linux-kernel - Re: [PATCH v3] arm64: dts: imx8mq: Init rates and parents configs for clocks

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Date:   Sun, 28 Jul 2019 07:53:08 -0700
From:   Angus Ainslie <angus@...ea.ca>
To:     Daniel Baluta <daniel.baluta@....com>
Cc:     shawnguo@...nel.org, s.hauer@...gutronix.de, festevam@...il.com,
        linux-imx@....com, l.stach@...gutronix.de, ccaione@...libre.com,
        abel.vesa@....com, baruch@...s.co.il, andrew.smirnov@...il.com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, shengjiu.wang@....com,
        agx@...xcpu.org, Anson.Huang@....com,
        linux-kernel-owner@...r.kernel.org
Subject: Re: [PATCH v3] arm64: dts: imx8mq: Init rates and parents configs for
 clocks

Hi Daniel,

On 2019-07-28 07:12, Daniel Baluta wrote:
> From: Abel Vesa <abel.vesa@....com>
> 
> Add the initial configuration for clocks that need default parent and 
> rate
> setting. This is based on the vendor tree clock provider parents and 
> rates
> configuration except this is doing the setup in dts rather then using 
> clock
> consumer API in a clock provider driver.
> 
> Note that by adding the initial rate setting for audio_pll1/audio_pll
> setting we need to remove it from imx8mq-librem5-devkit.dts
> imx8mq-librem5-devkit.dts
> 
> Signed-off-by: Abel Vesa <abel.vesa@....com>
> Signed-off-by: Daniel Baluta <daniel.baluta@....com>

This works with our board. One small nit below

Tested-by: Angus Ainslie (Purism) <angus@...ea.ca>

> ---
> Changes since v2:
> 	- set rate for audio_pll1/audio_pll2  in the dtsi file and
> 	remove the setting from imx8mq-librem5-devkit.dts
> 
>  .../dts/freescale/imx8mq-librem5-devkit.dts   |  5 -----
>  arch/arm64/boot/dts/freescale/imx8mq.dtsi     | 21 +++++++++++++++++++
>  2 files changed, 21 insertions(+), 5 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> index 683a11035643..c702ccc82867 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> @@ -169,11 +169,6 @@
>  	};
>  };
> 
> -&clk {
> -	assigned-clocks = <&clk IMX8MQ_AUDIO_PLL1>, <&clk IMX8MQ_AUDIO_PLL2>;
> -	assigned-clock-rates = <786432000>, <722534400>;
> -};
> -
>  &dphy {
>  	status = "okay";
>  };
> diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> index 02fbd0625318..c67625a881a4 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> @@ -494,6 +494,27 @@
>  				clock-names = "ckil", "osc_25m", "osc_27m",
>  				              "clk_ext1", "clk_ext2",
>  				              "clk_ext3", "clk_ext4";
> +				assigned-clocks = <&clk IMX8MQ_VIDEO_PLL1>,
> +					<&clk IMX8MQ_AUDIO_PLL1>,
> +					<&clk IMX8MQ_AUDIO_PLL2>,
> +					<&clk IMX8MQ_CLK_AHB>,
> +					<&clk IMX8MQ_CLK_NAND_USDHC_BUS>,
> +					<&clk IMX8MQ_CLK_AUDIO_AHB>,
> +					<&clk IMX8MQ_VIDEO_PLL1_REF_SEL>,
> +					<&clk IMX8MQ_CLK_NOC>;
> +				assigned-clock-parents = <0>,
> +						<0>,
> +						<0>,
> +						<&clk IMX8MQ_SYS1_PLL_133M>,
> +						<&clk IMX8MQ_SYS1_PLL_266M>,
> +						<&clk IMX8MQ_SYS2_PLL_500M>,
> +						<&clk IMX8MQ_CLK_27M>,
> +						<&clk IMX8MQ_SYS1_PLL_800M>;
> +				assigned-clock-rates = <593999999>,
> +						<786432000>,
> +						<722534400>;
> +
> +

Extra whitespace

Angus

>  			};
> 
>  			src: reset-controller@...90000 {