]> git.sur5r.net Git - u-boot/log
u-boot
6 years agoefi_loader: helloworld.c: Explicitly use .rodata for loaded_image_guid
Alexander Graf [Mon, 11 Dec 2017 08:40:47 +0000 (09:40 +0100)]
efi_loader: helloworld.c: Explicitly use .rodata for loaded_image_guid

Commit bbf75dd9345d0b ("efi_loader: output load options in helloworld")
introduced a const variable in efi_main() called loaded_image_guid which
got populated from a constant struct.

While you would usually expect a compiler to realize that this variable
should really just be a global pointer to .rodata, gcc disagrees and instead
puts it on the stack. Unfortunately in some implementations of gcc it does
so my calling memcpy() which we do not implement in our hello world
environment.

So let's explicitly move it to a global variable which in turn puts it in
.rodata reliably and gets rid of the memcpy().

Fixes: bbf75dd9345d0b ("efi_loader: output load options in helloworld")
Reported-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
6 years agoMerge git://git.denx.de/u-boot-dm
Tom Rini [Thu, 14 Dec 2017 20:46:07 +0000 (15:46 -0500)]
Merge git://git.denx.de/u-boot-dm

6 years agoMerge branch 'master' of git://git.denx.de/u-boot-socfpga
Tom Rini [Wed, 13 Dec 2017 22:58:46 +0000 (17:58 -0500)]
Merge branch 'master' of git://git.denx.de/u-boot-socfpga

6 years agoMerge branch 'master' of git://git.denx.de/u-boot-usb
Tom Rini [Wed, 13 Dec 2017 22:58:36 +0000 (17:58 -0500)]
Merge branch 'master' of git://git.denx.de/u-boot-usb

6 years agoMerge branch 'rmobile-mx' of git://git.denx.de/u-boot-sh
Tom Rini [Wed, 13 Dec 2017 22:58:27 +0000 (17:58 -0500)]
Merge branch 'rmobile-mx' of git://git.denx.de/u-boot-sh

6 years agoMerge git://git.denx.de/u-boot-samsung
Tom Rini [Wed, 13 Dec 2017 22:58:18 +0000 (17:58 -0500)]
Merge git://git.denx.de/u-boot-samsung

6 years agopower: pmic/regulator: Add basic support for TPS65910
Felix Brack [Thu, 30 Nov 2017 12:52:37 +0000 (13:52 +0100)]
power: pmic/regulator: Add basic support for TPS65910

Texas Instrument's TPS65910 PMIC contains 3 buck DC-DC converts, one
boost DC-DC converter and 8 LDOs. This patch implements driver model
support for the TPS65910 PMIC and its regulators making the get/set
API for regulator value/enable available.
This patch depends on the patch "am33xx: Add a function to query MPU
voltage in uV" to build correctly. For boards relying on the DT
include file tps65910.dtsi the v3 patch "power: extend prefix match
to regulator-name property" and an appropriate regulator naming is
also required.

Signed-off-by: Felix Brack <fb@ltec.ch>
Reviewed-by: Simon Glass <sjg@chromium.org>
6 years agodm: blk: Use uclass_find_first/next_device() in blk_first/next_device()
Stefan Roese [Wed, 29 Nov 2017 15:46:42 +0000 (16:46 +0100)]
dm: blk: Use uclass_find_first/next_device() in blk_first/next_device()

This patch changes the calls to uclass_first/next_device() in blk_first/
next_device() to use uclass_find_first/next_device() instead. These functions
don't prepare the devices, which is correct in this case.

With this patch applied, the "usb storage" command now works again as
expected:

=> usb storage
  Device 0: Vendor: SanDisk Rev: 1.00 Prod: Ultra
  Type: Removable Hard Disk
  Capacity: 58656.0 MB = 57.2 GB (120127488 x 512)

Without this patch, it used to generate this buggy output:

=> usb storage
Card did not respond to voltage select!
mmc_init: -95, time 26
No storage devices, perhaps not 'usb start'ed..?

Signed-off-by: Stefan Roese <sr@denx.de>
Suggested-by: Simon Glass <sjg@chromium.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
6 years agopower: extend prefix match to regulator-name property
Felix Brack [Mon, 27 Nov 2017 08:14:16 +0000 (09:14 +0100)]
power: extend prefix match to regulator-name property

This patch extends pmic_bind_children prefix matching. In addition to
the node name the property regulator-name is used while trying to match
prefixes. This allows assigning different drivers to regulator nodes
named regulator@1 and regulator@10 for example.
I have discarded the idea of using other properties then regulator-name
as I do not see any benefit in using property compatible or even
regulator-compatible. Of course I am open to change this if there are
good reasons to do so.

Signed-off-by: Felix Brack <fb@ltec.ch>
Reviewed-by: Simon Glass <sjg@chromium.org>
6 years agodm: reset: have the reset-command perform a COLD reset
Philipp Tomsich [Fri, 24 Nov 2017 17:37:58 +0000 (18:37 +0100)]
dm: reset: have the reset-command perform a COLD reset

The DM version of do_reset has been issuing a warm-reset, which (on
some platforms keeps GPIOs and other parts of the platform active).
This may cause unintended behaviour, as calling do_reset usually
indicates a desire to reset the board/platform and not just the CPU.

