[PATCH v1] arm64: dts: cix: Add SCMI performance domains for CPUFreq on Sky1

Peter Chen peter.chen at cixtech.com
Tue May 5 18:24:20 PDT 2026


On 26-04-30 19:35:59, Devin Li wrote:
> From: "devin.li" <Devin.Li at cixtech.com>

Please use your real name

Others are okay for me.

Peter

> 
> Add SCMI Protocol 13 (Performance) node under ap_to_pm_scmi with
> domains.
> 
> Define SKY1_PERF_* macros in sky1-power.h for all performance domain
> IDs (CPU L/B0/B1/M0/M1, GPU, DSU, NPU, VPU, CI700, NI700), and
> wire each CPU node to its corresponding performance domain using
> power-domains and power-domain-names properties.
> 
> Signed-off-by: Devin Li <Devin.Li at cixtech.com>
> ---
>  arch/arm64/boot/dts/cix/sky1-power.h | 13 +++++++++++++
>  arch/arm64/boot/dts/cix/sky1.dtsi    | 29 ++++++++++++++++++++++++++++
>  2 files changed, 42 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/cix/sky1-power.h b/arch/arm64/boot/dts/cix/sky1-power.h
> index 53f4a3af36b3..144567579b71 100644
> --- a/arch/arm64/boot/dts/cix/sky1-power.h
> +++ b/arch/arm64/boot/dts/cix/sky1-power.h
> @@ -30,4 +30,17 @@
>  #define SKY1_PD_ISP0		20
>  #define SKY1_PD_GPU		21
>  
> +#define SKY1_PERF_GPU_CORE	0
> +#define SKY1_PERF_GPU_TOP	1
> +#define SKY1_PERF_CPU_L     2
> +#define SKY1_PERF_CPU_B0	3
> +#define SKY1_PERF_CPU_B1	4
> +#define SKY1_PERF_CPU_M0	5
> +#define SKY1_PERF_CPU_M1	6
> +#define SKY1_PERF_DSU	    7
> +#define SKY1_PERF_NPU	    8
> +#define SKY1_PERF_VPU	    9
> +#define SKY1_PERF_CI700	    10
> +#define SKY1_PERF_NI700	    11
> +
>  #endif
> diff --git a/arch/arm64/boot/dts/cix/sky1.dtsi b/arch/arm64/boot/dts/cix/sky1.dtsi
> index 0611098b5f05..a77c52296ebd 100644
> --- a/arch/arm64/boot/dts/cix/sky1.dtsi
> +++ b/arch/arm64/boot/dts/cix/sky1.dtsi
> @@ -22,6 +22,8 @@ cpu0: cpu at 0 {
>  			enable-method = "psci";
>  			reg = <0x0 0x0>;
>  			device_type = "cpu";
> +			power-domains = <&scmi_dvfs SKY1_PERF_CPU_L>;
> +			power-domain-names = "perf";
>  			capacity-dmips-mhz = <403>;
>  			cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
>  		};
> @@ -31,6 +33,8 @@ cpu1: cpu at 100 {
>  			enable-method = "psci";
>  			reg = <0x0 0x100>;
>  			device_type = "cpu";
> +			power-domains = <&scmi_dvfs SKY1_PERF_CPU_L>;
> +			power-domain-names = "perf";
>  			capacity-dmips-mhz = <403>;
>  			cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
>  		};
> @@ -40,6 +44,8 @@ cpu2: cpu at 200 {
>  			enable-method = "psci";
>  			reg = <0x0 0x200>;
>  			device_type = "cpu";
> +			power-domains = <&scmi_dvfs SKY1_PERF_CPU_L>;
> +			power-domain-names = "perf";
>  			capacity-dmips-mhz = <403>;
>  			cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
>  		};
> @@ -49,6 +55,8 @@ cpu3: cpu at 300 {
>  			enable-method = "psci";
>  			reg = <0x0 0x300>;
>  			device_type = "cpu";
> +			power-domains = <&scmi_dvfs SKY1_PERF_CPU_L>;
> +			power-domain-names = "perf";
>  			capacity-dmips-mhz = <403>;
