From: Neil Armstrong <neil.armstrong@linaro.org>
Date: Wed, 15 Jan 2025 13:44:00 +0000 (+0100)
Subject: arm64: dts: qcom: sm8650: add OPP table support to PCIe
X-Git-Tag: v6.16-rc1~97^2~20^2~115^2~138
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5cddecc3d1dce1e20bb64364cb6cd5d8edf376b3;p=thirdparty%2Fkernel%2Fstable.git

arm64: dts: qcom: sm8650: add OPP table support to PCIe

The PCIe bus interconnect path can be scaled depending on the
PCIe link established, add the OPP table with all the possible
link speeds and the associated power domain level.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250115-topic-sm8x50-upstream-dt-icc-update-v1-8-eaa8b10e2af7@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
---

diff --git a/arch/arm64/boot/dts/qcom/sm8650.dtsi b/arch/arm64/boot/dts/qcom/sm8650.dtsi
index ded6afd220a56..e6938d04c40ba 100644
--- a/arch/arm64/boot/dts/qcom/sm8650.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8650.dtsi
@@ -3241,6 +3241,8 @@
 
 			power-domains = <&gcc PCIE_0_GDSC>;
 
+			operating-points-v2 = <&pcie0_opp_table>;
+
 			iommu-map = <0     &apps_smmu 0x1400 0x1>,
 				    <0x100 &apps_smmu 0x1401 0x1>;
 
@@ -3271,6 +3273,45 @@
 
 			status = "disabled";
 
+			pcie0_opp_table: opp-table {
+				compatible = "operating-points-v2";
+
+				/* GEN 1 x1 */
+				opp-2500000 {
+					opp-hz = /bits/ 64 <2500000>;
+					required-opps = <&rpmhpd_opp_low_svs>;
+					opp-peak-kBps = <250000 1>;
+				};
+
+				/* GEN 1 x2 and GEN 2 x1 */
+				opp-5000000 {
+					opp-hz = /bits/ 64 <5000000>;
+					required-opps = <&rpmhpd_opp_low_svs>;
+					opp-peak-kBps = <500000 1>;
+				};
+
+				/* GEN 2 x2 */
+				opp-10000000 {
+					opp-hz = /bits/ 64 <10000000>;
+					required-opps = <&rpmhpd_opp_low_svs>;
+					opp-peak-kBps = <1000000 1>;
+				};
+
+				/* GEN 3 x1 */
+				opp-8000000 {
+					opp-hz = /bits/ 64 <8000000>;
+					required-opps = <&rpmhpd_opp_nom>;
+					opp-peak-kBps = <984500 1>;
+				};
+
+				/* GEN 3 x2 */
+				opp-16000000 {
+					opp-hz = /bits/ 64 <16000000>;
+					required-opps = <&rpmhpd_opp_nom>;
+					opp-peak-kBps = <1969000 1>;
+				};
+			};
+
 			pcieport0: pcie@0 {
 				device_type = "pci";
 				reg = <0x0 0x0 0x0 0x0 0x0>;
@@ -3380,6 +3421,8 @@
 
 			power-domains = <&gcc PCIE_1_GDSC>;
 
+			operating-points-v2 = <&pcie1_opp_table>;
+
 			iommu-map = <0     &apps_smmu 0x1480 0x1>,
 				    <0x100 &apps_smmu 0x1481 0x1>;
 
@@ -3410,6 +3453,52 @@
 
 			status = "disabled";
 
+			pcie1_opp_table: opp-table {
+				compatible = "operating-points-v2";
+
+				/* GEN 1 x1 */
+				opp-2500000 {
+					opp-hz = /bits/ 64 <2500000>;
+					required-opps = <&rpmhpd_opp_low_svs>;
+					opp-peak-kBps = <250000 1>;
+				};
+
+				/* GEN 1 x2 and GEN 2 x1 */
+				opp-5000000 {
+					opp-hz = /bits/ 64 <5000000>;
+					required-opps = <&rpmhpd_opp_low_svs>;
+					opp-peak-kBps = <500000 1>;
+				};
+
+				/* GEN 2 x2 */
+				opp-10000000 {
+					opp-hz = /bits/ 64 <10000000>;
+					required-opps = <&rpmhpd_opp_low_svs>;
+					opp-peak-kBps = <1000000 1>;
+				};
+
+				/* GEN 3 x1 */
+				opp-8000000 {
+					opp-hz = /bits/ 64 <8000000>;
+					required-opps = <&rpmhpd_opp_nom>;
+					opp-peak-kBps = <984500 1>;
+				};
+
+				/* GEN 3 x2 and GEN 4 x1 */
+				opp-16000000 {
+					opp-hz = /bits/ 64 <16000000>;
+					required-opps = <&rpmhpd_opp_nom>;
+					opp-peak-kBps = <1969000 1>;
+				};
+
+				/* GEN 4 x2 */
+				opp-32000000 {
+					opp-hz = /bits/ 64 <32000000>;
+					required-opps = <&rpmhpd_opp_nom>;
+					opp-peak-kBps = <3938000 1>;
+				};
+			};
+
 			pcie@0 {
 				device_type = "pci";
 				reg = <0x0 0x0 0x0 0x0 0x0>;