PCIe needs to choose the appropriate performance state of RPMH power
domain and interconnect bandwidth based up on the PCIe gen speed.
Add the OPP table support to specify RPMH performance states and
interconnect peak bandwidth.
Signed-off-by: Krishna chaitanya chundru <quic_krichai@xxxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/sm8450.dtsi | 74 ++++++++++++++++++++++++++++++++++++
1 file changed, 74 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/sm8450.dtsi b/arch/arm64/boot/dts/qcom/sm8450.dtsi
index 6b1d2e0d9d14..662f2129f20d 100644
--- a/arch/arm64/boot/dts/qcom/sm8450.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8450.dtsi
@@ -1827,7 +1827,32 @@ pcie0: pcie@1c00000 {
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-peak-kBps = <250000 1>;
+ };
+
+ opp-5000000 {
+ opp-hz = /bits/ 64 <5000000>;
+ required-opps = <&rpmhpd_opp_low_svs>;
+ opp-peak-kBps = <500000 1>;
+ };
+
+ opp-8000000 {
+ opp-hz = /bits/ 64 <8000000>;
+ required-opps = <&rpmhpd_opp_nom>;
+ opp-peak-kBps = <984500 1>;
+ };
+ };
+
};
pcie0_phy: phy@1c06000 {
@@ -1938,7 +1963,56 @@ pcie1: pcie@1c08000 {
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";
+
+ /* GEN 1x1 */
+ opp-2500000 {
+ opp-hz = /bits/ 64 <2500000>;
+ required-opps = <&rpmhpd_opp_low_svs>;
+ opp-peak-kBps = <250000 1>;
+ };
+
+ /* GEN 1x2 GEN 2x1 */
+ opp-5000000 {
+ opp-hz = /bits/ 64 <5000000>;
+ required-opps = <&rpmhpd_opp_low_svs>;
+ opp-peak-kBps = <500000 1>;
+ };
+
+ /* GEN 2x2 */
+ opp-10000000 {
+ opp-hz = /bits/ 64 <10000000>;
+ required-opps = <&rpmhpd_opp_low_svs>;
+ opp-peak-kBps = <1000000 1>;
+ };
+
+ /* GEN 3x1 */
+ opp-8000000 {
+ opp-hz = /bits/ 64 <8000000>;
+ required-opps = <&rpmhpd_opp_nom>;
+ opp-peak-kBps = <984500 1>;
+ };
+
+ /* GEN 3x2 GEN 4x1 */
+ opp-16000000 {
+ opp-hz = /bits/ 64 <16000000>;
+ required-opps = <&rpmhpd_opp_nom>;
+ opp-peak-kBps = <1969000 1>;
+ };
+
+ /* GEN 4x2 */
+ opp-32000000 {
+ opp-hz = /bits/ 64 <32000000>;
+ required-opps = <&rpmhpd_opp_nom>;
+ opp-peak-kBps = <3938000 1>;
+ };
+ };
+
};
pcie1_phy: phy@1c0e000 {
--
2.42.0
