arm64: dts: qcom: sm8250: Add GPU speedbin support

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@somainline.org> # On Sony Xperia 5 II (speed bin 0x7)
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230331-topic-konahana_speedbin-v3-5-2dede22dd7f7@linaro.org

diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
index c16c4231cbfa0e413771552fb53b9b7de24e2163..7bea916900e2997f6a1d04b62506aa68c2d37da4 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
@@ -960,6 +960,18 @@
                        #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>;
@@ -2550,49 +2562,58 @@
 
                        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 = <0xa>;
                                };
 
                                opp-587000000 {
                                        opp-hz = /bits/ 64 <587000000>;
                                        opp-level = <RPMH_REGULATOR_LEVEL_NOM>;
+                                       opp-supported-hw = <0xb>;
                                };
 
                                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>;
                                };
                        };
                };