Hello, On 09/22/17 19:15, Icenowy Zheng wrote:
Add the operating table for the CPU (ARM cores) on Allwinner A64 SoC.OPPs higher to 816MHz is temporarily dropped, to prevent overheat on boards with AXP803 support and undervoltage on boards without AXP803 support. Signed-off-by: Icenowy Zheng <icen...@aosc.io> --- arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi index 20aba7b186aa..0532da4939eb 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi @@ -52,6 +52,23 @@ #address-cells = <1>; #size-cells = <1>;+ cpu0_opp_table: opp_table0 {+ compatible = "operating-points-v2"; + opp-shared; + + opp-648000000 { + opp-hz = /bits/ 64 <648000000>; + opp-microvolt = <1040000>; + clock-latency-ns = <244144>; /* 8 32k periods */ + }; + + opp-816000000 { + opp-hz = /bits/ 64 <816000000>; + opp-microvolt = <1100000>; + clock-latency-ns = <244144>; /* 8 32k periods */ + }; + }; + cpus { #address-cells = <1>; #size-cells = <0>; @@ -61,6 +78,10 @@ device_type = "cpu"; reg = <0>; enable-method = "psci"; + clocks = <&ccu CLK_CPUX>;
CLK_CPUX is not currently exposed in the dt-bindings header, so this doesn't compile.
+ clock-names = "cpu"; + operating-points-v2 = <&cpu0_opp_table>; + #cooling-cells = <2>; };cpu1: cpu@1 {@@ -68,6 +89,7 @@ device_type = "cpu"; reg = <1>; enable-method = "psci"; + operating-points-v2 = <&cpu0_opp_table>; };cpu2: cpu@2 {@@ -75,6 +97,7 @@ device_type = "cpu"; reg = <2>; enable-method = "psci"; + operating-points-v2 = <&cpu0_opp_table>; };cpu3: cpu@3 {@@ -82,6 +105,7 @@ device_type = "cpu"; reg = <3>; enable-method = "psci"; + operating-points-v2 = <&cpu0_opp_table>; }; };
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