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[14.13.71.96]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-84a4f23a600sm5092661b3a.6.2026.07.16.09.19.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Jul 2026 09:19:44 -0700 (PDT) From: Akari Tsuyukusa To: Wim Van Sebroeck , Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Philipp Zabel Cc: linux-watchdog@vger.kernel.org (open list:WATCHDOG DEVICE DRIVERS), devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS), linux-kernel@vger.kernel.org (open list:ARM/Mediatek SoC support), linux-arm-kernel@lists.infradead.org (moderated list:ARM/Mediatek SoC support), linux-mediatek@lists.infradead.org (moderated list:ARM/Mediatek SoC support), Roman Vivchar , Akari Tsuyukusa Subject: [PATCH 0/7] Add reset support to MT6589 wdt and remove fallback compatibles Date: Fri, 17 Jul 2026 01:19:16 +0900 Message-ID: <20260716161923.266315-1-akkun11.open@gmail.com> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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