To help reduce power consumption, reduce the frequency of the CPU cores
when they sit idle by specifying their supported OPP entries.
Signed-off-by: Bryan Brattlof <bb@xxxxxx>
---
arch/arm64/boot/dts/ti/k3-am62p-wakeup.dtsi | 6 ++++
arch/arm64/boot/dts/ti/k3-am62p5-sk.dts | 9 ++++++
arch/arm64/boot/dts/ti/k3-am62p5.dtsi | 47 +++++++++++++++++++++++++++++
3 files changed, 62 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-am62p-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-wakeup.dtsi
index c71d9624ea277..8392c8cde2cd4 100644
--- a/arch/arm64/boot/dts/ti/k3-am62p-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62p-wakeup.dtsi
@@ -19,6 +19,11 @@ chipid: chipid@14 {
bootph-all;
};
+ opp_efuse_table: syscon@18 {
+ compatible = "ti,am62-opp-efuse-table", "syscon";
+ reg = <0x18 0x4>;
+ };
+
usb0_phy_ctrl: syscon@4008 {
compatible = "ti,am62-usb-phy-ctrl", "syscon";
reg = <0x4008 0x4>;
@@ -28,6 +33,7 @@ usb1_phy_ctrl: syscon@4018 {
compatible = "ti,am62-usb-phy-ctrl", "syscon";
reg = <0x4018 0x4>;
};
+
};
wkup_uart0: serial@2b300000 {
diff --git a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
index 6983ec1b57cbd..08956ac1eaead 100644
--- a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts
@@ -128,6 +128,15 @@ led-0 {
};
};
+ opp-table {
+ /* Add 1.4GHz OPP for am62p5-sk board. Requires VDD_CORE at 0v85 */
+ opp-1400000000 {
+ opp-hz = /bits/ 64 <1400000000>;
+ opp-supported-hw = <0x01 0x0004>;
+ clock-latency-ns = <6000000>;
+ };
+ };
+
tlv320_mclk: clk-0 {
#clock-cells = <0>;
compatible = "fixed-clock";
diff --git a/arch/arm64/boot/dts/ti/k3-am62p5.dtsi b/arch/arm64/boot/dts/ti/k3-am62p5.dtsi
index 41f479dca4555..140587d02e88e 100644
--- a/arch/arm64/boot/dts/ti/k3-am62p5.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62p5.dtsi
@@ -47,6 +47,7 @@ cpu0: cpu@0 {
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&l2_0>;
+ operating-points-v2 = <&a53_opp_table>;
clocks = <&k3_clks 135 0>;
};
@@ -62,6 +63,7 @@ cpu1: cpu@1 {
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&l2_0>;
+ operating-points-v2 = <&a53_opp_table>;
clocks = <&k3_clks 136 0>;
};
@@ -77,6 +79,7 @@ cpu2: cpu@2 {
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&l2_0>;
+ operating-points-v2 = <&a53_opp_table>;
clocks = <&k3_clks 137 0>;
};
@@ -92,10 +95,54 @@ cpu3: cpu@3 {
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&l2_0>;
+ operating-points-v2 = <&a53_opp_table>;
clocks = <&k3_clks 138 0>;
};
};
+ a53_opp_table: opp-table {
+ compatible = "operating-points-v2-ti-cpu";
+ opp-shared;
+ syscon = <&opp_efuse_table>;
+
+ opp-200000000 {
+ opp-hz = /bits/ 64 <200000000>;
+ opp-supported-hw = <0x01 0x0007>;
+ clock-latency-ns = <6000000>;
+ };
+
+ opp-400000000 {
+ opp-hz = /bits/ 64 <400000000>;
+ opp-supported-hw = <0x01 0x0007>;
+ clock-latency-ns = <6000000>;
+ };
+
+ opp-600000000 {
+ opp-hz = /bits/ 64 <600000000>;
+ opp-supported-hw = <0x01 0x0007>;
+ clock-latency-ns = <6000000>;
+ };
+
+ opp-800000000 {
+ opp-hz = /bits/ 64 <800000000>;
+ opp-supported-hw = <0x01 0x0007>;
+ clock-latency-ns = <6000000>;
+ };
+
+ opp-1000000000 {
+ opp-hz = /bits/ 64 <1000000000>;
+ opp-supported-hw = <0x01 0x0006>;
+ clock-latency-ns = <6000000>;
+ };
+
+ opp-1250000000 {
+ opp-hz = /bits/ 64 <1250000000>;
+ opp-supported-hw = <0x01 0x0004>;
+ clock-latency-ns = <6000000>;
+ opp-suspend;
+ };
+ };
+
l2_0: l2-cache0 {
compatible = "cache";
cache-unified;
--
2.45.2
