux 5.6 will support the reset controlling, and
also set up SPARE_AREA_SKIP_BYTES correctly. So, the Denali driver in
the future kernel will work without relying on any bootloader or firmware.
However, we still need to take care of stable kernel versions for a while.
U-boot should not assert the reset of this controller.
Masahiro Yamada [Tue, 21 Jan 2020 19:03:10 +0000 (20:03 +0100)]
mtd: rawnand: denali_dt: make the core clock optional
The "nand_x" and "ecc" clocks are currently optional. Make the core
clock optional in the same way. This will allow platforms with no clock
driver support to use this driver.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Tested-by: Marek Vasut <marex@denx.de> # On SoCFPGA Arria V
Marek Vasut [Tue, 21 Jan 2020 19:03:09 +0000 (20:03 +0100)]
mtd: rawnand: denali-spl: Add missing hardware init on SoCFPGA
On Altera SoCFPGA, upon either cold-boot or power-on reset, the
Denali NAND IP is initialized by the BootROM ; upon warm-reset,
the Denali NAND IP is NOT initialized by BootROM. In fact, upon
warm-reset, the SoCFPGA BootROM checks whether the SPL image in
on-chip RAM is valid and if so, completely skips re-loading the
SPL from the boot media.
This does sometimes lead to problems where the software left
the boot media in inconsistent state before warm-reset, and
because the BootROM does not reset the boot media, the boot
media is left in this inconsistent state, often until another
component attempts to access the boot media and fails with an
difficult to debug failure. To mitigate this problem, the SPL
on Altera SoCFPGA always resets all the IPs on the SoC early
on boot.
This results in a couple of register values, pre-programmed by
the BootROM, to be lost during this reset. To restore correct
operation of the IP on SoCFPGA, these values must be programmed
back into the controller by the driver. Note that on other SoCs
which do not use the HW-controlled bootstrap, more registers
may have to be programmed.
This also aligns the SPL behavior with the full Denali NAND
driver, which sets these values in denali_hw_init().
Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Fabio Estevam [Wed, 29 Jan 2020 20:05:29 +0000 (17:05 -0300)]
Makefile: Fix the location of the migration file
Since commit e1910d93b890 ("doc: driver-model: Convert MIGRATION.txt to
reST") MIGRATION.txt has been converted to migration.rst, so update
the Makefile references accordingly.
Fixes: e1910d93b890 ("doc: driver-model: Convert MIGRATION.txt to reST") Signed-off-by: Fabio Estevam <festevam@gmail.com> Reviewed-by: Tom Rini <trini@konsulko.com>
In upstream libfdt, 6dcb8ba4 "libfdt: Add helpers for accessing
unaligned words" introduced changes to support unaligned reads for ARM
platforms and 11738cf01f15 "libfdt: Don't use memcpy to handle unaligned
reads on ARM" improved the performance of these helpers.
In practice however, this only occurs when the user has forced the
device tree to be placed in memory in a non-aligned way, which in turn
violates both our rules and the Linux Kernel rules for how things must
reside in memory to function.
This "in practice" part is important as handling these other cases adds
visible (1 second or more) delay to boot in what would be considered the
fast path of the code.
Cc: Patrice CHOTARD <patrice.chotard@st.com> Cc: Patrick DELAUNAY <patrick.delaunay@st.com> Link: https://www.spinics.net/lists/devicetree-compiler/msg02972.html Signed-off-by: Tom Rini <trini@konsulko.com> Tested-by: Patrice Chotard <patrice.chotard@st.com>
Coreutils command nproc can be used on Linux and BSD to count the number of
available CPU cores. Use this instead of relying on the parsing of the
Linux specific proc file system.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Tom Rini [Tue, 21 Jan 2020 16:53:38 +0000 (11:53 -0500)]
cmd/gpt: Address error cases during gpt rename more correctly
New analysis by the tool has shown that we have some cases where we
weren't handling the error exit condition correctly. When we ran into
the ENOMEM case we wouldn't exit the function and thus incorrect things
could happen. Rework the unwinding such that we don't need a helper
function now and free what we may have allocated.
