Re: [PATCH 3/6] arm64: dts: mediatek: mt8183: Add mediatek,gicr-save-quirk

[Marc Zyngier <maz@kernel.org>]

On Thu, 11 May 2023 23:05:37 +0100,
Douglas Anderson <dianders@chromium.org> wrote:
> 
> Firmware shipped on mt8183 Chromebooks is affected by the GICR
> save/restore issue as described by the patch ("dt-bindings:
> interrupt-controller: arm,gic-v3: Add quirk for Mediatek SoCs w/
> broken FW"). Add the quirk property.
> 
> Fixes: e526c9bc11f8 ("arm64: dts: Add Mediatek SoC MT8183 and evaluation board dts and Makefile")
> Signed-off-by: Douglas Anderson <dianders@chromium.org>
> ---
> 
>  arch/arm64/boot/dts/mediatek/mt8183.dtsi | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
> index 5169779d01df..39545172fce5 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
> @@ -709,6 +709,7 @@ gic: interrupt-controller@c000000 {
>  			      <0 0x0c400000 0 0x2000>,   /* GICC */
>  			      <0 0x0c410000 0 0x1000>,   /* GICH */
>  			      <0 0x0c420000 0 0x2000>;   /* GICV */
> +			mediatek,gicr-save-quirk;

Is that something you can safely generalise at the SoC level? Are
these SoC solely used on Chromebooks, and/or without any hope of
seeing any alternative FW being already in use?

	M.

-- 
Without deviation from the norm, progress is not possible.