[PATCH v2] drivers: cpufreq: sun8i-r40: Add cpufreq support

[Jernej Škrabec]

Dne torek, 10. maj 2022 ob 02:36:11 CEST je qianfanguijin at 163.com napisal(a):
> From: qianfan Zhao <qianfanguijin at 163.com>
> 
> OPP table value is get from allwinner lichee 3.10 kernel.
> And completed 'cpu-supply' on sun8i based board.
> 
> Signed-off-by: qianfan Zhao <qianfanguijin at 163.com>
> ---
>  .../boot/dts/sun8i-r40-bananapi-m2-ultra.dts  |  4 ++
>  arch/arm/boot/dts/sun8i-r40-feta40i.dtsi      |  4 ++
>  arch/arm/boot/dts/sun8i-r40.dtsi              | 47 +++++++++++++++++++
>  arch/arm/boot/dts/sun8i-t3-cqa3t-bv3.dts      |  4 ++
>  .../boot/dts/sun8i-v40-bananapi-m2-berry.dts  |  4 ++
>  drivers/cpufreq/cpufreq-dt-platdev.c          |  1 +

This patch needs to be split in two:
1. driver change
2. DT changes

And please add change log here for next submission.

>  6 files changed, 64 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts b/arch/arm/
boot/dts/sun8i-r40-bananapi-m2-ultra.dts
> index a6a1087a0c9b..4f30018ec4a2 100644
> --- a/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts
> +++ b/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts
> @@ -113,6 +113,10 @@ &ahci {
>  	status = "okay";
>  };
>  
> +&cpu0 {
> +	cpu-supply = <&reg_dcdc2>;
> +};
> +
>  &de {
>  	status = "okay";
>  };
> diff --git a/arch/arm/boot/dts/sun8i-r40-feta40i.dtsi b/arch/arm/boot/dts/
sun8i-r40-feta40i.dtsi
> index 265e0fa57a32..b872b51a346d 100644
> --- a/arch/arm/boot/dts/sun8i-r40-feta40i.dtsi
> +++ b/arch/arm/boot/dts/sun8i-r40-feta40i.dtsi
> @@ -6,6 +6,10 @@
>  
>  #include "sun8i-r40.dtsi"
>  
> +&cpu0 {
> +	cpu-supply = <&reg_dcdc2>;
> +};
> +
>  &i2c0 {
>  	status = "okay";
>  
> diff --git a/arch/arm/boot/dts/sun8i-r40.dtsi b/arch/arm/boot/dts/sun8i-
r40.dtsi
> index 291f4784e86c..90de119095fa 100644
> --- a/arch/arm/boot/dts/sun8i-r40.dtsi
> +++ b/arch/arm/boot/dts/sun8i-r40.dtsi
> @@ -54,6 +54,41 @@ / {
>  	#size-cells = <1>;
>  	interrupt-parent = <&gic>;
>  
> +	cpu0_opp_table: opp_table0 {
> +		compatible = "operating-points-v2";
> +		opp-shared;
> +
> +		opp-720000000 {
> +			opp-hz = /bits/ 64 <720000000>;
> +			opp-microvolt = <1000000 1000000 1300000>;
> +			clock-latency-ns = <2000000>;
> +		};
> +
> +		opp-912000000 {
> +			opp-hz = /bits/ 64 <912000000>;
> +			opp-microvolt = <1100000 1100000 1300000>;
> +			clock-latency-ns = <2000000>;
> +		};
> +
> +		opp-1008000000 {
> +			opp-hz = /bits/ 64 <1008000000>;
> +			opp-microvolt = <1160000 1160000 1300000>;
> +			clock-latency-ns = <2000000>;
> +		};
> +
> +		opp-1104000000 {
> +			opp-hz = /bits/ 64 <1104000000>;
> +			opp-microvolt = <1240000 1240000 1300000>;