This changes do_reset to always request a COLD reset.
Note that programmatic uses can still invoke a WARM reset through
reset_cpu() or using sysreset_walk().

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
6 years agobinman: tegra: Convert to use binman
Simon Glass [Tue, 14 Nov 2017 01:55:06 +0000 (18:55 -0700)]
binman: tegra: Convert to use binman

Update tegra to use binman for image creation. This still includes the
current Makefile logic, but a later patch will remove this. Three output
files are created, all of which combine
SPL and U-Boot:

   u-boot-tegra.bin        - standard image
   u-boot-dtb-tegra.bin    - same as u-boot-tegra.bin
   u-boot-nodtb-target.bin - includes U-Boot without the appended device tree

The latter is useful for build systems where the device is appended later,
perhaps after being modified.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agobinman: Add documentation for the symbol feature
Simon Glass [Tue, 14 Nov 2017 01:55:05 +0000 (18:55 -0700)]
binman: Add documentation for the symbol feature

Add this feature to the README.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
6 years agobinman: Add binman support to spl_ram.c
Simon Glass [Tue, 14 Nov 2017 01:55:04 +0000 (18:55 -0700)]
binman: Add binman support to spl_ram.c

SPL supports reading U-Boot from a RAM location. At present this is
hard-coded to the U-Boot text base address. Use binman to allow this to
come from the image file, if binman is used.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agobinman: Add binman symbol support to SPL
Simon Glass [Tue, 14 Nov 2017 01:55:03 +0000 (18:55 -0700)]
binman: Add binman symbol support to SPL

Allow SPL to access binman symbols and use this to get the address of
U-Boot. This falls back to CONFIG_SYS_TEXT_BASE if the binman symbol
is not available.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agobinman: arm: Include the binman symbol table
Simon Glass [Tue, 14 Nov 2017 01:55:02 +0000 (18:55 -0700)]
binman: arm: Include the binman symbol table

This area of the image contains symbols whose values are filled in by
binman. If this feature is not used, the table is empty.

Add this to the ARM SPL link script.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agobinman: Support accessing binman tables at run time
Simon Glass [Tue, 14 Nov 2017 01:55:01 +0000 (18:55 -0700)]
binman: Support accessing binman tables at run time

Binman construct images consisting of multiple binary files. These files
sometimes need to know (at run timme) where their peers are located. For
example, SPL may want to know where U-Boot is located in the image, so
that it can jump to U-Boot correctly on boot.

In general the positions where the binaries end up after binman has
finished packing them cannot be known at compile time. One reason for
this is that binman does not know the size of the binaries until
everything is compiled, linked and converted to binaries with objcopy.

To make this work, we add a feature to binman which checks each binary
for symbol names starting with '_binman'. These are then decoded to figure
out which entry and property they refer to. Then binman writes the value
of this symbol into the appropriate binary. With this, the symbol will
have the correct value at run time.

Macros are used to make this easier to use. As an example, this declares
a symbol that will access the 'u-boot-spl' entry to find the 'pos' value
(i.e. the position of SPL in the image):

   binman_sym_declare(unsigned long, u_boot_spl, pos);

This converts to a symbol called '_binman_u_boot_spl_prop_pos' in any
binary that includes it. Binman then updates the value in that binary,
ensuring that it can be accessed at runtime with:

   ulong u_boot_pos = binman_sym(ulong, u_boot_spl, pos);

This assigns the variable u_boot_pos to the position of SPL in the image.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agobinman: Support enabling debug in tests
Simon Glass [Tue, 14 Nov 2017 01:55:00 +0000 (18:55 -0700)]
binman: Support enabling debug in tests

The elf module can provide some debugging information to assist with
figuring out what is going wrong. This is also useful in tests. Update the
-D option so that it is passed through to tests as well.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agobinman: Adjust size of test SPL binary
Simon Glass [Tue, 14 Nov 2017 01:54:59 +0000 (18:54 -0700)]
binman: Adjust size of test SPL binary

This is only 3 bytes long which is not enough to hold two symbol values,
needed to test the binman symbols feature. Increase it to 15 bytes.

Using very small regions is useful since we can easily compare them in
tests and errors are fairly easy to diagnose.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agobinman: Add tests binaries with binman symbols
Simon Glass [Tue, 14 Nov 2017 01:54:58 +0000 (18:54 -0700)]
binman: Add tests binaries with binman symbols

For testing we need to build some ELF files containing binman symbols. Add
these to the Makefile and check in the binaries:

   u_boot_binman_syms - normal, valid ELF file
   u_boot_binman_syms_bad - missing the __image_copy_start symbol
   u_boot_binman_syms_size - has a binman symbol with an invalid size

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agobinman: Drop a stale comment about the 'board' feature
Simon Glass [Tue, 14 Nov 2017 01:54:57 +0000 (18:54 -0700)]
binman: Drop a stale comment about the 'board' feature

