diff mbox series

[v2,2/3] arm64: dts: qcom: sm8450: Add opp table support to PCIe

Message ID 1692192264-18515-3-git-send-email-quic_krichai@quicinc.com
State New
Headers show
Series PCI: qcom: Add support for OPP | expand

Commit Message

Krishna Chaitanya Chundru Aug. 16, 2023, 1:24 p.m. UTC
PCIe needs to choose the appropriate performance state of RPMH power
domain based upon the PCIe gen speed.

So let's add the OPP table support to specify RPMH performance states.

Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com>
---
 arch/arm64/boot/dts/qcom/sm8450.dtsi | 47 ++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/qcom/sm8450.dtsi b/arch/arm64/boot/dts/qcom/sm8450.dtsi
index 595533a..c77a683 100644
--- a/arch/arm64/boot/dts/qcom/sm8450.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8450.dtsi
@@ -1803,7 +1803,28 @@ 
 			pinctrl-names = "default";
 			pinctrl-0 = <&pcie0_default_state>;
 
+			operating-points-v2 = <&pcie0_opp_table>;
+
 			status = "disabled";
+
+			pcie0_opp_table: opp-table {
+				compatible = "operating-points-v2";
+
+				opp-2500000 {
+					opp-hz = /bits/ 64 <2500000>;
+					required-opps = <&rpmhpd_opp_low_svs>;
+				};
+
+				opp-5000000 {
+					opp-hz = /bits/ 64 <5000000>;
+					required-opps = <&rpmhpd_opp_low_svs>;
+				};
+
+				opp-8000000 {
+					opp-hz = /bits/ 64 <8000000>;
+					required-opps = <&rpmhpd_opp_nom>;
+				};
+			};
 		};
 
 		pcie0_phy: phy@1c06000 {
@@ -1915,7 +1936,33 @@ 
 			pinctrl-names = "default";
 			pinctrl-0 = <&pcie1_default_state>;
 
+			operating-points-v2 = <&pcie1_opp_table>;
+
 			status = "disabled";
+
+			pcie1_opp_table: opp-table {
+				compatible = "operating-points-v2";
+
+				opp-2500000 {
+					opp-hz = /bits/ 64 <2500000>;
+					required-opps = <&rpmhpd_opp_low_svs>;
+				};
+
+				opp-5000000 {
+					opp-hz = /bits/ 64 <5000000>;
+					required-opps = <&rpmhpd_opp_low_svs>;
+				};
+
+				opp-8000000 {
+					opp-hz = /bits/ 64 <8000000>;
+					required-opps = <&rpmhpd_opp_low_svs>;
+				};
+
+				opp-16000000 {
+					opp-hz = /bits/ 64 <16000000>;
+					required-opps = <&rpmhpd_opp_nom>;
+				};
+			};
 		};
 
 		pcie1_phy: phy@1c0f000 {