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Tue, 08 Sep 2026 10:44:23 -0700 (PDT) From: Luca Leonardo Scorcia To: linux-mediatek@lists.infradead.org Cc: Luca Leonardo Scorcia , Wim Van Sebroeck , Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Philipp Zabel , linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v5 1/8] watchdog: mediatek: Add wdt/toprgu resets for mt6589 Date: Tue, 8 Sep 2026 19:38:28 +0200 Message-ID: <20260908174259.9009-2-l.scorcia@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260908174259.9009-1-l.scorcia@gmail.com> References: <20260908174259.9009-1-l.scorcia@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit According to Android sources, mt6589 has 12 reset bits in the WDT_SWSYSRST register. Populate toprgu_sw_rst_num to allow toprgu resets in device trees of the many compatible devices. Signed-off-by: Luca Leonardo Scorcia --- drivers/watchdog/mtk_wdt.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/watchdog/mtk_wdt.c b/drivers/watchdog/mtk_wdt.c index d9c30e4c80e3..d609f0fa35e3 100644 --- a/drivers/watchdog/mtk_wdt.c +++ b/drivers/watchdog/mtk_wdt.c @@ -64,6 +64,7 @@ #define DRV_NAME "mtk-wdt" #define DRV_VERSION "1.0" +#define MT6589_TOPRGU_SW_RST_NUM 12 #define MT7988_TOPRGU_SW_RST_NUM 24 static bool nowayout = WATCHDOG_NOWAYOUT; @@ -88,6 +89,10 @@ static const struct mtk_wdt_data mt2712_data = { .toprgu_sw_rst_num = MT2712_TOPRGU_SW_RST_NUM, }; +static const struct mtk_wdt_data mt6589_data = { + .toprgu_sw_rst_num = MT6589_TOPRGU_SW_RST_NUM, +}; + static const struct mtk_wdt_data mt6735_data = { .toprgu_sw_rst_num = MT6735_TOPRGU_RST_NUM, }; @@ -493,7 +498,7 @@ static int mtk_wdt_resume(struct device *dev) static const struct of_device_id mtk_wdt_dt_ids[] = { { .compatible = "mediatek,mt2712-wdt", .data = &mt2712_data }, - { .compatible = "mediatek,mt6589-wdt" }, + { .compatible = "mediatek,mt6589-wdt", .data = &mt6589_data }, { .compatible = "mediatek,mt6735-wdt", .data = &mt6735_data }, { .compatible = "mediatek,mt6795-wdt", .data = &mt6795_data }, { .compatible = "mediatek,mt7986-wdt", .data = &mt7986_data }, -- 2.43.0