This feature is now supported. Drop the incorrect comment.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agobinman: Add support for including spl/u-boot-spl-nodtb.bin
Simon Glass [Tue, 14 Nov 2017 01:54:56 +0000 (18:54 -0700)]
binman: Add support for including spl/u-boot-spl-nodtb.bin

This file contains SPL image without a device tree. Add support for
including this in images.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agobinman: Add support for including spl/u-boot-spl.dtb
Simon Glass [Tue, 14 Nov 2017 01:54:55 +0000 (18:54 -0700)]
binman: Add support for including spl/u-boot-spl.dtb

This file contains the SPL device tree. Add support for including this by
itself in images.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agobinman: Add a function to read ELF symbols
Simon Glass [Tue, 14 Nov 2017 01:54:54 +0000 (18:54 -0700)]
binman: Add a function to read ELF symbols

In some cases we need to read symbols from U-Boot. At present we have a
a few cases which does this via 'nm' and 'grep'.

It is better to use objdump since that tells us the size of the symbols
and also whether it is weak or not.

Add a new module which reads ELF information from files. Update existing
uses of 'nm' to use this module.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agoREADME: update the kernel coding style reference
Baruch Siach [Sun, 10 Dec 2017 15:34:35 +0000 (17:34 +0200)]
README: update the kernel coding style reference

The old CodingStyle document has been converted to ReST and moved
elsewhere. Link to the web version of this document instead.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
6 years agoARM: pxa: Remove unused ifdefs
Tuomas Tynkkynen [Sat, 9 Dec 2017 01:51:48 +0000 (03:51 +0200)]
ARM: pxa: Remove unused ifdefs

These ifdefs are protecting #include statements for files that have
never existed. AFAICT this hardware.h has been copied from the kernel
and the ifdefs have never served a role in U-Boot, so delete them.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
6 years agotest: py: Add an option to skip sleep test
Michal Simek [Fri, 8 Dec 2017 14:47:18 +0000 (15:47 +0100)]
test: py: Add an option to skip sleep test

Some QEMUs have a problem with time setup that's why
sleep test is failing. Introduce env__sleep_accurate
boardenv variable to have an option to skip sleep test.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
6 years agotest/py: gpt: update size of gpt partition
Patrick Delaunay [Wed, 6 Dec 2017 17:08:20 +0000 (18:08 +0100)]
test/py: gpt: update size of gpt partition

- avoid disturbing 0MiB partition size (in fact < 1MiB)
- test overlap limit between part1 and part2
- test gpt write with data with modifier 'M' for MiB

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
6 years agoSPL: Add FIT data-position property support
Peng Fan [Tue, 5 Dec 2017 05:20:59 +0000 (13:20 +0800)]
SPL: Add FIT data-position property support

For external data, FIT has a optional property "data-position" which
can set the external data to a fixed offset to FIT beginning.
Add the support for this property in SPL FIT.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tomas Melin <tomas.melin@vaisala.com>
Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Cc: "Andrew F. Davis" <afd@ti.com>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: "tomas.melin@vaisala.com" <tomas.melin@vaisala.com>
Cc: Kever Yang <kever.yang@rock-chips.com>
Cc: Andre Przywara <andre.przywara@arm.com>
Cc: York Sun <york.sun@nxp.com>
Cc: Lokesh Vutla <lokeshvutla@ti.com>
Cc: "Cooper Jr., Franklin" <fcooper@ti.com>
Cc: George McCollister <george.mccollister@gmail.com>
Cc: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Cc: Jean-Jacques Hiblot <jjhiblot@ti.com>
Cc: Rick Altherr <raltherr@google.com>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: York Sun <york.sun@nxp.com>
6 years agoARM: omap3_logic: Enable NAND unlocking during Falcon mode
Adam Ford [Mon, 4 Dec 2017 23:54:50 +0000 (17:54 -0600)]
ARM: omap3_logic: Enable NAND unlocking during Falcon mode

Falcon mode was already working with SD card.  This enables the
unlocking of NAND to allow the NAND read & write.  This also
expands the README file based on the am335x describing how to
setup Falcon mode.

Signed-off-by: Adam Ford <aford173@gmail.com>
6 years agoARM: omap3_logic: Unlock NAND automatically in U-Boot
Adam Ford [Sun, 3 Dec 2017 12:24:53 +0000 (06:24 -0600)]
ARM: omap3_logic: Unlock NAND automatically in U-Boot

The Micron Flash is locked by default.  This will automaticlly
unlock so manually unlocking is unnecessary in U-Boot.

Signed-off-by: Adam Ford <aford173@gmail.com>
6 years agoomap3_logic: Increase CMD_SPL_WRITE_SIZE
Adam Ford [Sat, 2 Dec 2017 17:10:55 +0000 (11:10 -0600)]
omap3_logic: Increase CMD_SPL_WRITE_SIZE

The SPL-OS partition is 0x20000, so let's make
CONFIG_CMD_SPL_WRITE_SIZE same size. This should allow for better
falcon mode operation.

