Release v2020.03.0 ...

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

pinctrl-single: fix parsing of `pinctrl-single,bits` property ...

According to dts/Bindings/pinctrl/pinctrl-single.txt:113 the correct order of
parameters is <offset, value, mask>.

Fixes: f7e0cae43 ('pinctrl-single: Handle "pinctrl-single,function-mask" dt property')
Signed-off-by: Peter Mamonov <pmamonov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb: Add extra delay for device scan ...

Since b1d9837182, detection of various USB flash drives stopped working.
While the changes itself look correct, probably the HUB requires some
"recovery time" between the GET_STATUS commands in order to be able to
detect devices.

Our configuration: i.MX6ULL (USB-OTG) with only one port on the root
HUB. This port is connected to a Microchip USB4916 hub (permanently
attached). The USB4916 is configured with it's power on defaults which
means that bPwrOn2PwrGood is set to the maximum (0xFF = 510 ms).

Fixes: b1d9837182 ("usb: Change power-on / scanning timeout handling")
Signed-off-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Documentation: blspec: drop documentation of devicetree-overlay ...

The devicetree-overlay key is part of the official Boot Loader
Specification. There is no need to document it in Barebox, again.

Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Documentation: blspec: update link to Boot Loader Specification ...

There is a big warning on the linked page that the page is obsolete and
a link to the current version of the Boot Loader Specification. The
Barebox documentation shall directly link to the current version of the
specification.

Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

USB: MUSB: defer driver probes where necessary ...

Kernel commit 0782e8572c ("ARM: dts: Probe am335x musb with ti-sysc")
which we pulled in during the v2020.02.0 dts/ sync moved the USB nodes
to be under a ti-sysc bus instead of ti,am33xx-usb.

This new probe order broke am335x USB under barebox, because the MUSB
drivers couldn't cope with the now different device probe order.

Pepper some -EPROBE_DEFER around to make USB work again.

Fixes: 574eed3f6f ("dts: update to v5.5-rc1")
Reported-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Tested-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

USB: MUSB: PHY: scrap singleton am335x_get_usb_phy() ...

am335x_get_usb_phy() retrieves the last probed USB phy. On the BeagleBone
with both PHYs enabled, this means that dependent on probe order, both
MUSB instances could end up with the same PHY.

Remove the global variable and have the MUSB driver parse the "phys"
property instead.

The cleaner way to achieve this would be to migrate phy-am335x.c
and phy-am335x-control.c to the generic phy framework and have MUSB use
of_phy_get, alas, even Linux hasn't done this so far and we need
a short patch for master anyway, thus just do it the easy way.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Tested-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Documentation: boards: stm32mp: document eMMC partition layout ...

For eMMC, the boot partitions are used for FSBL instead of having
these two partitions in the user area, like with SD-Cards.
Document this.

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

Merge branch 'for-master/imx-external-nand'

commands: boot: fixup create boot entries on demand ...

Don't try other boot entries if one succeeds. This is the behavior
before the change, thus reinstate it.

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

ARM: i.MX: external NAND boot: Fix passing boarddata ...

We used to pass a device tree pointer to
imx*_barebox_boot_nand_external(). This no longer works since we compile
barebox with -fPIE.

The problem is that we only have the first 2KiB of the image available
when we start from NAND. The pointer to the device tree is not valid
yet. This hasn't been a problem because the pointer is only used later
when we have the full image in SDRAM. With -fPIE though the actual
pointer is derived indirectly through another pointer, and that pointer
to the pointer is also not valid which causes an invalid pointer to
the device tree later.

This is solved by splitting the NAND boot functions up into two
functions. With imx*_nand_relocate_to_sdram() the board code relocates
the image out of the NFC SRAM into SDRAM. From that point on the device
tree pointer can be accessed and the board can load the image using
imx*_nand_load_image() and can afterwards pass control to barebox
passing whatever device tee pointer it likes.

Fixes: b0348d677b ("ARM: Compile with -fPIE")
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: i.MX: external NAND boot: Leave icache disabled ...

It seems running from the NFC SRAM doesn't work with the instruction
cache enabled, it leads to corruptions on the i.MX27. We stumbled upon
this earlier and the solution at that time was to disable the
instruction cache in the NAND boot code. It is, however, more reliable
to just not enable the instruction cache in the first place.
This is not particularly nice as we have to ifdef this in generic code,
duplicate arm_cpu_lowlevel_init(), or call arm_cpu_lowlevel_init() later
when we are out of NFC SRAM. From the different bad solutions I chose
to ifdef the instruction cache away. It will be enabled later in the
common cache functions.