> +			clock-latency-ns = <2000000>;
> +		};
> +
> +		opp-1200000000 {
> +			opp-hz = /bits/ 64 <1200000000>;
> +			opp-microvolt = <1300000 1300000 1300000>;
> +			clock-latency-ns = <2000000>;
> +		};
> +	};
> +
>  	clocks {
>  		#address-cells = <1>;
>  		#size-cells = <1>;
> @@ -84,24 +119,36 @@ cpu0: cpu at 0 {
>  			compatible = "arm,cortex-a7";
>  			device_type = "cpu";
>  			reg = <0>;
> +			clocks = <&ccu CLK_CPU>;
> +			clock-names = "cpu";
> +			operating-points-v2 = <&cpu0_opp_table>;
>  		};
>  
>  		cpu1: cpu at 1 {
>  			compatible = "arm,cortex-a7";
>  			device_type = "cpu";
>  			reg = <1>;
> +			clocks = <&ccu CLK_CPU>;
> +			clock-names = "cpu";
> +			operating-points-v2 = <&cpu0_opp_table>;
>  		};
>  
>  		cpu2: cpu at 2 {
>  			compatible = "arm,cortex-a7";
>  			device_type = "cpu";
>  			reg = <2>;
> +			clocks = <&ccu CLK_CPU>;
> +			clock-names = "cpu";
> +			operating-points-v2 = <&cpu0_opp_table>;
>  		};
>  
>  		cpu3: cpu at 3 {
>  			compatible = "arm,cortex-a7";
>  			device_type = "cpu";
>  			reg = <3>;
> +			clocks = <&ccu CLK_CPU>;
> +			clock-names = "cpu";
> +			operating-points-v2 = <&cpu0_opp_table>;
>  		};
>  	};
>  
> diff --git a/arch/arm/boot/dts/sun8i-t3-cqa3t-bv3.dts b/arch/arm/boot/dts/
sun8i-t3-cqa3t-bv3.dts
> index 6931aaab2382..0eb1990742ff 100644
> --- a/arch/arm/boot/dts/sun8i-t3-cqa3t-bv3.dts
> +++ b/arch/arm/boot/dts/sun8i-t3-cqa3t-bv3.dts
> @@ -88,6 +88,10 @@ &ahci {
>  	status = "okay";
>  };
>  
> +&cpu0 {
> +	cpu-supply = <&reg_dcdc2>;
> +};
> +
>  &de {
>  	status = "okay";
>  };
> diff --git a/arch/arm/boot/dts/sun8i-v40-bananapi-m2-berry.dts b/arch/arm/
boot/dts/sun8i-v40-bananapi-m2-berry.dts
> index 47954551f573..fdf8bd12faaa 100644
> --- a/arch/arm/boot/dts/sun8i-v40-bananapi-m2-berry.dts
> +++ b/arch/arm/boot/dts/sun8i-v40-bananapi-m2-berry.dts
> @@ -107,6 +107,10 @@ &ahci {
>  	status = "okay";
>  };
>  
> +&cpu0 {
> +	cpu-supply = <&reg_dcdc2>;
> +};
> +
>  &de {
>  	status = "okay";
>  };
> diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-
dt-platdev.c
> index ca1d103ec449..971a99219d4d 100644
> --- a/drivers/cpufreq/cpufreq-dt-platdev.c
> +++ b/drivers/cpufreq/cpufreq-dt-platdev.c
> @@ -26,6 +26,7 @@ static const struct of_device_id allowlist[] __initconst = 
{
>  	{ .compatible = "allwinner,sun8i-a23", },
>  	{ .compatible = "allwinner,sun8i-a83t", },
>  	{ .compatible = "allwinner,sun8i-h3", },
> +	{ .compatible = "allwinner,sun8i-r40", },

Why on allow list? Comment says operatings-point-v2 should be on block list, 
just like H6.

Best regards,
Jernej

>  
>  	{ .compatible = "apm,xgene-shadowcat", },
>  
> -- 
> 2.25.1
> 
>