From: Neil Armstrong <neil.armstrong@linaro.org>
Date: Wed, 15 Jan 2025 13:43:55 +0000 (+0100)
Subject: arm64: dts: qcom: sm8550: add OPP table support to PCIe
X-Git-Tag: v6.16-rc1~97^2~20^2~115^2~143
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0acd169330b81036aebd27c025b0a5bb8a77ea4b;p=thirdparty%2Fkernel%2Fstable.git

arm64: dts: qcom: sm8550: 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-v1-3-eaa8b10e2af7@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
---

diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi
index a04a405a3f78f..4b3c51fad9f19 100644
--- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
@@ -1897,8 +1897,49 @@
 			phys = <&pcie0_phy>;
 			phy-names = "pciephy";
 
+			operating-points-v2 = <&pcie0_opp_table>;
+
 			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>;
@@ -2023,8 +2064,56 @@
 			phys = <&pcie1_phy>;
 			phy-names = "pciephy";
 
+			operating-points-v2 = <&pcie1_opp_table>;
+
 			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>;