linux-kernel - Re: [PATCH 2/2] arm64: dts: rockchip: enable rk809 audio codec on the rk3568 evb1

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Date:   Wed, 23 Feb 2022 00:11:12 +0100
From:   Heiko Stuebner <heiko@...ech.de>
To:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Michael Riesch <michael.riesch@...fvision.net>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Michael Riesch <michael.riesch@...fvision.net>,
        Liang Chen <cl@...k-chips.com>, frank-w@...lic-files.de
Subject: Re: [PATCH 2/2] arm64: dts: rockchip: enable rk809 audio codec on the rk3568 evb1

Hi,

Am Dienstag, 22. Februar 2022, 18:50:04 CET schrieb Michael Riesch:
> Enable the Rockchip RK809 audio codec on the Rockchip RK3568
> EVB1. This requires the VCCIO_ACODEC voltage regulator to be set
> to always on.
> 
> Signed-off-by: Michael Riesch <michael.riesch@...fvision.net>

[...]

> @@ -282,6 +301,7 @@ regulator-state-mem {
>  
>  			vccio_acodec: LDO_REG4 {
>  				regulator-name = "vccio_acodec";
> +				regulator-always-on;

As this seems to supply the codec (in the rk809?) shouldn't the
sound part model that relationship and handle regulators
instead of requiring an arbitary regulator to be always on?


Heiko

>  				regulator-min-microvolt = <3300000>;
>  				regulator-max-microvolt = <3300000>;
>  
> @@ -366,6 +386,10 @@ regulator-state-mem {
>  				};
>  			};
>  		};
> +
> +		codec {
> +			mic-in-differential;
> +		};
>  	};
>  };
>  
> @@ -386,6 +410,11 @@ touchscreen0: goodix@14 {
>  	};
>  };
>  
> +&i2s1_8ch {
> +	rockchip,trcm-sync-tx-only;
> +	status = "okay";
> +};
> +
>  &mdio0 {
>  	rgmii_phy0: ethernet-phy@0 {
>  		compatible = "ethernet-phy-ieee802.3-c22";
>