Merge branch 'for-next/ramfs'

Merge branch 'for-next/misc'

Merge branch 'for-next/dts'

treewide: Convert files covered by ARM copyright to SPDX ...

According to Marc Zyngier, former employee at ARM, the company owns the
copyright for code created by its employees. Convert accordingly to SPDX
with the usual rearrangements. Also dropped Marc's email address which
doesn't work any more.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: add uapi/linux/mdio.h from kernel for MDIO MMD access ...

The headerfile is used in the kernel for access of MDIO Managed Devices
(MMD) indirect access. Some drivers already use those device addresses.
We add the headerfile from the kernel and change the current users to
use the defines instead

Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

include: import upstream header <linux/overflow.h> ...

Incoming code makes use of struct_size, which is defined upstream in
<linux/overflow.h>. Import the Linux v5.8-rc1 header as is.

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

clk: sync of_clk_get_parent_name with upstream ...

Upstream of_clk_get_parent_name only resorts to node name as a fallback.
Instead, it uses the name supplied for registered clocks whenever
possible. On the sama5d2, this results in sckc@f8048050 and slowck,
respectively. So far, sckc@f8048050 in the parents array couldn't be
matched with any existing clock, leading to an inaccurate clock tree.

Port over the v5.8-rc1 state of the function to fix this.

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

net: phy: port phy_interface_is_rgmii() from kernel ...

and remove duplicates from other drivers

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

update list.h from Linux-5.7 ...

This updates include/linux/list.h from Linux-5.7.

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

Merge branch 'for-next/powerpc'

phy: drop of_phy_simple_xlate() stub ...

The function of_phy_simple_xlate() is not used.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

module.h: split out the EXPORT_SYMBOL into export.h ...

Do as Linux commit f501693

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

iopoll: Introduce read_poll_timeout ...

barebox adoption of Linux commit:

| commit 5f5323a
| Author: Dejin Zheng <zhengdejin5@gmail.com>
| Date:   Mon Mar 23 23:05:51 2020 +0800
|
|     iopoll: introduce read_poll_timeout macro
|
|     this macro is an extension of readx_poll_timeout macro. the accessor
|     function op just supports only one parameter in the readx_poll_timeout
|     macro, but this macro can supports multiple variable parameters for
|     it. so functions like phy_read(struct phy_device *phydev, u32 regnum)
|     and phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum) can
|     also use this poll timeout core. and also expand it can sleep some time
|     before read operation.
|
|     Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com>
|     Signed-off-by: David S. Miller <davem@davemloft.net>

Also, implement readx_poll_timeout using read_poll_timeout.

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

Merge branch 'for-next/pwm'

Merge branch 'for-next/misc'

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: migrate to SPDX-License-Identifier use ...

Some of these are a product of source sync with Linux, the other were
done with macro assistance by searching for /later/, deleting license text,
adding appropriate SPDX-License-Identifier and manual post-review.

Devices without a license indicated where assumed GPL-2.0-only according
with the project's license.

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

include: linux/kernel.h: port DIV_ROUND_CLOSEST_ULL definition ...

We already have DIV_ROUND_CLOSEST, but no DIV_ROUND_CLOSEST_ULL.
Import the latter for use by later commits.

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

clk: add clk_unregister stub ...

Make kernel clk driver import a tiny bit more convenient by allowing
clk_unregister calls and control flow to remain as is.

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

clk: implement clk_register_fixed_rate ...

We lack a way to instantiate a fixed clock while specifying a parent.
This is used in the at91 clock code sync with upstream in a later
commit, so prepare by porting clk_register_fixed_rate.

It's based on the Linux commit of the same name with the difference that
it doesn't use (and thus doesn't require) a struct device_d * as first
parameter.

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

libfdt: update <linux/libfdt.h> and <linux/libfdt_env.h> to Linux 5.7-rc1 ...

Fix the relative include path in <linux/libfdt.h>

Including <linux/kernel.h> is too much. <linux/limits.h> is enough
for INT_MAX.

Define INT32_MAX and UINT32_MAX in the same way as Linux does.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: include: remove unused <asm/processor.h> ...

File has been in source tree for 17 years and is unused.
Drop it. The only definition we might want out of the file is
cpu_relax(), which we already open code as barrier() with a comment in a
couple of places. Move the definition to <linux/barebox-wrapper.h>
and drop the file altogether.

No functional change.

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

net: phy: Add missing inline to function ...

Add missing inline to static inline no-op wrapper function.

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

PWM: add support for STM32 ...

This driver adds support for PWM driver on STM32 platform
based on the Linux v5.4 support.

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

Merge branch 'for-next/stm32'

reset: add stub for device_reset when CONFIG_RESET_CONTROLLER=n ...

Users of an optional device_reset that have CONFIG_RESET_CONTROLLER=n
will trigger compilation errors. Add a static inline stub to fix it.

[ Note: device_reset is unused and unusable because we have no reset
  controller implementing .reset. It's available in Linux though and
  apparently useful for shared resets, so it's left in ]

Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

phy: introduce phy_get_by_index ...

The upstream (v5.6-rc1) device tree node of the stm32mp157c-dk2's OHCI
has a phys property, but not phy-names. We have no API to reference
such a phy easily (passing NULL isn't allowed). Add one.

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

phy: remove unused init_data parameter ...

Linux has since migrated to a new lookup API that lacks the init_data
parameter. As it's unused in barebox, follow suit.

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

Merge branch 'for-next/misc'