Signed-off-by: Adam Ford <aford173@gmail.com>
6 years agodrivers: spmi-msm: fix scanning for peripherals
Jorge Ramirez-Ortiz [Sat, 2 Dec 2017 16:24:42 +0000 (17:24 +0100)]
drivers: spmi-msm: fix scanning for peripherals

A typo in the probe function causes not all peripherals to be scanned
(in the case of the Dragonboard820c - work in progress - it wont find pmic0).

6 years agoata: Migrate CONFIG_MVSATA_IDE to Kconfig
Tuomas Tynkkynen [Fri, 8 Dec 2017 13:36:21 +0000 (15:36 +0200)]
ata: Migrate CONFIG_MVSATA_IDE to Kconfig

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
6 years agoata: Migrate CONFIG_LIBATA to Kconfig
Tuomas Tynkkynen [Fri, 8 Dec 2017 13:36:20 +0000 (15:36 +0200)]
ata: Migrate CONFIG_LIBATA to Kconfig

This symbol enables some library code used by various SATA drivers,
so make this a non-user-visible symbol select'ed by the respective
drivers, and let moveconfig handle the rest.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
6 years agoata: Migrate CONFIG_SCSI_AHCI to Kconfig
Tuomas Tynkkynen [Fri, 8 Dec 2017 13:36:19 +0000 (15:36 +0200)]
ata: Migrate CONFIG_SCSI_AHCI to Kconfig

And use 'imply' liberally.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
6 years agoata: Migrate CONFIG_DWC_AHSATA to Kconfig
Tuomas Tynkkynen [Fri, 8 Dec 2017 13:36:18 +0000 (15:36 +0200)]
ata: Migrate CONFIG_DWC_AHSATA to Kconfig

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
6 years agoata: Migrate CONFIG_FSL_SATA to Kconfig
Tuomas Tynkkynen [Fri, 8 Dec 2017 13:36:17 +0000 (15:36 +0200)]
ata: Migrate CONFIG_FSL_SATA to Kconfig

Use 'imply' here liberally to avoid the combinatorial explosion of
defconfig changes in the PowerPC boards.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
6 years agoata: Migrate CONFIG_SATA_MV to Kconfig
Tuomas Tynkkynen [Fri, 8 Dec 2017 13:36:16 +0000 (15:36 +0200)]
ata: Migrate CONFIG_SATA_MV to Kconfig

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
6 years agoata: Migrate CONFIG_SATA_SIL3114 to Kconfig
Tuomas Tynkkynen [Fri, 8 Dec 2017 13:36:15 +0000 (15:36 +0200)]
ata: Migrate CONFIG_SATA_SIL3114 to Kconfig

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
6 years agoata: Migrate CONFIG_SATA_SIL to Kconfig
Tuomas Tynkkynen [Fri, 8 Dec 2017 13:36:14 +0000 (15:36 +0200)]
ata: Migrate CONFIG_SATA_SIL to Kconfig

Use 'imply' here liberally to avoid the combinatorial explosion of
defconfig changes in the PowerPC boards.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
6 years agoata: Drop CONFIG_MX51_PATA
Tuomas Tynkkynen [Fri, 8 Dec 2017 13:36:13 +0000 (15:36 +0200)]
ata: Drop CONFIG_MX51_PATA

The last user of this driver went away in August 2015 in commit:
b6073fd2115 ("arm: Remove mx51_efikamx, mx51_efikasb boards")

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
6 years agoata: Drop CONFIG_SATA_DWC
Tuomas Tynkkynen [Fri, 8 Dec 2017 13:36:12 +0000 (15:36 +0200)]
ata: Drop CONFIG_SATA_DWC

The last user of this driver went away in June 2017, in commit:
98f705c9ce ("powerpc: remove 4xx support")

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
6 years agoMerge git://git.denx.de/u-boot-arc
Tom Rini [Tue, 12 Dec 2017 15:57:58 +0000 (10:57 -0500)]
Merge git://git.denx.de/u-boot-arc

6 years agogpio/hsdk: Depend on DM_GPIO instead of simple DM
Alexey Brodkin [Sun, 10 Dec 2017 17:55:44 +0000 (20:55 +0300)]
gpio/hsdk: Depend on DM_GPIO instead of simple DM

This driver really is DM GPIO one and so we need to have a correct
dependency, because DM alone doesn't provide required for CMD_GPIO
call and we're seeing build failures like this:
---------------------->8---------------------
cmd/built-in.o: In function 'do_gpio':
.../cmd/gpio.c:188: undefined reference to 'gpio_request'
...
---------------------->8---------------------

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Eugeniy Paltsev <paltsev@synopsys.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
6 years agoMerge git://git.denx.de/u-boot-uniphier
Tom Rini [Mon, 11 Dec 2017 22:06:04 +0000 (17:06 -0500)]
Merge git://git.denx.de/u-boot-uniphier

6 years agoMerge git://git.denx.de/u-boot-arc
Tom Rini [Mon, 11 Dec 2017 22:05:43 +0000 (17:05 -0500)]
Merge git://git.denx.de/u-boot-arc

