In the original code, I wrote a custom pin muxing parser but the
upstream device trees wouldn't accept something like that so it would
have complicated mergine the device tree files.

Use the standard device tree format with function and groups:

	pinmux1: pinmux1 {
		function = "f_gpio1";
		groups = "grp_1", "grp_3";
	};

Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>

This is the first wave of MediaTek changes for this merge window. We
also expect to be sending another decent-sized pull request later for
the backlog of patches that are currently waiting on dependencies or
need little more time for review.

* Fixes for cargo-culted issues in mach-mediatek init.c files.
* Some consistency cleanups of recently added Genio boards (510/700/1200).
* Some pinctrl improvements to support newer MediaTek SOCs (mt8189 compatible).
* New devicetree and config for Genio 520/720 EVK boards (can boot to eMMC or SD).
* New CPU-specific functions to read vendor-specific CPU info at runtime.

The U_BOOT_DRIVER macro creates a list of drivers used at link time, and
all entries here must be unique. This in turn means that all entries in
the code should also be unique in order to not lead to build failures
later with unexpected build combinations. Typically, the problem we have
here is when a driver is obviously based on another driver and didn't
update this particular field and so while the name field reflects
something unique the linker entry itself is not. In a few places this
provides a more suitable string name as well, however.

Reviewed-by: Marek Vasut <marek.vasut+usb@mailbox.org>
Reviewed-by: Svyatoslav Ryhel <clamor95@gmail.com> # Tegra
Reviewed-by: Peter Robinson <pbrobinson@gmail.com>
Reviewed-by: Heiko Schocher <hs@nabladev.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>

Set the get_pinconf functions for the mt8189 pinctrl driver. This will
append pinconf bias info to the output of the pinmux status command.
This is useful for debugging pin configuration issues.

Reviewed-by: Macpaul Lin <macpaul.lin@mediatek.com>
Link: https://patch.msgid.link/20260330-pinctrl-mtk-fix-mt8189-v2-4-05a737ec623d@baylibre.com
Signed-off-by: David Lechner <dlechner@baylibre.com>

Add functionality to be able to print pin bias settings along with the
pinmux setting.

This can be useful to debug why pins might not be working correctly.

Reviewed-by: Macpaul Lin <macpaul.lin@mediatek.com>
Link: https://patch.msgid.link/20260330-pinctrl-mtk-fix-mt8189-v2-3-05a737ec623d@baylibre.com
Signed-off-by: David Lechner <dlechner@baylibre.com>

Fix setting pinconf bias for MT8189.

Using mtk_pinconf_bias_set_v1() was wrong because MT8189 does not have
PULLEN/PULLSEL registers. It has PU and PD registers for most pins.
MSDC pins need special handling since they have PUPD/R1/R0 registers.
I2C pins need special handling since they have PU/PD/RSEL registers.
New groups are added for MSDC and I2C pins and the bias_set callback
is now set appropriately for all groups.

A new table is needed for the RSEL registers since those were missing.

Some new macros are introduced to avoid repeating the same info many
times in MTK_TYPED_PIN(). This also fixes the semantically incorrect
use of DRV_GRPX for the IO_TYPE_GRPX field.

Reviewed-by: Macpaul Lin <macpaul.lin@mediatek.com>
Link: https://patch.msgid.link/20260330-pinctrl-mtk-fix-mt8189-v2-2-05a737ec623d@baylibre.com
Signed-off-by: David Lechner <dlechner@baylibre.com>

Add a new PINCTRL_PIN_REG_RSEL register type and a new function
mtk_pinconf_bias_set_pu_pd_rsel() to handle setting it.

Some MediaTek SoCs have a pin configuration register called RSEL that
sets the resistance value for bias pullup/pulldown.

Link: https://patch.msgid.link/20260330-pinctrl-mtk-fix-mt8189-v2-1-05a737ec623d@baylibre.com
Signed-off-by: David Lechner <dlechner@baylibre.com>

As exposed by "make randconfig", we have an issue with the dependencies
for PINCTRL_TH1520. It really needs to depend on PINCTRL_GENERIC rather
than select it, and PINCTRL_GENERIC in turn already depends on
PINCTRL_FULL.

Signed-off-by: Tom Rini <trini@konsulko.com>

Commit f4df9f53b7a9 ("pinctrl: mediatek: Bind gpio while binding pinctrl")
refactored pinctrl-mtk-common.c and the SoC-specific drivers to register
the gpiochip during the bind phase instead of probe. As part of this
change, each SoC driver must implement a bind callback.

The drivers recently added for mt8188, mt8189, mt8195 and mt8365 do not
define this callback, which prevents the gpiochip from being registered
properly.

Add the missing bind callback to these drivers.

Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Link: https://patch.msgid.link/20260312-pinctrl-mtk-bind-gpio-v1-1-21b8968902ed@baylibre.com
Signed-off-by: David Lechner <dlechner@baylibre.com>