Messages in this thread Patch in this message | | | From | Pin-yen Lin <> | Subject | [PATCH v5] arm64: dts: mt8173-elm: Switch to SMC watchdog | Date | Fri, 29 Jul 2022 13:32:54 +0800 |
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Switch to SMC watchdog because we need direct control of HW watchdog registers from kernel. The corresponding firmware was uploaded in https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/3405.
Signed-off-by: Pin-yen Lin <treapking@chromium.org> ---
Changes in v5: - Remove redundant new line.
Changes in v4: - Rename the watchdog node (smc_watchdog -> watchdog) - Correct the patch summary (mt8173-oak -> mt8173-elm)
Changes in v3: - Remove /delete-node/ and create a new node for SMC watchdog.
Changes in v2: - Move the modifications to mt8173-elm.dtsi and add some comments.
arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi b/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi index e21feb85d822..abe3140cfcc6 100644 --- a/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi @@ -161,6 +161,18 @@ hdmi_connector_in: endpoint { }; }; }; + + watchdog { + compatible = "arm,smc-wdt"; + }; +}; + +/* + * Disable the original MMIO watch dog and switch to the SMC watchdog, which + * operates on the same MMIO. + */ +&watchdog { + status = "disabled"; }; &mfg_async { -- 2.37.1.455.g008518b4e5-goog
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