[PATCH v1 2/3] arm64: dts: qcom: sm8450: Add opp table support to PCIe

[Krishna chaitanya chundru <quic_krichai@xxxxxxxxxxx>]

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@xxxxxxxxxxx>
---
 arch/arm64/boot/dts/qcom/sm8450.dtsi | 47 ++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8450.dtsi b/arch/arm64/boot/dts/qcom/sm8450.dtsi
index 595533a..681ea9c 100644
--- a/arch/arm64/boot/dts/qcom/sm8450.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8450.dtsi
@@ -381,6 +381,49 @@
 		};
 	};
 
+	pcie0_opp_table: opp-table-pcie0 {
+		compatible = "operating-points-v2";
+
+		opp-2500000 {
+			opp-hz = /bits/ 64 <2500000>;
+			opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
+		};
+
+		opp-5000000 {
+			opp-hz = /bits/ 64 <5000000>;
+			opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
+		};
+
+		opp-8000000 {
+			opp-hz = /bits/ 64 <8000000>;
+			opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
+		};
+	};
+
+	pcie1_opp_table: opp-table-pcie1 {
+		compatible = "operating-points-v2";
+
+		opp-2500000 {
+			opp-hz = /bits/ 64 <2500000>;
+			opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
+		};
+
+		opp-5000000 {
+			opp-hz = /bits/ 64 <5000000>;
+			opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
+		};
+
+		opp-8000000 {
+			opp-hz = /bits/ 64 <8000000>;
+			opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
+		};
+
+		opp-16000000 {
+			opp-hz = /bits/ 64 <16000000>;
+			opp-level = <RPMH_REGULATOR_LEVEL_NOM>;
+		};
+	};
+
 	reserved_memory: reserved-memory {
 		#address-cells = <2>;
 		#size-cells = <2>;
@@ -1803,6 +1846,8 @@
 			pinctrl-names = "default";
 			pinctrl-0 = <&pcie0_default_state>;
 
+			operating-points-v2 = <&pcie0_opp_table>;
+
 			status = "disabled";
 		};
 
@@ -1915,6 +1960,8 @@
 			pinctrl-names = "default";
 			pinctrl-0 = <&pcie1_default_state>;
 
+			operating-points-v2 = <&pcie1_opp_table>;
+
 			status = "disabled";
 		};
 
-- 
2.7.4