[PATCH 0/7] Add reset support to MT6589 wdt and remove fallback compatibles

[Akari Tsuyukusa]

This series adds TOPRGU reset controller support to the MT6589 watchdog
and removes the use of "mediatek,mt6589-wdt" as the fallback compatible
from many other MediaTek SoCs.

Many SoCs have been using "mediatek,mt6589-wdt" as the fallback.
However, they are not compatible with the MT6589's reset register.

To add reset support to MT6589 wdt and resolve this problem safely,
the series proceeds step by step:

 1. Add explicit driver entries for the affected SoCs,
    so they can be matched directly.
 2. Extend the dt-binding to accept the SoC-specific compatibles while
    still allowing the old fallback form.
 3. Drop the mt6589 fallback from all in-tree DTS.
 4. Remove the fallback from the dt-binding.
 5. Add the MT6589 reset dt-binding header.
 6. Assign reset data exclusively to the mt6589-wdt entry.
 7. Add #reset-cells to the MT6589 to enable TOPRGU reset controller.


Akari Tsuyukusa (7):
  watchdog: mtk_wdt: add explicit compatibles for SoCs using mt6589
    fallback
  dt-bindings: watchdog: mediatek,mtk-wdt: add compatibles for all SoCs
  arm/arm64: dts: mediatek: drop mt6589 fallback from watchdog
  dt-bindings: watchdog: mediatek,mtk-wdt: remove mt6589 fallback items
  dt-bindings: reset: Add bindings for MediaTek MT6589 reset controller
  watchdog: mtk_wdt: add reset controller support for MT6589
  arm: dts: mediatek: mt6589: add reset support for wdt

 .../bindings/watchdog/mediatek,mtk-wdt.yaml   | 26 ++++++++-----------
 arch/arm/boot/dts/mediatek/mt2701.dtsi        |  3 +--
 arch/arm/boot/dts/mediatek/mt6572.dtsi        |  2 +-
 arch/arm/boot/dts/mediatek/mt6582.dtsi        |  2 +-
 arch/arm/boot/dts/mediatek/mt6589.dtsi        |  1 +
 arch/arm/boot/dts/mediatek/mt7623.dtsi        |  3 +--
 arch/arm/boot/dts/mediatek/mt7629.dtsi        |  3 +--
 arch/arm64/boot/dts/mediatek/mt6797.dtsi      |  2 +-
 arch/arm64/boot/dts/mediatek/mt7622.dtsi      |  3 +--
 arch/arm64/boot/dts/mediatek/mt8173.dtsi      |  3 +--
 arch/arm64/boot/dts/mediatek/mt8365.dtsi      |  2 +-
 arch/arm64/boot/dts/mediatek/mt8516.dtsi      |  3 +--
 drivers/watchdog/mtk_wdt.c                    | 18 ++++++++++++-
 include/dt-bindings/reset/mt6589-resets.h     | 25 ++++++++++++++++++
 14 files changed, 64 insertions(+), 32 deletions(-)
 create mode 100644 include/dt-bindings/reset/mt6589-resets.h

-- 
2.54.0