linux-kernel - Re: [PATCH] arm64: dts: mediatek: mt8186: Fix supported-hw mask for GPU OPPs

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Message-ID: <9aec2480-5b49-4fd0-8ad0-9fd87c865630@gmail.com>
Date: Mon, 2 Sep 2024 18:07:06 +0200
From: Matthias Brugger <matthias.bgg@...il.com>
To: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
 linux-mediatek@...ts.infradead.org
Cc: robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
 wenst@...omium.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 kernel@...labora.com
Subject: Re: [PATCH] arm64: dts: mediatek: mt8186: Fix supported-hw mask for
 GPU OPPs



On 25/07/2024 09:22, AngeloGioacchino Del Regno wrote:
> The speedbin eFuse reads a value 'x' from 0 to 7 and, in order to
> make that compatible with opp-supported-hw, it gets post processed
> as BIT(x).
> 
> Change all of the 0x30 supported-hw to 0x20 to avoid getting
> duplicate OPPs for speedbin 4, and also change all of the 0x8 to
> 0xcf because speedbins different from 4 and 5 do support 900MHz,
> 950MHz, 1000MHz with the higher voltage of 850mV, 900mV, 950mV
> respectively.
> 
> Fixes: f38ea593ad0d ("arm64: dts: mediatek: mt8186: Wire up GPU voltage/frequency scaling")
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>

Patch got applied and is queued for v6.12 (v6.11-next/dts64 branch).
Somehow no email was send to inform about this.

Angelo, not sure if it's worth investigating what happened.

Regards,
Matthias

> ---
>   arch/arm64/boot/dts/mediatek/mt8186.dtsi | 12 ++++++------
>   1 file changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt8186.dtsi b/arch/arm64/boot/dts/mediatek/mt8186.dtsi
> index 4763ed5dc86c..d63a9defe73e 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8186.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8186.dtsi
> @@ -731,7 +731,7 @@ opp-850000000 {
>   		opp-900000000-3 {
>   			opp-hz = /bits/ 64 <900000000>;
>   			opp-microvolt = <850000>;
> -			opp-supported-hw = <0x8>;
> +			opp-supported-hw = <0xcf>;
>   		};
>   
>   		opp-900000000-4 {
> @@ -743,13 +743,13 @@ opp-900000000-4 {
>   		opp-900000000-5 {
>   			opp-hz = /bits/ 64 <900000000>;
>   			opp-microvolt = <825000>;
> -			opp-supported-hw = <0x30>;
> +			opp-supported-hw = <0x20>;
>   		};
>   
>   		opp-950000000-3 {
>   			opp-hz = /bits/ 64 <950000000>;
>   			opp-microvolt = <900000>;
> -			opp-supported-hw = <0x8>;
> +			opp-supported-hw = <0xcf>;
>   		};
>   
>   		opp-950000000-4 {
> @@ -761,13 +761,13 @@ opp-950000000-4 {
>   		opp-950000000-5 {
>   			opp-hz = /bits/ 64 <950000000>;
>   			opp-microvolt = <850000>;
> -			opp-supported-hw = <0x30>;
> +			opp-supported-hw = <0x20>;
>   		};
>   
>   		opp-1000000000-3 {
>   			opp-hz = /bits/ 64 <1000000000>;
>   			opp-microvolt = <950000>;
> -			opp-supported-hw = <0x8>;
> +			opp-supported-hw = <0xcf>;
>   		};
>   
>   		opp-1000000000-4 {
> @@ -779,7 +779,7 @@ opp-1000000000-4 {
>   		opp-1000000000-5 {
>   			opp-hz = /bits/ 64 <1000000000>;
>   			opp-microvolt = <875000>;
> -			opp-supported-hw = <0x30>;
> +			opp-supported-hw = <0x20>;
>   		};
>   	};
>