linux-kernel - Re: [PATCH RESEND v2] arm64: dts: mt8195-cherry-tomato: change watchdog reset boot flow

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Date: Tue, 23 Jan 2024 12:03:08 +0800
From: Chen-Yu Tsai <wenst@...omium.org>
To: Matthias Brugger <matthias.bgg@...il.com>, 
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: Hsin-Te Yuan <yuanhsinte@...omium.org>, Rob Herring <robh+dt@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org, 
	Nícolas F . R . A . Prado <nfraprado@...labora.com>
Subject: Re: [PATCH RESEND v2] arm64: dts: mt8195-cherry-tomato: change
 watchdog reset boot flow

+CC Nicolas

On Thu, Dec 28, 2023 at 6:57 PM Hsin-Te Yuan <yuanhsinte@...omium.org> wrote:
>
> The external output reset signal was originally disabled and sent from
> firmware. However, an unfixed bug in the firmware on tomato prevents
> the signal from being sent, causing the device to fail to boot. To fix
> this, enable external output reset signal to allow the device to reboot
> normally.
>
> Signed-off-by: Hsin-Te Yuan <yuanhsinte@...omium.org>

Friendly ping?

Also wondering if you folks hit this, or if you haven't triggered the
watchdog at all.

ChenYu

> ---
>
> Changes in v2:
> - Limit the effect only on tomato.
>
> ---
>  arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r1.dts | 4 ++++
>  arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r2.dts | 4 ++++
>  arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r3.dts | 4 ++++
>  3 files changed, 12 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r1.dts b/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r1.dts
> index 2d5e8f371b6d..a82d716f10d4 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r1.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r1.dts
> @@ -23,3 +23,7 @@ &sound {
>  &ts_10 {
>         status = "okay";
>  };
> +
> +&watchdog {
> +       /delete-property/ mediatek,disable-extrst;
> +};
> diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r2.dts b/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r2.dts
> index 2586c32ce6e6..2fe20e0dad83 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r2.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r2.dts
> @@ -43,3 +43,7 @@ &sound {
>  &ts_10 {
>         status = "okay";
>  };
> +
> +&watchdog {
> +       /delete-property/ mediatek,disable-extrst;
> +};
> diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r3.dts b/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r3.dts
> index f54f9477b99d..dd294ca98194 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r3.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r3.dts
> @@ -44,3 +44,7 @@ &sound {
>  &ts_10 {
>         status = "okay";
>  };
> +
> +&watchdog {
> +       /delete-property/ mediatek,disable-extrst;
> +};
> --
> 2.43.0.472.g3155946c3a-goog
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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