From mboxrd@z Thu Jan  1 00:00:00 1970
From: Lucas Stach <l.stach@pengutronix.de>
Subject: Re: [RFC 5/5] arm64: dts: imx8mq: Add the opp table and the
 cpu-supply nodes
Date: Thu, 14 Feb 2019 16:50:28 +0100
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To: Abel Vesa <abel.vesa@nxp.com>, Rob Herring <robh@kernel.org>, Stephen Boyd <sboyd@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Mike Turquette <mturquette@baylibre.com>, Shawn Guo <shawnguo@kernel.org>, Sascha Hauer <kernel@pengutronix.de>, Angus Ainslie <angus.ainslie@puri.sm>, Anson Huang <anson.huang@nxp.com>
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Hi Abel

Am Mittwoch, den 13.02.2019, 19:05 +0000 schrieb Abel Vesa:
> Add the opp table containing only non over drive opps.
> Also add the cpu-supply nodes for the A53 cores in the EVK board.
> 
> Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
> ---
>  arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 17 +++++++++++++++++
>  arch/arm64/boot/dts/freescale/imx8mq.dtsi    | 23 +++++++++++++++++++++++
>  2 files changed, 40 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> index 54737bf..114359e 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> @@ -31,6 +31,23 @@
>  		gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>;
>  		enable-active-high;
>  	};
> +
> +};
> +
> +&A53_0 {
> +	cpu-supply = <&sw1a_reg>;
> +};
> +
> +&A53_1 {
> +	cpu-supply = <&sw1a_reg>;
> +};
> +
> +&A53_2 {
> +	cpu-supply = <&sw1a_reg>;
> +};
> +
> +&A53_3 {
> +	cpu-supply = <&sw1a_reg>;
>  };

This should be a separate patch.

And AFAICS this is wrong, sw1a on the MX8M-EVK is the GPU supply, the
CPU is supplied by a dedicated switcher that is controlled via a GPIO.

Regards,
Lucas

>  &fec1 {
> diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> index 1a89062..89b2d5f 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> @@ -91,6 +91,7 @@
>  			clocks = <&clk IMX8MQ_CLK_ARM>;
>  			enable-method = "psci";
>  			next-level-cache = <&A53_L2>;
> +			operating-points-v2 = <&a53_0_opp_table>;
>  		};
>  
>  		A53_1: cpu@1 {
> @@ -101,6 +102,7 @@
>  			clocks = <&clk IMX8MQ_CLK_ARM>;
>  			enable-method = "psci";
>  			next-level-cache = <&A53_L2>;
> +			operating-points-v2 = <&a53_0_opp_table>;
>  		};
>  
>  		A53_2: cpu@2 {
> @@ -111,6 +113,7 @@
>  			clocks = <&clk IMX8MQ_CLK_ARM>;
>  			enable-method = "psci";
>  			next-level-cache = <&A53_L2>;
> +			operating-points-v2 = <&a53_0_opp_table>;
>  		};
>  
>  		A53_3: cpu@3 {
> @@ -121,6 +124,7 @@
>  			clocks = <&clk IMX8MQ_CLK_ARM>;
>  			enable-method = "psci";
>  			next-level-cache = <&A53_L2>;
> +			operating-points-v2 = <&a53_0_opp_table>;
>  		};
>  
>  		A53_L2: l2-cache0 {
> @@ -666,6 +670,25 @@
>  			status = "disabled";
>  		};
>  
> +
> +		a53_0_opp_table: opp-table {
> +			compatible = "operating-points-v2";
> +			opp-shared;
> +
> +			opp-800000000 {
> +				opp-hz = /bits/ 64 <800000000>;
> +				opp-microvolt = <900000>;
> +				clock-latency-ns = <150000>;
> +			};
> +
> +			opp-1000000000 {
> +				opp-hz = /bits/ 64 <1000000000>;
> +				opp-microvolt = <900000>;
> +				clock-latency-ns = <150000>;
> +				opp-suspend;
> +			};
> +		};
> +
>  		gic: interrupt-controller@38800000 {
>  			compatible = "arm,gic-v3";
>  			reg = <0x38800000 0x10000>,	/* GIC
> Dist */