6 years agoARM: uniphier: use FIELD_PREP for PLL settings
Masahiro Yamada [Wed, 6 Dec 2017 05:16:34 +0000 (14:16 +0900)]
ARM: uniphier: use FIELD_PREP for PLL settings

It is tedious to define both mask and bit-shift.  <linux/bitfield.h>
provides a convenient way to get access to register fields with a
single shifted mask.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
6 years agoARM: uniphier: compute SSCPLL values more precisely
Masahiro Yamada [Wed, 6 Dec 2017 05:16:33 +0000 (14:16 +0900)]
ARM: uniphier: compute SSCPLL values more precisely

Use DIV_ROUND_CLOSEST().  To make the JK value even more precise,
I used a bigger coefficient, then divide it by 512.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
6 years agoARM: uniphier: fix SSCPLL init code for LD11 SoC
Dai Okamura [Wed, 6 Dec 2017 05:16:32 +0000 (14:16 +0900)]
ARM: uniphier: fix SSCPLL init code for LD11 SoC

Commit 682e09ff9f35 ("ARM: uniphier: add PLL init code for LD20 SoC")
missed to write the computed value to the SSCPLLCTRL2 register.

Fixes: 682e09ff9f35 ("ARM: uniphier: add PLL init code for LD20 SoC")
Signed-off-by: Dai Okamura <okamura.dai@socionext.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
6 years agomtd: nand: denali: make NAND_DENALI unconfigurable option
Masahiro Yamada [Wed, 6 Dec 2017 04:51:50 +0000 (13:51 +0900)]
mtd: nand: denali: make NAND_DENALI unconfigurable option

denali.c has no driver entry in itself.  It makes sense only when
compiled together with denali_dt.c

Let NAND_DENALI_DT select NAND_DENALI, and hide NAND_DENALI from
the Kconfig menu.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
6 years agoARM: uniphier: compile pll-base-ld20.c for PXs3
Masahiro Yamada [Wed, 6 Dec 2017 04:16:45 +0000 (13:16 +0900)]
ARM: uniphier: compile pll-base-ld20.c for PXs3

Fix the link error for the combination of
  CONFIG_ARCH_UNIPHIER_LD11=n
  CONFIG_ARCH_UNIPHIER_LD20=n
  CONFIG_ARCH_UNIPHIER_PXS3=y

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
6 years agoARC: clk: introduce HSDK CGU clock driver
Eugeniy Paltsev [Sun, 10 Dec 2017 18:20:08 +0000 (21:20 +0300)]
ARC: clk: introduce HSDK CGU clock driver

Synopsys HSDK clock controller generates and supplies clocks to various
controllers and peripherals within the SoC.

Each clock has assigned identifier and client device tree nodes can use
this identifier to specify the clock which they consume. All available
clocks are defined as preprocessor macros in the
dt-bindings/clock/snps,hsdk-cgu.h header and can be used in device
tree sources.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
6 years agoARC: cache: explicitly initialize "*_exists" variables
Eugeniy Paltsev [Thu, 30 Nov 2017 14:41:32 +0000 (17:41 +0300)]
ARC: cache: explicitly initialize "*_exists" variables

dcache_exists, icache_exists, slc_exists and ioc_exists global
variables in "arch/arc/lib/cache.c" remain uninitialized if
SoC doesn't have corresponding HW.

This happens because we use the next constructions for their
definition and initialization:
-------------------------->>---------------------
int ioc_exists __section(".data");

if (/* condition */)
ioc_exists = 1;
-------------------------->>---------------------

That's quite a non-trivial issue as one may think of it.
The point is we intentionally put those variables in ".data" section
so they might survive relocation (remember we initilaize them very early
before relocation and continue to use after reloaction). While being
non-initialized and not explicitly put in .data section they would end-up
in ".bss" section which by definition is filled with zeroes.
But since we place those variables in .data section we need to care
about their proper initialization ourselves.

Also while at it we change their type to "bool" as more appropriate.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
6 years agoARC: add defines of some cache and xCCM AUX registers
Eugeniy Paltsev [Tue, 28 Nov 2017 13:51:07 +0000 (16:51 +0300)]
ARC: add defines of some cache and xCCM AUX registers

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
6 years agoARC: add macro to get CPU id
Eugeniy Paltsev [Tue, 28 Nov 2017 13:48:40 +0000 (16:48 +0300)]
ARC: add macro to get CPU id

ARCNUM [15:8] field in ARC_AUX_IDENTITY register allows us to
uniquely identify each core in a multi-core system.

I.e. with help of this macro each core may get its index in SMP system.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
6 years agoARC: HSDK: Fixup DW SDIO CIU frequency to 50000000Hz
Eugeniy Paltsev [Sat, 21 Oct 2017 12:35:12 +0000 (15:35 +0300)]
ARC: HSDK: Fixup DW SDIO CIU frequency to 50000000Hz

DW SDIO controller has external CIU clock divider controlled via
register in the SDIO IP. Due to its unexpected default value
(we expected it to divide by 1 but in reality it divides by 8)
SDIO IP uses wrong CIU clock (it should be 100000000Hz but actual
is 12500000Hz) and works unstable (see STAR 9001204800).

