ARM: i.MX: Import imx7-iomuxc-gpr.h from Linux kernel ...

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: i.MX: Add ARCH_HAD_FEC_IMX to ARCH_IMX7 ...

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: i.MX: Add minimal imx7-ccm-regs.h ...

Add minimal imx7-ccm-regs.h that contains bare minimum definitions
needed for early UART setup.

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: i.MX: Add imx7_uart_setup_ll() ...

Add imx7_uart_setup_ll() for setting up UART selected for DEBUG_LL.

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: i.MX: Add mx7_setup_pad() ...

Add mx7_setup_pad() low-level convenience function for setting up
pinmux in PBL code.

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: i.MX: Import mx7d_pins.h from U-Boot ...

Import mx7d_pins.h from U-Boot and rename it to iomux-mx7.h for
consistency.

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

clk: i.MX7: Remove unused UART clocks array ...

Remove what looks like unused leftover from analogous Linux kernel
code.

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: i.MX7: Warp7: Add some code comments ...

This makes it easier to understand what is done and adapt this code for
other boards. My editor also added a newline at eof which is good.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: i.MX7: drop now useless imx7s.dtsi ...

This file was introduced in commit 55eed47d8515 ("ARM: i.MX7: Add
imx7s.dtsi") because the imx clocksource driver picked the wrong clock
to determine the parent frequency. As this is fixed since commit
"ARM: imx: clocksource: Use per clock for determining parent freq" this
file can go away.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: imx: clocksource: make warning a bit more helpful ...

When getting the clk for the gpt fails, the driver assumes a fixed rate.
Add this rate to the warning that is emitted in this case.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: imx: clocksource: error out if clk freq is 0 ...

If instead this isn't checked this results in a division by zero later.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: imx: clocksource: Use per clock for determining parent freq ...

For imx1, imx25, imx27, imx31, imx35 and imx5x this doesn't make a
difference because clk_get(dev, NULL) returns the same clock as
clk_get(dev, "per") because the id parameter isn't checked at all and
the per clock is returned unconditionally.

For imx6sl, imx6sx and imx6ul different clocks are returned, but both
are gates for "perclk". For imx6qdl clk_get(..., NULL) returns
IMX6QDL_CLK_GPT_IPG which is a gate of "ipg", while clk_get(..., "per")
returns IMX6QDL_CLK_GPT_IPG_PER which is a gate of "ipg_per" which in
turn is a divider of "ipg" with a boot-up default value of 1 which isn't
touched in barebox.

So the only SoC where this change matters is imx7 where clk_get(dev,
NULL) returns a dummy clk while clk_get(dev, "per") returns the right
clk to use.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: use register defines in the dcd table of the WaRP7 ...

This was generated with the following command after adding the include
directive to the file:

	scripts/regsubst.pl -I arch/arm/mach-imx/include arch/arm/boards/element14-warp7/flash-header-mx7-warp.imxcfg

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: i.MX7: provide DDR register definitions ...

This was created using cut'n'paste from the i.MX7D reference manual
(rev 0.1, 08/2016).

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

scripts: Provide script that helps using cpp defines in dcd tables ...

This script was used to help create commit 8f426992c562 ("ARM: imx: use
register defines in imxcfg files instead of plain numbers").

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: imx6: add static annotation to locally used functions ...

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: imx6: move MX6UL enet setup out of CPU string setting ...

This is not a good place to do this ENET setup. Call the function like all
the other setup functions and bail out if the SoC is not a i.MX6UL/ULL.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: imx: remove DCD files from Makefiles ...

The current multi-image mechnism builds them as needed, so there is no
reason to include them in the Makefiles. Remove them before this spreads
even more.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: rdu2: include defaultenv from board ...

Makes it available without the need for a spacial barebox config.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: rdu2: remove unecessary includes ...

The board file has many more includes than what is really needed,
clean this up.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: rdu2: remove USB VBUS GPIO init ...

This is handled by a fixed regulator in the upstream DT.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: rdu2: use the upstream accepted DT ...

We now only need to carry the Barebox specific parts of the DT.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: imx: phyCORE i.MX7 on phyBOARD-Zeta support ...

This adds preliminary support for the phyCORE i.MX7 module on a
phyBOARD-Zeta baseboard. The DTs will likely change in the future
when PHYTEC finalizes their BSP.

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

ARM: imx: use register defines in imxcfg files instead of plain numbers ...

This makes the imxcfg files more readable and also makes it possible to
share more assignments between machines that just differ by the used
SoC. (Though I have to admit that in the cases converted here it just
more easily allows to see that the RAM config differs more than probably
necessary.)

This change is intended to have no effect on the built artifacts.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

regulator: pfuze: provide power over standby handler ...

This patch is providing an optional power off handler
which will configure standby state of the PMIC to disable all power lines.

In my power consumption test on RIoTBoard, I got the following results:
power off without this patch:   320 mA
power off with this patch:      2   mA

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: i.MX: provide handler for power off over standby ...

One of the Freescale recommended sequences for power off with external
PMIC is the following:
...
3.  SoC is programming PMIC for power off when standby is asserted.
4.  In CCM STOP mode, Standby is asserted, PMIC gates SoC supplies.

See:
http://www.nxp.com/assets/documents/data/en/reference-manuals/IMX6DQRM.pdf
page 5083

This patch implements step 4. of this sequence.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

ARM: riotboard: provide standby on power off option ...

This board, as well as some other boards with i.MX6 and a PMIC, uses a
"PMIC_STBY_REQ" line to notify the PMIC about a state change.
The PMIC is programmed for a specific state change before triggering the
line.
In this case, PMIC_STBY_REQ can be used for stand by, sleep
and power off modes.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

gpio: fix null pointer exception when there is no oftree ...

In a system with oftree support enabled but with no oftree the
of_gpiochip_scan_hogs() would fail due to device_node equals NULL.

Check device_node and return with 0 in this situation, as this
mirrors what would have happened before we added support for gpio-hogs.

Use IS_ENABLED(CONFIG_OFDEVICE) to teach compiler to leave
out the of_* specific functions if not needed.

Fixes: 37e6bee7 ("gpiolib: Add support for GPIO "hog" nodes")
Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

clk: fix clk_get error handling ...

If there is no OFTREE support of_clk_get_by_name failed with
-ENOENT, which caused clk_get to bail out.
This had the effect that nothing was printed on the serial console
with at91sam9263-ek.

There are no error paths that will return -ENODEV as we test for today,
so change this to -ENOENT which is in use.
This allows us to contine with clk_get_sys() in case of other
errors as was the intention of the original fix.

Fixes: 90f7eacb ("clk: let clk_get return errors from of_clk_get_by_name")
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

Revert "param: fix stub prototype of dev_add_param" ...

This reverts commit 441941f, which was on
top of the recently reverted nvvar rework, so needs to be reverted, too.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>