linux-kernel - Re: [PATCH v1 1/4] arm64: dts: ti: k3-am62x: Enable AUDIO

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Message-ID: <itvg2zmmapbfmgbwos6c4y5zsc2rb3sffv2znhwz6i2vahe4y6@uu2547kcz5sd>
Date:   Wed, 2 Aug 2023 16:53:50 +0530
From:   Jai Luthra <j-luthra@...com>
To:     Francesco Dolcini <francesco@...cini.it>
CC:     Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Francesco Dolcini <francesco.dolcini@...adex.com>
Subject: Re: [PATCH v1 1/4] arm64: dts: ti: k3-am62x: Enable AUDIO_REFCLKx

Hi Francesco,

Thank you for posting this patch.

On Jul 31, 2023 at 16:21:32 +0200, Francesco Dolcini wrote:
> From: Jai Luthra <j-luthra@...com>
> 
> On AM62-based SoCs the AUDIO_REFCLKx clocks can be used as an input to
> external peripherals when configured through CTRL_MMR, so add the
> clock nodes.
> 
> Signed-off-by: Jai Luthra <j-luthra@...com>
> Signed-off-by: Francesco Dolcini <francesco.dolcini@...adex.com>
> ---
>  arch/arm64/boot/dts/ti/k3-am62-main.dtsi  | 18 ++++++++++++++++++
>  arch/arm64/boot/dts/ti/k3-am62a-main.dtsi | 18 ++++++++++++++++++

Given currently none of the AM62A boards are using the refclks, can you 
drop those or just mark the nodes as disabled. Whoever is the first user 
can enable them.

With that change, LGTM.
Not sure if I can provide an R-by tag, given I'm the author.

>  2 files changed, 36 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
> index 33b6aadc9083..3a1b387bbf49 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
> @@ -60,6 +60,24 @@ epwm_tbclk: clock@...0 {
>  			reg = <0x4130 0x4>;
>  			#clock-cells = <1>;
>  		};
> +
> +		audio_refclk0: clock@...0 {
> +			compatible = "ti,am62-audio-refclk";
> +			reg = <0x82e0 0x4>;
> +			clocks = <&k3_clks 157 0>;
> +			assigned-clocks = <&k3_clks 157 0>;
> +			assigned-clock-parents = <&k3_clks 157 8>;
> +			#clock-cells = <0>;
> +		};
> +
> +		audio_refclk1: clock@...4 {
> +			compatible = "ti,am62-audio-refclk";
> +			reg = <0x82e4 0x4>;
> +			clocks = <&k3_clks 157 10>;
> +			assigned-clocks = <&k3_clks 157 10>;
> +			assigned-clock-parents = <&k3_clks 157 18>;
> +			#clock-cells = <0>;
> +		};
>  	};
>  
>  	dmss: bus@...00000 {
> diff --git a/arch/arm64/boot/dts/ti/k3-am62a-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62a-main.dtsi
> index 8397cb80f559..30b163a9b248 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62a-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62a-main.dtsi
> @@ -60,6 +60,24 @@ epwm_tbclk: clock-controller@...0 {
>  			reg = <0x4130 0x4>;
>  			#clock-cells = <1>;
>  		};
> +
> +		audio_refclk0: clock@...0 {
> +			compatible = "ti,am62-audio-refclk";
> +			reg = <0x82e0 0x4>;
> +			clocks = <&k3_clks 157 0>;
> +			assigned-clocks = <&k3_clks 157 0>;
> +			assigned-clock-parents = <&k3_clks 157 8>;
> +			#clock-cells = <0>;
> +		};
> +
> +		audio_refclk1: clock@...4 {
> +			compatible = "ti,am62-audio-refclk";
> +			reg = <0x82e4 0x4>;
> +			clocks = <&k3_clks 157 10>;
> +			assigned-clocks = <&k3_clks 157 10>;
> +			assigned-clock-parents = <&k3_clks 157 18>;
> +			#clock-cells = <0>;
> +		};
>  	};
>  
>  	dmss: bus@...00000 {
> -- 
> 2.25.1
> 
> 

-- 
Thanks,
Jai

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