[v6,0/8] MediaTek pinctrl DT binding cleanup and MT6735 pinctrl support

From: Yassine Oudjana <y.oudjana@protonmail.com>

These patches are part of a larger effort to support the MT6735 SoC family in
mainline Linux. More patches (unsent or sent and pending review or revision) can
be found here[1].

This series adds a driver for the pin controller found on the MediaTek MT6735
and MT6735M SoCs. The two differ in the last 6 physical pins, which are used
for MSDC2 on MT6735 but don't exist on MT6735M (since MSDC2 doesn't exist on it
to begin with). In preparation to document DT bindings for this pin controller,
the existing documents for MT67xx SoCs are combined into one in order to
eliminate duplicate property definitions and standardize pin configuration node
names. Necessary cleanup is done along the way.

[1] https://gitlab.com/mt6735-mainline/linux/-/commits/mt6735-staging

Changes since v5:
 - Revise and fix all register bits for all group register types (IES, SMT,
   RDSEL, TDSEL, PUPD_R0_R1, PULLEN and PULLSEL).
 - Add pull_type array.
 - Use proper getters/setters for bias and drive.
 - Add minItems for MT6795 interrupts.
Changes since v4:
 - Remove patches that were applied previously.
 - Define interrupts items for each variant (bringing back maxItems: 1 to the top
   level definition then adding maxItems: 2 under the MT6795 condition causes a
   dt_binding_check error for some reason)
 - Move example changes to the patch they belong to
 - Don't unnecessarily move the allOf block.
Changes since v3:
 - Improve interrupts description to make clear what sysirq means.
 - Set drive-strength constraints per variant.
 - Set maxItems for reg in MT6795.
 - Add blank lines between conditionals.
 - Add ref for both pinmux-node.yaml and pincfg-node.yaml.
 - Make pinctrl subnode-related changes in separate patch.
 - Fix up some pinctrl subnode property descriptions.
 - Add interrupts items descriptions to MT6765 and MT6735.Changes since v3:
 - Improve interrupts description to make clear what sysirq means.
 - Set drive-strength constraints per variant.
 - Set maxItems for reg in MT6795.
 - Add blank lines between conditionals.
 - Add ref for both pinmux-node.yaml and pincfg-node.yaml.
 - Make pinctrl subnode-related changes in separate patch.
 - Fix up some pinctrl subnode property descriptions.
 - Add interrupts items descriptions to MT6765 and MT6735.
Changes since v2:
 - Add interrupt descriptions.
 - Change interrupts property item limits.
 - Move pinmux examples from node description to example dts.
 - Properly add myself as maintainer for MT6735 pinctrl driver and DT bindings
   document.
 - Remove tabs from a few defines in pinctrl-mt6735.c.
Changes since v1:
 - Combine other documents into existing mediatek,mt6779-pinctrl.yaml
   instead of creating a new document with wild card in its name.
 - Split first patch into smaller patches focused on specific changes.
 - Remove syscon compatible from MT6779 DT to avoid a check error.
 - Fix interrupt count for MT6795.

Yassine Oudjana (8):
  dt-bindings: pinctrl: mediatek,mt6779-pinctrl: Pull pinctrl node
    changes from MT6795 document
  dt-bindings: pinctrl: mediatek,mt6779-pinctrl: Improve pinctrl subnode
    and property descriptions
  dt-bindings: pinctrl: mediatek,mt6779-pinctrl: Add MT6795
  arm64: dts: mediatek: mt6797: Make pin configuration nodes follow DT
    bindings
  dt-bindings: pinctrl: mediatek,mt6779-pinctrl: Document MT6765 pin
    controller
  dt-bindings: pinctrl: mediatek: Add bindings for MT6735 pin controller
  dt-bindings: pinctrl: mediatek,mt6779-pinctrl: Document MT6735 pin
    controller
  pinctrl: mediatek: Add MT6735 pinctrl driver

 .../pinctrl/mediatek,mt6779-pinctrl.yaml      |  191 +-
 .../pinctrl/mediatek,mt6795-pinctrl.yaml      |  228 -
 MAINTAINERS                                   |    9 +
 arch/arm64/boot/dts/mediatek/mt6797.dtsi      |   20 +-
 drivers/pinctrl/mediatek/Kconfig              |    6 +
 drivers/pinctrl/mediatek/Makefile             |    1 +
 drivers/pinctrl/mediatek/pinctrl-mt6735.c     |  880 ++++
 drivers/pinctrl/mediatek/pinctrl-mtk-mt6735.h | 3993 +++++++++++++++++
 .../pinctrl/mediatek,mt6735-pinctrl.h         | 1148 +++++
 9 files changed, 6221 insertions(+), 255 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/pinctrl/mediatek,mt6795-pinctrl.yaml
 create mode 100644 drivers/pinctrl/mediatek/pinctrl-mt6735.c
 create mode 100644 drivers/pinctrl/mediatek/pinctrl-mtk-mt6735.h
 create mode 100644 include/dt-bindings/pinctrl/mediatek,mt6735-pinctrl.h

On Fri, Oct 11, 2024 at 2:05 PM Yassine Oudjana
<yassine.oudjana@gmail.com> wrote:

> From: Yassine Oudjana <y.oudjana@protonmail.com>
>
> These patches are part of a larger effort to support the MT6735 SoC family in
> mainline Linux. More patches (unsent or sent and pending review or revision) can
> be found here[1].
>
> This series adds a driver for the pin controller found on the MediaTek MT6735
> and MT6735M SoCs. The two differ in the last 6 physical pins, which are used
> for MSDC2 on MT6735 but don't exist on MT6735M (since MSDC2 doesn't exist on it
> to begin with). In preparation to document DT bindings for this pin controller,
> the existing documents for MT67xx SoCs are combined into one in order to
> eliminate duplicate property definitions and standardize pin configuration node
> names. Necessary cleanup is done along the way.

Once Rob is happy with all binding patches, my plan is to merge all
except the DTS[I] changes to an immutable branch in the pin control
tree and then you can offer that as a base for the SoC tree if it's
needed for the DTS[I] files.

Yours,
Linus Walleij