So increase SDIO CIU frequency from actual 12500000Hz to 50000000Hz
by switching from the default divisor value (div-by-8) to the
minimum possible value of the divisor (div-by-2) in HSDK platform
code.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
6 years agoARC: add asm/gpio.h to fix compilation error with CONFIG_CMD_GPIO
Eugeniy Paltsev [Mon, 16 Oct 2017 12:15:33 +0000 (15:15 +0300)]
ARC: add asm/gpio.h to fix compilation error with CONFIG_CMD_GPIO

With CONFIG_CMD_GPIO compilation reports error:
-------------------------->8---------------------
common/cmd_gpio.c:13:22: fatal error: asm/gpio.h: No such file or directory
 #include <asm/gpio.h>
                      ^
-------------------------->8---------------------

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
6 years agoARM: socfpga: remove unneeded CONFIG_SYS_NAND_USE_FLASH_BBT
Masahiro Yamada [Wed, 29 Nov 2017 10:13:46 +0000 (19:13 +0900)]
ARM: socfpga: remove unneeded CONFIG_SYS_NAND_USE_FLASH_BBT

Neither denali.c nor denali_spl.c references this option.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
6 years agoARM: socfpga: remove unused CONFIG_NAND_DENALI_ECC_SIZE
Masahiro Yamada [Wed, 29 Nov 2017 10:13:45 +0000 (19:13 +0900)]
ARM: socfpga: remove unused CONFIG_NAND_DENALI_ECC_SIZE

This option is no longer used.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
6 years agousb: r8a66597: convert wait loop to readw_poll_timeout
Chris Brandt [Wed, 29 Nov 2017 19:49:21 +0000 (14:49 -0500)]
usb: r8a66597: convert wait loop to readw_poll_timeout

It is better to use an existing wait loop implementation.

Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
6 years agoARM: rmobile: Add R8A77995 D3 Draak board
Marek Vasut [Sun, 8 Oct 2017 18:41:18 +0000 (20:41 +0200)]
ARM: rmobile: Add R8A77995 D3 Draak board

Add bits to support yet another board, the R8A77995 D3 Draak.
The DT file is from Linux 4.15-rc1 , commit
b35334447513c14a4dd55a67c269a743d4a4824b .

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 years agoARM: rmobile: Add R8A77970 V3M Eagle board
Marek Vasut [Mon, 9 Oct 2017 19:08:10 +0000 (21:08 +0200)]
ARM: rmobile: Add R8A77970 V3M Eagle board

Add bits to support yet another board, the R8A77970 V3M Eagle.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 years agonet: ravb: Add R8A77995 D3 compatible
Marek Vasut [Sat, 21 Oct 2017 09:35:49 +0000 (11:35 +0200)]
net: ravb: Add R8A77995 D3 compatible

Add new compatible to the Ethernet AVB driver for R8A77995 D3 SoC.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 years agonet: ravb: Add R8A77970 V3M compatible
Marek Vasut [Sat, 21 Oct 2017 09:33:17 +0000 (11:33 +0200)]
net: ravb: Add R8A77970 V3M compatible

Add new compatible to the Ethernet AVB driver for R8A77970 V3M SoC.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 years agommc: uniphier-sd: Add R8A77995 D3 compatible
Marek Vasut [Sat, 21 Oct 2017 09:33:20 +0000 (11:33 +0200)]
mmc: uniphier-sd: Add R8A77995 D3 compatible

Add new compatible to the Uniphier SD driver for R8A77995 D3 SoC.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 years agommc: uniphier-sd: Add R8A77970 V3M compatible
Marek Vasut [Sat, 21 Oct 2017 09:31:57 +0000 (11:31 +0200)]
mmc: uniphier-sd: Add R8A77970 V3M compatible

Add new compatible to the Uniphier SD driver for R8A77970 V3M SoC.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 years agogpio: rmobile: Add generic Gen3 compatible
Marek Vasut [Sat, 21 Oct 2017 09:30:41 +0000 (11:30 +0200)]
gpio: rmobile: Add generic Gen3 compatible

Add generic compatible to the GPIO driver for Gen3 SoCs.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 years agogpio: rmobile: Add R8A77995 D3 compatible
Marek Vasut [Sat, 21 Oct 2017 09:28:06 +0000 (11:28 +0200)]
gpio: rmobile: Add R8A77995 D3 compatible

Add new compatible to the GPIO driver for R8A77995 D3 SoC.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 years agogpio: rmobile: Add R8A77970 V3M compatible
Marek Vasut [Sat, 21 Oct 2017 09:27:04 +0000 (11:27 +0200)]
gpio: rmobile: Add R8A77970 V3M compatible

Add new compatible to the GPIO driver for R8A77970 V3M SoC.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 years agopinctrl: rmobile: Add R8A77995 D3 PFC tables
Marek Vasut [Sun, 8 Oct 2017 18:57:37 +0000 (20:57 +0200)]
pinctrl: rmobile: Add R8A77995 D3 PFC tables

