Add operating points for running the Cortex-A76 CPU cores on R-Car V4H
at various speeds, up to the Normal (1.7 GHz) performance mode.
Based on a patch in the BSP by Tho Vu.
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
An operating point for the High Performance mode (1.8 GHz) is not added,
as it is not yet supported by the clock driver, and thus was not tested.
---
arch/arm64/boot/dts/renesas/r8a779g0.dtsi | 31 +++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
index 9cbe337220ed4dfc..45d8d927ad2642f3 100644
--- a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
@@ -14,6 +14,33 @@ / {
#address-cells = <2>;
#size-cells = <2>;
+ cluster0_opp: opp-table-0 {
+ compatible = "operating-points-v2";
+ opp-shared;
+
+ opp-500000000 {
+ opp-hz = /bits/ 64 <500000000>;
+ opp-microvolt = <825000>;
+ clock-latency-ns = <500000>;
+ };
+ opp-1000000000 {
+ opp-hz = /bits/ 64 <1000000000>;
+ opp-microvolt = <825000>;
+ clock-latency-ns = <500000>;
+ };
+ opp-1500000000 {
+ opp-hz = /bits/ 64 <1500000000>;
+ opp-microvolt = <825000>;
+ clock-latency-ns = <500000>;
+ };
+ opp-1700000000 {
+ opp-hz = /bits/ 64 <1700000000>;
+ opp-microvolt = <825000>;
+ clock-latency-ns = <500000>;
+ opp-suspend;
+ };
+ };
+
cpus {
#address-cells = <1>;
#size-cells = <0>;
@@ -47,6 +74,7 @@ a76_0: cpu@0 {
enable-method = "psci";
cpu-idle-states = <&CPU_SLEEP_0>;
clocks = <&cpg CPG_CORE R8A779G0_CLK_Z0>;
+ operating-points-v2 = <&cluster0_opp>;
};
a76_1: cpu@100 {
@@ -58,6 +86,7 @@ a76_1: cpu@100 {
enable-method = "psci";
cpu-idle-states = <&CPU_SLEEP_0>;
clocks = <&cpg CPG_CORE R8A779G0_CLK_Z0>;
+ operating-points-v2 = <&cluster0_opp>;
};
a76_2: cpu@10000 {
@@ -69,6 +98,7 @@ a76_2: cpu@10000 {
enable-method = "psci";
cpu-idle-states = <&CPU_SLEEP_0>;
clocks = <&cpg CPG_CORE R8A779G0_CLK_Z0>;
+ operating-points-v2 = <&cluster0_opp>;
};
a76_3: cpu@10100 {
@@ -80,6 +110,7 @@ a76_3: cpu@10100 {
enable-method = "psci";
cpu-idle-states = <&CPU_SLEEP_0>;
clocks = <&cpg CPG_CORE R8A779G0_CLK_Z0>;
+ operating-points-v2 = <&cluster0_opp>;
};
idle-states {
--
2.25.1
