Re: [PATCH v2 5/5] arm64: dts: qcom: sm8250: Add GPU speedbin support

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On 20/01/2023 19:22, Konrad Dybcio wrote:
SM8250 has (at least) four 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@xxxxxxxxxxxxxx> # On Sony Xperia 5 II (speed bin 0x7)
Reviewed-by: Marijn Suijten <marijn.suijten@xxxxxxxxxxxxxx>
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
---
  arch/arm64/boot/dts/qcom/sm8250.dtsi | 23 ++++++++++++++++++++++-
  1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
index 059c83003fb6..95f1a6afcd43 100644
--- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
@@ -981,6 +981,18 @@ ipcc: mailbox@408000 {
  			#mbox-cells = <2>;
  		};
+ qfprom: efuse@784000 {
+			compatible = "qcom,sm8250-qfprom", "qcom,qfprom";
+			reg = <0 0x00784000 0 0x8ff>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			gpu_speed_bin: gpu_speed_bin@19b {
+				reg = <0x19b 0x1>;
+				bits = <5 3>;
+			};
+		};
+
  		rng: rng@793000 {
  			compatible = "qcom,prng-ee";
  			reg = <0 0x00793000 0 0x1000>;
@@ -2576,49 +2588,58 @@ gpu: gpu@3d00000 {
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 670 Mhz */
  			gpu_opp_table: opp-table {
  				compatible = "operating-points-v2";
opp-670000000 {
  					opp-hz = /bits/ 64 <670000000>;
  					opp-level = <RPMH_REGULATOR_LEVEL_NOM_L1>;
+					opp-supported-hw = <0x6>;

opp-supported-hw = <0xa>; /* 3 & 1 */

  				};
opp-587000000 {
  					opp-hz = /bits/ 64 <587000000>;
  					opp-level = <RPMH_REGULATOR_LEVEL_NOM>;
+					opp-supported-hw = <0x7>;

opp-supported-hw = <0xb>; /* 3, 1, 0 */


  				};
opp-525000000 {
  					opp-hz = /bits/ 64 <525000000>;
  					opp-level = <RPMH_REGULATOR_LEVEL_SVS_L2>;
+					opp-supported-hw = <0xf>;
  				};
opp-490000000 {
  					opp-hz = /bits/ 64 <490000000>;
  					opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
+					opp-supported-hw = <0xf>;
  				};
opp-441600000 {
  					opp-hz = /bits/ 64 <441600000>;
  					opp-level = <RPMH_REGULATOR_LEVEL_SVS_L0>;
+					opp-supported-hw = <0xf>;
  				};
opp-400000000 {
  					opp-hz = /bits/ 64 <400000000>;
  					opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
+					opp-supported-hw = <0xf>;
  				};
opp-305000000 {
  					opp-hz = /bits/ 64 <305000000>;
  					opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
+					opp-supported-hw = <0xf>;
  				};
  			};
  		};

--
With best wishes
Dmitry




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