Fixes: 18030d04d25d ("GPT: fix memory leaks identified by Coverity") Reported-by: Coverity (CID: 275475, 275476) Cc: Alison Chaiken <alison@she-devel.com> Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Cc: Jordy <jordy@simplyhacker.com> Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Kever Yang [Tue, 7 Jan 2020 07:15:20 +0000 (15:15 +0800)]
ram: rk3328: only do data traning for cs0
No need to do twice data training for rk3328 ddr sdram, we re-use the
setting for both channel. And adjust the sdram_init properly for correct
init flow.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com> Signed-off-by: YouMin Chen <cym@rock-chips.com>
Jagan Teki [Thu, 9 Jan 2020 18:46:22 +0000 (00:16 +0530)]
doc: boards: Add rockchip documentation
Rockchip has documentation file, doc/README.rockchip but
which is not so readable to add or understand the existing
contents. Even the format that support is legacy readme
in U-Boot.
Add rockchip specific documentation file using new rst
format, which describes the information about Rockchip
supported boards and it's usage steps.
Added minimal information about rk3288, rk3328, rk3368
and rk3399 boards and usage. This would indeed updated
further based on the requirements and updates.
Cc: Kever Yang <kever.yang@rock-chips.com> Cc: Matwey V. Kornilov <matwey.kornilov@gmail.com> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Jagan Teki [Thu, 9 Jan 2020 18:46:21 +0000 (00:16 +0530)]
rockchip: Add Single boot image (with binman, pad_cat)
All rockchip platforms support TPL or SPL-based bootloader
in mainline with U-Boot proper as final stage. For each
stage we need to burn the image on to flash with respective
offsets.
This patch creates a single boot image component using
- binman, for arm32 rockchip platforms
- pad_cat, for arm64 rockchip platforms.
This would help users to get rid of burning different
boot stage images.
The new image called 'u-boot-rockchip.bin'
which can burn into flash like:
Jagan Teki [Thu, 9 Jan 2020 18:46:16 +0000 (00:16 +0530)]
Makefile: Add rockchip image type
Add rockchip image type support. right now the image
type marked with rksd, So create image type variable
with required image type like rksd or rkspi.
Cc: Matwey V. Kornilov <matwey.kornilov@gmail.com> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Jagan Teki [Thu, 9 Jan 2020 08:52:19 +0000 (14:22 +0530)]
rockchip: rk3399: Add bootcount support
Add bootcount support for Rockchip rk3399.
The bootcount value is preserved in PMU_SYS_REG0 register,
this would help to support redundent boot.
Once the redundant boot triggers, the altboot command
will look for extlinux-rollback.conf on particular
bootable partition which supposed to be a recovery
partition where redundant boot required.
Reviewed-by: Kever Yang <kever.yang@rock-chips.com> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Jagan Teki [Thu, 9 Jan 2020 08:52:17 +0000 (14:22 +0530)]
arm: rockchip: Add common cru.h
Few of the rockchip family SoC atleast rk3288,
rk3399 are sharing some cru register bits so
adding common code between these SoC families
would require to include both cru include files
that indeed resulting function declarations error.
So, create a common cru include as cru.h then
include the rk3399 arch cru include file and move
the common cru register bit definitions into it.
The rest of rockchip cru files will add it in future.
Reviewed-by: Kever Yang <kever.yang@rock-chips.com> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Jagan Teki [Sat, 21 Dec 2019 07:54:36 +0000 (13:24 +0530)]
env: Enable SPI flash env for rockchip
Most of the SPI flash devices in rockchip are 16MiB size.
So, keeping U-Boot proper offset start from 128MiB with 1MiB
size and then start env of 8KiB would be a compatible location
between all variants of flash sizes.
This patch add env start from 0x14000 with a size of 8KiB.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Thomas Hebb [Fri, 20 Dec 2019 20:28:15 +0000 (12:28 -0800)]
ram: rk3399: don't assume phy_io_config() uses real regs
In the RK3399 DRAM driver, the function set_ds_odt() supports operating
in two different modes, selected by the ctl_phy_reg argument: when true,
the function reads and writes directly from the DRAM registers, accessed
through "chan->pctl->denali_*"; when false, the function reads and
writes from an array, accessed through "params->pctl_regs.denali_*",
which is written to DRAM registers at a later time.
