drivers: mark first batch of compilable drivers for COMPILE_TEST ...

All of these drivers have a runtime dependency on SoC peripherals, but
can nevertheless be compile-tested. Add COMPILE_TEST as an alternate
dependency.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

common: introduce COMPILE_TEST option for build-testing ...

Compile-time analysis may help us catch latent bugs in barebox. For this
to be most effective, we need an easy way to compile as much of barebox
as possible. Giving all driver options prompts would do this, but at the
cost of making user experience worse, by asking them about drivers for HW
that's clearly not relevant to the platform they selected.

Do as Linux does and provide a default-off COMPILE_TEST option, which we
can use to make extra drivers selectable.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

drivers: explicitly select dependency STMP_DEVICE for i.MX23/28 drivers ...

Some of the i.MXs drivers can be build tested even if building for other
platforms. Support adding a future COMPILE_TEST dependency to some of
these drivers by explicitly having their Kconfig symbol select STMP_DEVICE
if the driver calls stmp_reset_block.

This has not been necessary for the normal build, because the ARCH
symbols for the IMX23 and IMX28 already selected STMP_DEVICE.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: at91: Move mci platform data to include/ ...

To be able to add the Atmel mci driver to COMPILE_TEST move the
definition of struct atmel_mci_platform_data to include/ where it
can be reached from foreign SoCs as well.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fs: Fix inode size setting in ftruncate ...

When changing a file size the size of the corresponding inode has to be
changed as well.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

kbuild: add $(always-y) to 'targets' ...

I missed to sync this line in commit 421108c51da4 ("kbuild: rename
hostprogs-y/always to hostprogs/always-y").

Since then, the files in always(-y) are needlessly rebuilt.

Fixes: 421108c51da4 ("kbuild: rename hostprogs-y/always to hostprogs/always-y")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: ssd1307fb: fix null pointer dereference on error ...

On error, a goto may jump over the initialization of vmem and free the
uninitialized value during clean up. Fix this.

Found by compiling the code with clang.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: Phytec phyFLEX i.MX6: delete wrong memory node ...

The phyFLEX i.MX6 has two memory nodes in the device tree. /memory comes
from the barebox dtsi file and contains dummy values. This is
unnecessary, barebox will create a memory node when booting the kernel.
The other one comes from the Kernel dtsi and causes more harm. The
memory in the node has a size of 2GiB. Not all boards have so much
memory, since 8226f7f909 ("of: base: parse all available memory nodes")
this node is no longer ignored and now all boards are assumed to have
2GiB of memory. Remove the node using /delete-node/

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Stefan Riedmüller <s.riedmueller@phytec.de>

ppc: Test for compiler options ...

The -mno-spe and -mspe=no options are not available on all compilers.
Call cc-option to set them only when they exist.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

dtc: remove redundant YYLOC global declaration ...

Same as the upstream fix for building dtc with gcc 10.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Documentation: kvx: add first documentation ...

Add documentation on kvx architecture and kalray k200 board.

Signed-off-by: Clement Leger <cleger@kalray.eu>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: dts. i.MX7: add stopgap solution for barebox UART clock breakage ...

Commit 8b2104d740 ("driver: Call of_clk_set_defaults for each probed device")
made barebox act on the assigned-clock-parents property everywhere, not
only for clock provider nodes. This breaks at least the serial console on
the i.MX7 SabreSD board; only garbage is output if the patch is not
reverted. As stopgap measure, override these properties for all enabled
uart nodes in the barebox i.MX7 device tree. This reverts the behavior
to what it was like before the offending commit.

This is of course no real solution, as obviously Linux was fine dealing
with these properties before. But this hack should at least fix the
serial console for the boards that were broken in v2020.03.0.

When a proper fix follows, this patch can be reverted.

Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Juergen Borleis <jbe@pengutronix.de>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/zynq'

Merge branch 'for-next/zii'

Merge branch 'for-next/usb'

Merge branch 'for-next/spi'

Merge branch 'for-next/pwm'

Merge branch 'for-next/nfs'

Merge branch 'for-next/net'

Merge branch 'for-next/misc'

Merge branch 'for-next/layerscape'

Merge branch 'for-next/kalray-coolidge'

Merge branch 'for-next/dts'

Merge branch 'for-next/dfu'

Merge branch 'for-next/at91-clk'

Merge branch 'for-next/arm'

clk: at91: sckc: fix off-by-1000 in udelay() ...

SECOND is the number of nanoseconds in a second, but we need
the number of microseconds for use in udelay. Use USEC_PER_SEC.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clk: at91: port Linux v5.6 SAM9X60 (new ARM926EJ-S) clock support ...

During a bug hunt that ultimately turned out unrelated to the state
of the barebox at91 clk driver, I synchronized its state with Linux v5.6.

Bug fixes and clean up to minimize the diff were split out in separate
prior commits.  This last commit imports the rest, which is basically
support for Microchip's new ARM926EJ-S SoC, the SAM9x60.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clk: at91: add sama5d2 audio PLL support ...

Commit 7310b976 ("clk: at91: fix compilation errors in sama5d2.c") and
follow-up commit ca3077068c ("clk: at91: delete dead i2s/audio code")
had deleted the i2s/audio clock related parts of the upstream driver.

This was mostly due to unwillingness on my part to understand the code
enough for porting them and because I deemed them unnecessary to support
in barebox. The former has changed and the latter is not totally true as
audio PLL derived clocks may be muxed as inputs for programmable and
generated clocks.

Port them over and mimize the diff to upstream.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clk: at91: allow 24 Mhz clock as input for PLL ...

The PLL input range needs to be able to allow 24 Mhz crystal as input
Update the range accordingly in plla characteristics struct

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Link: https://lkml.kernel.org/r/1568183622-7858-1-git-send-email-eugen.hristev@microchip.com
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Fixes: c561e41ce4d2 ("clk: at91: add sama5d2 PMC driver")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
[afa: ported to barebox from Linux commit 81a6b601f9f49]
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>