linux-kernel - [PATCH v3 4/5] arm64: dts: qcom: sm8150: Add GPU speedbin support

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Message-Id: <20230331-topic-konahana_speedbin-v3-4-2dede22dd7f7@linaro.org>
Date:   Fri, 31 Mar 2023 03:14:52 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH v3 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>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.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 880483922f22..e4230877555d 100644
--- a/arch/arm64/boot/dts/qcom/sm8150.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8150.dtsi
@@ -952,6 +952,17 @@ 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";
@@ -2169,44 +2180,52 @@ 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>;
 				};
 			};
 		};

-- 
2.40.0