However, phy_config_io(), which is called by set_ds_odt() to do a subset
of its register operations, operates directly on DRAM registers at all
times. This means that it reads incorrect values (and writes new values
prematurely) when ctl_phy_reg in set_ds_odt() is false. Fix this by
passing in the address of the registers to work with.
This prevents an "Invalid DRV value" error in the SPL debug log and
(presumably) results in a more correct end state. See the following logs
from a RK3399 NanoPi M4 board (4GB LPDDR3):
Tom Rini [Wed, 29 Jan 2020 14:34:13 +0000 (09:34 -0500)]
Merge tag 'for-v2020.04' of https://gitlab.denx.de/u-boot/custodians/u-boot-i2c
i2c changes for 2020.04
- updates the Designware I2C driver
- get timings from device tree
- handle units in nanoseconds
- make sure that the requested bus speed is not exceeded
- few smaller clean-ups
- adds enums for i2c speed and update drivers which use them
- global_data: remove unused mxc_i2c specific field
Martin Fuzzey [Tue, 14 Jan 2020 15:56:18 +0000 (15:56 +0000)]
pmic: allow dump command for non contiguous register maps
Some PMICs (such as the DA9063) have non-contiguous register maps.
Attempting to read the non implemented registers returns an error
rather than a dummy value which causes 'pmic dump' to terminate
prematurely.
Fix this by allowing the PMIC driver to return -ENODATA for such
registers, which will then be displayed as '--' by pmic dump.
Use a single error code rather than any error code so that
we can distinguish between a hardware failure reading the PMIC
and a non implemented register known to the driver.
Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group>
Martin Fuzzey [Tue, 14 Jan 2020 15:56:17 +0000 (15:56 +0000)]
power: regulator: add driver for Dialog DA9063 PMIC
Add a driver for the regulators in the the DA9063 PMIC.
Robert Beckett: move regulator modes to header so board code can set
modes. Correct mode mask used in ldo_set_mode.
Add an option CONFIG_SPL_DM_REGULATOR_DA9063.
Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group> Signed-off-by: Robert Beckett <bob.beckett@collabora.com>
Martin Fuzzey [Tue, 14 Jan 2020 15:56:16 +0000 (15:56 +0000)]
power: pmic: add driver for Dialog DA9063 PMIC
This adds the basic register access operations and child regulator
binding (if a regulator driver exists).
Robert Beckett: simplify accesses by using bottom bit of address as
offset overflow. This avoids the need to track which page we are on.
Add an option CONFIG_SPL_DM_PMIC_DA9063.
Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group> Signed-off-by: Robert Beckett <bob.beckett@collabora.com>
Ian Ray [Tue, 14 Jan 2020 16:18:20 +0000 (16:18 +0000)]
rtc: s35392a: encode command correctly
The 3-bit "command", or register, is encoded within the device address.
Configure the device accordingly, and pass command in DM I2C read/write
calls correctly.
Signed-off-by: Ian Ray <ian.ray@ge.com> Signed-off-by: Robert Beckett <bob.beckett@collabora.com>
This can be used for device tree size reduction similar as
CONFIG_OF_SPL_REMOVE_PROPS option. Some boards must pass the
built-in DTB unchanged to the kernel, thus we may not cut it
down unconditionally. Therefore enable the property removal
list option only if CONFIG_OF_DTB_PROPS_REMOVE is selected.
Marek Szyprowski [Fri, 17 Jan 2020 13:02:44 +0000 (14:02 +0100)]
arm: exynos: Read default MMC device from XOM[7:5] pins
XOM pins provide information for iROM bootloader about the boot device.
Those pins are mapped to lower bits of OP_MODE register (0x10000008),
which is common for all Exynos SoC variants. Set the default MMC device id
to reflect the boot device selected by XOM[7:5] pins (2 for the SD or 0 for
the eMMC).
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
spi: cadence-qspi: Add support for Cadence Octal SPI controller
Cadence OSPI is similar to QSPI IP except that it supports Octal IO
(8 IO lines) flashes. Add support for Cadence OSPI IP with existing
driver using new compatible
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Add support for Direct Access Controller mode of Cadence QSPI. This
allows MMIO access to SPI NOR flash providing better read performance.
