linux-kernel - Re: [PATCH 4/4] arm64: dts: rockchip: add OPPs for rk3368-lion

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Date:   Sat, 17 Feb 2018 10:38:57 +0100
From:   Heiko Stübner <heiko@...ech.de>
To:     Klaus Goger <klaus.goger@...obroma-systems.com>
Cc:     linux-rockchip@...ts.infradead.org,
        Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] arm64: dts: rockchip: add OPPs for rk3368-lion

Am Dienstag, 30. Januar 2018, 13:39:31 CET schrieb Klaus Goger:
> This adds CPU operation points for the RK3368. We only add them to the
> the RK3368-uQ7 SoM (Lion) because patches for the SoC where reverted
> in the past.
> commit 6354a06cbaa8 ("Revert "arm64: dts: rockchip: Add basic cpu
> frequencies for RK3368"")
> 
> Signed-off-by: Klaus Goger <klaus.goger@...obroma-systems.com>
> 
> ---
> 
>  arch/arm64/boot/dts/rockchip/rk3368-lion.dtsi | 96
> ++++++++++++++++++++++++--- 1 file changed, 88 insertions(+), 8
> deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3368-lion.dtsi
> b/arch/arm64/boot/dts/rockchip/rk3368-lion.dtsi index
> 72be1ae0854f..881f0b44c5b5 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3368-lion.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk3368-lion.dtsi
> @@ -11,6 +11,70 @@
>  		stdout-path = "serial0:115200n8";
>  	};
> 
> +	cluster0_opp: opp-table0 {
> +		compatible = "operating-points-v2";
> +		opp-shared;
> +
> +		opp00 {
> +			opp-hz = /bits/ 64 <408000000>;
> +			opp-microvolt = <950000 950000 1350000>;
> +			clock-latency-ns = <40000>;
> +		};
> +		opp01 {
> +			opp-hz = /bits/ 64 <600000000>;
> +			opp-microvolt = <950000 950000 1350000>;
> +		};
> +		opp02 {
> +			opp-hz = /bits/ 64 <816000000>;
> +			opp-microvolt = <975000 975000 1350000>;
> +		};
> +		opp03 {
> +			opp-hz = /bits/ 64 <1008000000>;
> +			opp-microvolt = <1050000 1050000 1350000>;
> +		};
> +		opp04 {
> +			opp-hz = /bits/ 64 <1200000000>;
> +			opp-microvolt = <1150000 1150000 1350000>;
> +		};
> +		opp05 {
> +			opp-hz = /bits/ 64 <1416000000>;
> +			opp-microvolt = <1300000 1300000 1350000>;
> +			turbo-mode;
> +		};
> +		opp06 {
> +			opp-hz = /bits/ 64 <1512000000>;
> +			opp-microvolt = <1300000 1300000 1350000>;
> +			turbo-mode;
> +		};
> +	};
> +
> +	cluster1_opp: opp-table1 {
> +		compatible = "operating-points-v2";
> +		opp-shared;
> +
> +		opp00 {
> +			opp-hz = /bits/ 64 <408000000>;
> +			opp-microvolt = <950000 950000 1350000>;
> +			clock-latency-ns = <40000>;
> +		};
> +		opp01 {
> +			opp-hz = /bits/ 64 <600000000>;
> +			opp-microvolt = <950000 950000 1350000>;
> +		};
> +		opp02 {
> +			opp-hz = /bits/ 64 <816000000>;
> +			opp-microvolt = <1025000 1025000 1350000>;
> +		};
> +		opp03 {
> +			opp-hz = /bits/ 64 <1008000000>;
> +			opp-microvolt = <1125000 1125000 1350000>;
> +		};
> +		opp04 {
> +			opp-hz = /bits/ 64 <1200000000>;
> +			opp-microvolt = <1225000 1225000 1350000>;
> +		};
> +	};
> +
>  	ext_gmac: gmac-clk {
>  		compatible = "fixed-clock";
>  		clock-frequency = <125000000>;
> @@ -239,36 +303,52 @@
>  	status = "okay";
>  };
> 
> -&cpu_l0 {
> +&cpu_b0 {
> +	clocks = <&cru ARMCLKB>;
>  	cpu-supply = <&vdd_cpu>;
> +	operating-points-v2 = <&cluster0_opp>;
>  };

Looks ok for the time being until we have working general OPPs
for rk3368 but can you please adapt the patch to not unecessarily
touch the &cpu_XX handles?


Thanks
Heiko