Add PFC tables for R8A77995 D3 SoC.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 years agopinctrl: rmobile: Add R8A77970 V3M PFC tables
Marek Vasut [Mon, 9 Oct 2017 18:57:29 +0000 (20:57 +0200)]
pinctrl: rmobile: Add R8A77970 V3M PFC tables

Add PFC tables for R8A77970 V3M SoC.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 years agoclk: rmobile: Add R8A77995 D3 clock tables
Marek Vasut [Sun, 8 Oct 2017 19:09:15 +0000 (21:09 +0200)]
clk: rmobile: Add R8A77995 D3 clock tables

Add clock tables for R8A77995 D3 SoC.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 years agoclk: rmobile: Add R8A77970 V3M clock tables
Marek Vasut [Mon, 9 Oct 2017 18:52:33 +0000 (20:52 +0200)]
clk: rmobile: Add R8A77970 V3M clock tables

Add clock tables for R8A77970 V3M SoC.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 years agoARM: rmobile: Add R8A77995 SoC
Marek Vasut [Sun, 8 Oct 2017 18:52:52 +0000 (20:52 +0200)]
ARM: rmobile: Add R8A77995 SoC

Add bits to support yet another SoC, the R8A77995 D3 .

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 years agoARM: rmobile: Add R8A77970 SoC
Marek Vasut [Mon, 9 Oct 2017 18:39:47 +0000 (20:39 +0200)]
ARM: rmobile: Add R8A77970 SoC

Add bits to support yet another SoC, the R8A77970 V3M .

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 years agoclk: rmobile: Fix typo in R8A7796 RPC clock table entry
Marek Vasut [Thu, 30 Nov 2017 02:01:52 +0000 (03:01 +0100)]
clk: rmobile: Fix typo in R8A7796 RPC clock table entry

Fix a copy-paste typo in the clock table entry, s/7795/7796/.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 years agoMerge git://git.denx.de/u-boot-mpc85xx
Tom Rini [Fri, 8 Dec 2017 17:02:01 +0000 (12:02 -0500)]
Merge git://git.denx.de/u-boot-mpc85xx

6 years agoMerge git://git.denx.de/u-boot-rockchip
Tom Rini [Fri, 8 Dec 2017 14:32:10 +0000 (09:32 -0500)]
Merge git://git.denx.de/u-boot-rockchip

6 years agorockchip: rk3399-puma: preserve leading zeros in serial#
Jakob Unterwurzacher [Thu, 7 Dec 2017 15:20:44 +0000 (16:20 +0100)]
rockchip: rk3399-puma: preserve leading zeros in serial#

Linux preserves leading zeros in /proc/cpuinfo, so we
should as well.

Otherwise we have the situation that
/sys/firmware/devicetree/base/serial-number
and /proc/cpuinfo disagree in Linux.

Signed-off-by: Jakob Unterwurzacher <jakob.unterwurzacher@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
6 years agoMerge git://git.denx.de/u-boot-fsl-qoriq
Tom Rini [Thu, 7 Dec 2017 22:56:51 +0000 (17:56 -0500)]
Merge git://git.denx.de/u-boot-fsl-qoriq

6 years agoarmv8: fix gd after relocation
York Sun [Thu, 7 Dec 2017 21:16:07 +0000 (13:16 -0800)]
armv8: fix gd after relocation

Commit 21f4486faa5d ("armv8: update gd after relocate") sets x18
without checking the return value of spl_relocate_stack_gd().

Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: York Sun <york.sun@nxp.com>
CC: Kever Yang <kever.yang@rock-chips.com>
CC: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
6 years agolog: Add documentation
Simon Glass [Mon, 4 Dec 2017 20:48:31 +0000 (13:48 -0700)]
log: Add documentation

Add documentation for the log system.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
6 years agolog: test: Add a pytest for logging
Simon Glass [Mon, 4 Dec 2017 20:48:30 +0000 (13:48 -0700)]
log: test: Add a pytest for logging

Add a test which tries out various filters and options to make sure that
logging works as expected.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agolog: sandbox: Enable logging
Simon Glass [Mon, 4 Dec 2017 20:48:29 +0000 (13:48 -0700)]
log: sandbox: Enable logging

Enable all logging features on sandbox so that the tests can be run.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
6 years agolog: Plumb logging into the init sequence
Simon Glass [Mon, 4 Dec 2017 20:48:28 +0000 (13:48 -0700)]
log: Plumb logging into the init sequence

Set up logging both before and after relocation.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
6 years agolog: Add a test command
Simon Glass [Mon, 4 Dec 2017 20:48:27 +0000 (13:48 -0700)]
log: Add a test command

Add a command which exercises the logging system.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agolog: Add a 'log level' command
Simon Glass [Mon, 4 Dec 2017 20:48:26 +0000 (13:48 -0700)]
log: Add a 'log level' command

Add a command for adjusting the log level.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
6 years agolog: Add a console driver
Simon Glass [Mon, 4 Dec 2017 20:48:25 +0000 (13:48 -0700)]
log: Add a console driver

It is useful to display log messages on the console. Add a simple driver
to handle this.