Direct mode is only exercised if AHB window size is greater than 8MB.
Support for flash address remapping is also not supported at the moment
and can be added in future.
For better performance, driver uses DMA to copy data from flash in
direct mode using dma_memcpy().
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Current Cadence QSPI driver has few limitations. It assumes all read
operations to be in Quad mode and thus does not support SFDP parsing.
Also, adding support for new mode such as Octal mode would not be
possible with current configuration. Therefore move the driver over to spi-mem
framework. This has added advantage that driver can be used to support
SPI NAND memories too.
Hence, move driver over to new spi-mem APIs.
Please note that this gets rid of mode bit setting done when
CONFIG_SPL_SPI_XIP is defined as there does not seem to be any user to
that config option.
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Make sure corresponding setup registers are updated depending on CS.
This ensures that driver can support QSPI flashes on ChipSelects other
than on CS0
Reported-by: Andreas Dannenberg <dannenberg@ti.com> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Marcin Wojtas [Thu, 21 Nov 2019 04:38:47 +0000 (05:38 +0100)]
spi: prevent overriding established bus settings
The SPI stack relies on a proper bus speed/mode configuration
by calling dm_spi_claim_bus(). However the hitherto code
allowed to accidentally override those settings in
the spi_get_bus_and_cs() routine.
The initially established speed could be discarded by using
the slave platdata, which turned out to be an issue on
the platforms whose slave maximum supported frequency
is not on par with the maximum frequency of the bus controller.
This patch fixes above issue by configuring the bus from
spi_get_bus_and_cs() only in case it was not done before.
Signed-off-by: Marcin Wojtas <mw@semihalf.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Bin Meng [Mon, 9 Sep 2019 13:00:03 +0000 (06:00 -0700)]
test: dm: spi: Fix sandbox dm_test_spi_find()
Per sandbox_cs_info(), sandbox spi controller only supports chip
select 0. Current test case tries to locate devices on chip select
1, and any call to spi_get_bus_and_cs() or spi_cs_info() with cs
number 1 should not return 0.
This updates the test case to handle it correctly.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Michael Walle [Tue, 17 Dec 2019 23:09:58 +0000 (00:09 +0100)]
spi: nxp_fspi: new driver for the FlexSPI controller
This is a port of the kernel's spi-nxp-fspi driver. It uses the new
spi-mem interface and does not expose the more generic spi-xfer
interface. The source was taken from the v5.3-rc3 tag.
The port was straightforward:
- remove the interrupt handling and the completion by busy polling the
controller
- remove locks
- move the setup of the memory windows into claim_bus()
- move the setup of the speed into set_speed()
- port the device tree bindings from the original fspi_probe() to
ofdata_to_platdata()
There were only some style change fixes, no change in any logic. For
example, there are busy loops where the return code is not handled
correctly, eg. only prints a warning with WARN_ON(). This port
intentionally left most functions unchanged to ease future bugfixes.
This was tested on a custom LS1028A board. Because the LS1028A doesn't
have proper clock framework support, changing the clock speed was not
tested. This also means that it is not possible to change the SPI
speed on LS1028A for now (neither is it possible in the linux driver).
Signed-off-by: Michael Walle <michael@walle.cc> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com> Tested-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Simon Glass [Thu, 23 Jan 2020 18:48:25 +0000 (11:48 -0700)]
i2c: designware_i2c: Separate out the speed calculation
We want to be able to calculate the speed separately from actually setting
the speed, so we can generate the required ACPI tables. Split out the
calculation into its own function.
Drop the double underscore on __dw_i2c_set_bus_speed while we are here.
That is reserved for compiler internals.
Simon Glass [Thu, 23 Jan 2020 18:48:24 +0000 (11:48 -0700)]
i2c: designware_i2c: Move dw_i2c_speed_config to header
This is used to store the speed information for a bus. We want to provide
this to ACPI so that it can tell the kernel. Move this struct to the
header file so it can be accessed by the ACPI i2c implementation being
added later.
projects / u-boot.git / log