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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240725072243.173104-1-angelogioacchino.delregno@collabora.com>
Date: Thu, 25 Jul 2024 09:22:43 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: linux-mediatek@...ts.infradead.org
Cc: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	matthias.bgg@...il.com,
	angelogioacchino.delregno@...labora.com,
	wenst@...omium.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	kernel@...labora.com
Subject: [PATCH] arm64: dts: mediatek: mt8186: Fix supported-hw mask for GPU OPPs

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>
---
 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>;
 		};
 	};
 
-- 
2.45.2