Note that this driver outputs to the console, which may be serial or
video. It does not specifically select serial output.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
6 years agolog: Add an implementation of logging
Simon Glass [Mon, 4 Dec 2017 20:48:24 +0000 (13:48 -0700)]
log: Add an implementation of logging

Add the logging header file and implementation with some configuration
options to control it.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agoDrop the log buffer
Simon Glass [Mon, 4 Dec 2017 20:48:23 +0000 (13:48 -0700)]
Drop the log buffer

This does not appear to be used by any boards. Before introducing a new
log system, remove this old one.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
6 years agousb: Correct use of debug()
Simon Glass [Mon, 4 Dec 2017 20:48:22 +0000 (13:48 -0700)]
usb: Correct use of debug()

With clang this gives a warning because hubsts appears to be used before
it is set, even if ultimately it is not used. Simplify the code to avoid
this problem.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agomtdparts: Correct use of debug()
Simon Glass [Mon, 4 Dec 2017 20:48:21 +0000 (13:48 -0700)]
mtdparts: Correct use of debug()

The debug() macro now evaluates its expression so does not need #ifdef
protection. In fact the current code causes a warning with the new log
implementation. Adjust the code to fix this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
6 years agoMove debug and logging support to a separate header
Simon Glass [Mon, 4 Dec 2017 20:48:20 +0000 (13:48 -0700)]
Move debug and logging support to a separate header

Before adding new features, move these definitions to a separate header
to avoid further cluttering common.h.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
6 years agoRevert "sandbox: Drop special case console code for sandbox"
Simon Glass [Mon, 4 Dec 2017 20:48:19 +0000 (13:48 -0700)]
Revert "sandbox: Drop special case console code for sandbox"

While sandbox works OK without the special-case code, it does result in
console output being stored in the pre-console buffer while sandbox starts
up. If there is a crash or a problem then there is no indication of what
is going on.

For ease of debugging it seems better to revert this change also.

This reverts commit d8c6fb8cedbc35eee27730a7fa544e499b3c81cc.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agosandbox: Adjust pre-console address to avoid conflict
Simon Glass [Mon, 4 Dec 2017 20:48:18 +0000 (13:48 -0700)]
sandbox: Adjust pre-console address to avoid conflict

We cannot use sandbox memory at 0 since other things use memory at that
address. Move it up out of the way.

Note that the pre-console buffer is currently disabled with sandbox, but
this change will avoid confusion if it is manually enabled.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agoRevert "sandbox: remove os_putc() and os_puts()"
Simon Glass [Mon, 4 Dec 2017 20:48:17 +0000 (13:48 -0700)]
Revert "sandbox: remove os_putc() and os_puts()"

While sandbox works OK without the special-case code, it does result in
console output being stored in the pre-console buffer while sandbox starts
up. If there is a crash or a problem then there is no indication of what
is going on.

For ease of debugging it seems better to revert this change.

This reverts commit 47b98ad0f6779485d0f0c14f337c3eece273eb54.

Signed-off-by: Simon Glass <sjg@chromium.org>
6 years agoMerge git://git.denx.de/u-boot-i2c
Tom Rini [Thu, 7 Dec 2017 12:28:20 +0000 (07:28 -0500)]
Merge git://git.denx.de/u-boot-i2c

6 years agocmd: i2c: Fix use sdram sub command with CONFIG_DM_I2C
Nobuhiro Iwamatsu [Fri, 1 Dec 2017 05:39:40 +0000 (14:39 +0900)]
cmd: i2c: Fix use sdram sub command with CONFIG_DM_I2C

sdram sub command of i2c command does not support Drivers Model.
This adds Drivers Model support to sdram sub command.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
6 years agoi2c: at91_i2c: remove the .probe_chip function
Alan Ott [Wed, 29 Nov 2017 03:25:24 +0000 (22:25 -0500)]
i2c: at91_i2c: remove the .probe_chip function

The .probe_chip function is supposed to probe an i2c device on the bus to
determine whether a device is answering to a particular address.
at91_i2c_probe_chip() did not do anything resembling this and always
returned 0.

It looks as though at91_i2c_probe_chip() was intended to be a .probe
function for the controller, as it was copied-and-pasted to become
at91_i2c_probe() in 0bc8f640a4d7ed.

Removing the at91_i2c_probe_chip() function makes the higher layer
(i2c_probe_chip()) try a zero-length read transfer to test for the
presence of a device instead, which does work.

Signed-off-by: Alan Ott <alan@softiron.com>
Acked-by: Wenyou Yang <wenyou.yang@microchip.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
6 years agoi2c: at91_i2c: Wait for TXRDY after sending the first byte
Alan Ott [Wed, 29 Nov 2017 03:25:23 +0000 (22:25 -0500)]
i2c: at91_i2c: Wait for TXRDY after sending the first byte

The driver must wait for TXRDY after each byte is pushed into
the i2c FIFO before pushing the next byte. Previously this was
not done for the first byte, causing a race condition with zeros
sometimes being sent for the next byte (which is typically the
first actual data byte).

Signed-off-by: Alan Ott <alan@softiron.com>
Reviewed-by: Heiko Schocher <hs@denx.de>