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

ARM: i.MX: external NAND boot: remove unnecessary arguments from imx*_nand_load_image ...

The imx*_nand_load_image functions all take dest, size, nfc_base and
pagesize_2k arguments. All of these can be determined inside the functions,
so remove them.

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

net: designware: eqos: stm32: drop no longer needed syscfg-clk ...

The upstream device tree no longer lists "syscfg-clk" and the syscon node
contains a clocks property that the barebox syscon driver now
automatically clocks before access.

Thus drop the requirement that "syscfg-clk" is specified.

Fixes: 4aaceef58 ("dts: update to v5.6-rc1")
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mfd: syscon: clock peripheral if specified in device tree ...

Linux supports a clocks property in syscon nodes to indicate that access
should only occur with the clock active.

Attach the clock to the regmap if found.

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

mfd: syscon: use regmap-mmio as backend ...

Linux supports a clocks property in syscon nodes to indicate that access
should only occur with the clock active. The new regmap-mmio supports
this, thus port syscon over, so it can make use of it in a later commit.

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

regmap: add support for regmap_init_mmio_clk ...

regmap-mmio is used in Linux for clocked memory mapped I/O regions.
Port it over, so we can more easily port drivers using it.

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

regmap: make internal.h a self-contained header ...

Follow up commit will add a new user for "internal.h".
Prepare the header for this.

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

ARM: dts: stm32mp: align barebox dtsi name with upstream ...

Upstream has split stm32mp157c.dtsi into three files:

- stm32mp157.dtsi: GPU, DSI and stm32mp153.dtsi
- stm32mp153.dtsi: 2x CAN, 2nd Cortex-A7 and stm32mp151.dtsi
- stm32mp151.dtsi: everything else

Have our barebox specific fixup file follow the new naming scheme.

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

scripts: imd: remove duplicate macro definitions ...

include/scripts/linux/kernel.h included via #include <linux/kernel.h>
later on already defines these three macros. Remove them here to avoid
the warnings about the duplicate macro definition.

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

scripts: define ALIGN(x) in scripts' <linux/kernel.h> ...

To make code sharing between utilities in scripts/ and barebox easier,
define ALIGN in the scripts/include/linux/kernel.h as well for
compatibility with the barebox include/linux/kernel.h.

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

gpiolib: use correct format specifier for ptrdiff_t ...

C99 specifies the 't' length modifier type for pointer difference.
barebox vsnprintf supports it, thus use it.

We are guaranteed sizeof(long) == sizeof(void *) in barebox, so this
doesn't make a difference in practice except that it silences
following GCC warning:

  ./drivers/gpio/gpiolib.c: In function 'gpioinfo_request':
  ./include/printk.h:77:43: warning: format '%ld' expects argument of
     type 'long int', but argument 3 has type 'int' [-Wformat=]
  ...
  ./barebox-stm32/drivers/gpio/gpiolib.c:89:3: note: in expansion of macro 'pr_err'
     89 |   pr_err("_gpio_request: gpio-%ld (%s) status %d\n",

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

ARM: i.MX Phytec phycore i.MX27: replace __naked with noinline ...

phytec_phycore_imx27_common_init() doesn't need to be __naked, because
the stack has already been setup. What we want to have though is the
noinline attribute to make sure phytec_phycore_imx27_common_init() is
indeed a separate function which is called with initialized stack.

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

ARM: i.MX Phytec phycard i.MX27: replace __naked with noinline ...

phytec_phycard_imx27_common_init() doesn't need to be __naked, because
the stack has already been setup. What we want to have though is the
noinline attribute to make sure phytec_phycard_imx27_common_init() is
indeed a separate function which is called with initialized stack.

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

ARM: i.MX Phytec phycard i.MX27: get fdt in common init function ...

No need to get the fdt pointer in the entry functions, we can do this
later.

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

clk: i.MX1: make locally used function static ...

mx1_clocks_init() is only used in one file, make it static.

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

ARM: i.MX: scb9328: Add missing machine protection ...

Make sure scb9328_devices_init() is only executed on the correct
machine.

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

Merge branch 'for-next/spdx'

Merge branch 'for-next/pwm'

Merge branch 'for-next/parameter'