>  			cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
>  		};
> @@ -58,6 +66,8 @@ cpu4: cpu at 400 {
>  			enable-method = "psci";
>  			reg = <0x0 0x400>;
>  			device_type = "cpu";
> +			power-domains = <&scmi_dvfs SKY1_PERF_CPU_M0>;
> +			power-domain-names = "perf";
>  			capacity-dmips-mhz = <1024>;
>  			cpu-idle-states = <&CPU_SLEEP_1 &CLUSTER_SLEEP_0>;
>  		};
> @@ -67,6 +77,8 @@ cpu5: cpu at 500 {
>  			enable-method = "psci";
>  			reg = <0x0 0x500>;
>  			device_type = "cpu";
> +			power-domains = <&scmi_dvfs SKY1_PERF_CPU_M0>;
> +			power-domain-names = "perf";
>  			capacity-dmips-mhz = <1024>;
>  			cpu-idle-states = <&CPU_SLEEP_1 &CLUSTER_SLEEP_0>;
>  		};
> @@ -76,6 +88,8 @@ cpu6: cpu at 600 {
>  			enable-method = "psci";
>  			reg = <0x0 0x600>;
>  			device_type = "cpu";
> +			power-domains = <&scmi_dvfs SKY1_PERF_CPU_M1>;
> +			power-domain-names = "perf";
>  			capacity-dmips-mhz = <1024>;
>  			cpu-idle-states = <&CPU_SLEEP_1 &CLUSTER_SLEEP_0>;
>  		};
> @@ -85,6 +99,8 @@ cpu7: cpu at 700 {
>  			enable-method = "psci";
>  			reg = <0x0 0x700>;
>  			device_type = "cpu";
> +			power-domains = <&scmi_dvfs SKY1_PERF_CPU_M1>;
> +			power-domain-names = "perf";
>  			capacity-dmips-mhz = <1024>;
>  			cpu-idle-states = <&CPU_SLEEP_1 &CLUSTER_SLEEP_0>;
>  		};
> @@ -94,6 +110,8 @@ cpu8: cpu at 800 {
>  			enable-method = "psci";
>  			reg = <0x0 0x800>;
>  			device_type = "cpu";
> +			power-domains = <&scmi_dvfs SKY1_PERF_CPU_B0>;
> +			power-domain-names = "perf";
>  			capacity-dmips-mhz = <1024>;
>  			cpu-idle-states = <&CPU_SLEEP_1 &CLUSTER_SLEEP_0>;
>  		};
> @@ -103,6 +121,8 @@ cpu9: cpu at 900 {
>  			enable-method = "psci";
>  			reg = <0x0 0x900>;
>  			device_type = "cpu";
> +			power-domains = <&scmi_dvfs SKY1_PERF_CPU_B0>;
> +			power-domain-names = "perf";
>  			capacity-dmips-mhz = <1024>;
>  			cpu-idle-states = <&CPU_SLEEP_1 &CLUSTER_SLEEP_0>;
>  		};
> @@ -112,6 +132,8 @@ cpu10: cpu at a00 {
>  			enable-method = "psci";
>  			reg = <0x0 0xa00>;
>  			device_type = "cpu";
> +			power-domains = <&scmi_dvfs SKY1_PERF_CPU_B1>;
> +			power-domain-names = "perf";
>  			capacity-dmips-mhz = <1024>;
>  			cpu-idle-states = <&CPU_SLEEP_1 &CLUSTER_SLEEP_0>;
>  		};
> @@ -121,6 +143,8 @@ cpu11: cpu at b00 {
>  			enable-method = "psci";
>  			reg = <0x0 0xb00>;
>  			device_type = "cpu";
> +			power-domains = <&scmi_dvfs SKY1_PERF_CPU_B1>;
> +			power-domain-names = "perf";
>  			capacity-dmips-mhz = <1024>;
>  			cpu-idle-states = <&CPU_SLEEP_1 &CLUSTER_SLEEP_0>;
>  		};
> @@ -205,6 +229,11 @@ ap_to_pm_scmi: scmi {
>  			#address-cells = <1>;
>  			#size-cells = <0>;
>  
> +			scmi_dvfs: protocol at 13 {
> +				reg = <0x13>;
> +				#power-domain-cells = <1>;
> +			};
> +
>  			scmi_clk: protocol at 14 {
>  				reg = <0x14>;
>  				#clock-cells = <1>;
> -- 
> 2.49.0
> 

-- 

Best regards,
Peter



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