linux-kernel - [PATCH v2 4/5] arm64: dts: qcom: sm8150: Add GPU speedbin support

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: <20230120172233.1905761-5-konrad.dybcio@linaro.org>
Date:   Fri, 20 Jan 2023 18:22:32 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     linux-arm-msm@...r.kernel.org, andersson@...nel.org,
        agross@...nel.org, krzysztof.kozlowski@...aro.org
Cc:     marijn.suijten@...ainline.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 4/5] arm64: dts: qcom: sm8150: Add GPU speedbin support

SM8150 has (at least) two GPU speed bins. With the support added on the
driver side, wire up bin detection in the DTS to restrict lower-quality
SKUs from running at frequencies they were not validated at.

Tested-by: Marijn Suijten <marijn.suijten@...ainline.org> # On Sony Xperia 5 (speed bin 0x3)
Reviewed-by: Marijn Suijten <marijn.suijten@...ainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 arch/arm64/boot/dts/qcom/sm8150.dtsi | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8150.dtsi b/arch/arm64/boot/dts/qcom/sm8150.dtsi
index e3059f9b98de..1c7ee0cd816d 100644
--- a/arch/arm64/boot/dts/qcom/sm8150.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8150.dtsi
@@ -945,6 +945,17 @@ ethernet: ethernet@...00 {
 			status = "disabled";
 		};
 
+		qfprom: efuse@...000 {
+			compatible = "qcom,sm8150-qfprom", "qcom,qfprom";
+			reg = <0 0x00784000 0 0x8ff>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			gpu_speed_bin: gpu_speed_bin@133 {
+				reg = <0x133 0x1>;
+				bits = <5 3>;
+			};
+		};
 
 		qupv3_id_0: geniqup@...000 {
 			compatible = "qcom,geni-se-qup";
@@ -2145,44 +2156,52 @@ gpu: gpu@...0000 {
 
 			qcom,gmu = <&gmu>;
 
+			nvmem-cells = <&gpu_speed_bin>;
+			nvmem-cell-names = "speed_bin";
+
 			status = "disabled";
 
 			zap-shader {
 				memory-region = <&gpu_mem>;
 			};
 
-			/* note: downstream checks gpu binning for 675 Mhz */
 			gpu_opp_table: opp-table {
 				compatible = "operating-points-v2";
 
 				opp-675000000 {
 					opp-hz = /bits/ 64 <675000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_NOM_L1>;
+					opp-supported-hw = <0x2>;
 				};
 
 				opp-585000000 {
 					opp-hz = /bits/ 64 <585000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_NOM>;
+					opp-supported-hw = <0x3>;
 				};
 
 				opp-499200000 {
 					opp-hz = /bits/ 64 <499200000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_SVS_L2>;
+					opp-supported-hw = <0x3>;
 				};
 
 				opp-427000000 {
 					opp-hz = /bits/ 64 <427000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
+					opp-supported-hw = <0x3>;
 				};
 
 				opp-345000000 {
 					opp-hz = /bits/ 64 <345000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
+					opp-supported-hw = <0x3>;
 				};
 
 				opp-257000000 {
 					opp-hz = /bits/ 64 <257000000>;
 					opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
+					opp-supported-hw = <0x3>;
 				};
 			};
 		};
-- 
2.39.1