@@ -56,55 +56,173 @@
#address-cells = <1>;
#size-cells = <1>;
+ cpu0_opp_table: opp_table0 {
+ compatible = "operating-points-v2";
+ opp-shared;
+
+ opp-480000000 {
+ opp-hz = /bits/ 64 <480000000>;
+ opp-microvolt = <840000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-600000000 {
+ opp-hz = /bits/ 64 <600000000>;
+ opp-microvolt = <840000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-720000000 {
+ opp-hz = /bits/ 64 <720000000>;
+ opp-microvolt = <840000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-864000000 {
+ opp-hz = /bits/ 64 <864000000>;
+ opp-microvolt = <840000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-912000000 {
+ opp-hz = /bits/ 64 <912000000>;
+ opp-microvolt = <840000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-1008000000 {
+ opp-hz = /bits/ 64 <1008000000>;
+ opp-microvolt = <840000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-1128000000 {
+ opp-hz = /bits/ 64 <1128000000>;
+ opp-microvolt = <840000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-1200000000 {
+ opp-hz = /bits/ 64 <1200000000>;
+ opp-microvolt = <840000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+ };
+
+ cpu1_opp_table: opp_table1 {
+ compatible = "operating-points-v2";
+ opp-shared;
+
+ opp-480000000 {
+ opp-hz = /bits/ 64 <480000000>;
+ opp-microvolt = <840000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-600000000 {
+ opp-hz = /bits/ 64 <600000000>;
+ opp-microvolt = <840000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-720000000 {
+ opp-hz = /bits/ 64 <720000000>;
+ opp-microvolt = <840000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-864000000 {
+ opp-hz = /bits/ 64 <864000000>;
+ opp-microvolt = <840000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-912000000 {
+ opp-hz = /bits/ 64 <912000000>;
+ opp-microvolt = <840000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-1008000000 {
+ opp-hz = /bits/ 64 <1008000000>;
+ opp-microvolt = <840000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-1128000000 {
+ opp-hz = /bits/ 64 <1128000000>;
+ opp-microvolt = <840000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+
+ opp-1200000000 {
+ opp-hz = /bits/ 64 <1200000000>;
+ opp-microvolt = <840000>;
+ clock-latency-ns = <244144>; /* 8 32k periods */
+ };
+ };
+
cpus {
#address-cells = <1>;
#size-cells = <0>;
cpu0: cpu@0 {
+ clocks = <&ccu CLK_C0CPUX>;
+ clock-names = "cpu";
compatible = "arm,cortex-a7";
device_type = "cpu";
+ operating-points-v2 = <&cpu0_opp_table>;
reg = <0>;
};
cpu@1 {
compatible = "arm,cortex-a7";
device_type = "cpu";
+ operating-points-v2 = <&cpu0_opp_table>;
reg = <1>;
};
cpu@2 {
compatible = "arm,cortex-a7";
device_type = "cpu";
+ operating-points-v2 = <&cpu0_opp_table>;
reg = <2>;
};
cpu@3 {
compatible = "arm,cortex-a7";
device_type = "cpu";
+ operating-points-v2 = <&cpu0_opp_table>;
reg = <3>;
};
cpu100: cpu@100 {
+ clocks = <&ccu CLK_C1CPUX>;
+ clock-names = "cpu";
compatible = "arm,cortex-a7";
device_type = "cpu";
+ operating-points-v2 = <&cpu1_opp_table>;
reg = <0x100>;
};
cpu@101 {
compatible = "arm,cortex-a7";
device_type = "cpu";
+ operating-points-v2 = <&cpu1_opp_table>;
reg = <0x101>;
};
cpu@102 {
compatible = "arm,cortex-a7";
device_type = "cpu";
+ operating-points-v2 = <&cpu1_opp_table>;
reg = <0x102>;
};
cpu@103 {
compatible = "arm,cortex-a7";
device_type = "cpu";
+ operating-points-v2 = <&cpu1_opp_table>;
reg = <0x103>;
};
};
The Allwinner A83T is an octacore A7 divided in two clusters of 4 A7, each cluster having its own regulator and clock. The operating points were found in Allwinner BSP and fex files. Note that there are a few OPPs that are missing: 1608000000Hz with 920000mV 1800000000Hz with 1000000mV 2016000000Hz with 1080000mV These OPPs are pretty unstable but it might be due to the SoC quickly overheating (till the board completely shuts down). It seems impossible to reach those frequencies with none or passive cooling, so better leave them out by default. It's still possible to add those OPPs on a per-board basis though. Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> --- arch/arm/boot/dts/sun8i-a83t.dtsi | 118 +++++++++++++++++++++++++++++++- 1 file changed, 118 insertions(+)