linux-kernel - Re: [PATCH] arm64: dts: meson-sm1: add spdifin spdifout nodes

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Date:   Mon, 3 Jan 2022 16:18:09 +0100
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Artem Lapkin <email2tema@...il.com>
Cc:     jbrunet@...libre.com, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        christianshewitt@...il.com, art@...das.com, nick@...das.com,
        gouwa@...das.com
Subject: Re: [PATCH] arm64: dts: meson-sm1: add spdifin spdifout nodes

On 15/12/2021 04:02, Artem Lapkin wrote:
> Add spdifin spdifout nodes for Amlogic SM1 SoCs.
> 
> Signed-off-by: Artem Lapkin <art@...das.com>
> ---
> 
> SPDIF IN and SPDIF OUT both tested and works fine for VIM3L (meson-sm1)
> same as for VIM3 (meson-g12)
> 
> SPDIF in and SPDIF OUT both pins available via GPIO header (SPDIF_OUT PIN
> 13 spdif_ao_out_pins and SPDIF_IN PIN 35 - same PWM_F spdif_in_h_pins)
> 
> https://lore.kernel.org/linux-arm-kernel/1jtuhwvqxa.fsf@starbuckisacylon.baylibre.com/t/
> 
> ALSA spdifin test example
> =========================
> 
> # arecord -fS16_LE -r48000 -c2 -Dplug:spdifin
> 
> # cat .asoundrc
> pcm.spdifin {
> type iec958
> slave {
> pcm "hw:0,1"
> format IEC958_SUBFRAME_LE
> }
> }
> 
> DT sound card configs for testing
> =================================
> 
> &spdifout {
>     pinctrl-0 = <&spdif_ao_out_pins>;
>     pinctrl-names = "default";
>     status = "okay";
> };
> 
> &spdifin {
>     pinctrl-0 = <&spdif_in_h_pins>;
>     pinctrl-names = "default";
>     status = "okay";
> };
> 
> ...
>     spdif_dit: audio-codec-1 {
> 	#sound-dai-cells = <0>;
> 	compatible = "linux,spdif-dit";
> 	status = "okay";
> 	sound-name-prefix = "DIT";
>     };
> 
>     spdif_dir: audio-codec-2 {
> 	#sound-dai-cells = <0>;
> 	compatible = "linux,spdif-dir";
> 	status = "okay";
> 	sound-name-prefix = "DIR";
>     };
> ...
> 	audio-routing = ...
> 		"TODDR_B IN 3", "SPDIFIN Capture",
> 		"SPDIFOUT IN 0", "FRDDR_A OUT 3";
> 
> ...
> 	dai-link-10 {
> 	    sound-dai = <&spdifout>;
> 
> 	    codec-0 {
> 		sound-dai = <&spdif_dit>;
> 	    };
> 	};
> 
> 	/* spdif or toslink interface */
> 	dai-link-11 {
> 	    sound-dai = <&spdifin>;
> 
> 	    codec-0 {
> 		sound-dai = <&spdif_dir>;
> 	    };
> 	};
> ...
> 
> ---
>  arch/arm64/boot/dts/amlogic/meson-sm1.dtsi | 27 ++++++++++++++++++++++
>  1 file changed, 27 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi b/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi
> index 3d8b1f4f2001..1e0adf259d61 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi
> @@ -356,6 +356,33 @@ tdmin_lb: audio-controller@3c0 {
>  			status = "disabled";
>  		};
>  
> +		spdifin: audio-controller@400 {
> +			compatible = "amlogic,g12a-spdifin",
> +			"amlogic,axg-spdifin";
> +			reg = <0x0 0x400 0x0 0x30>;
> +			#sound-dai-cells = <0>;
> +			sound-name-prefix = "SPDIFIN";
> +			interrupts = <GIC_SPI 151 IRQ_TYPE_EDGE_RISING>;
> +			clocks = <&clkc_audio AUD_CLKID_SPDIFIN>,
> +			<&clkc_audio AUD_CLKID_SPDIFIN_CLK>;
> +			clock-names = "pclk", "refclk";
> +			resets = <&clkc_audio AUD_RESET_SPDIFIN>;
> +			status = "disabled";
> +		};
> +
> +		spdifout: audio-controller@480 {
> +			compatible = "amlogic,g12a-spdifout",
> +			"amlogic,axg-spdifout";
> +			reg = <0x0 0x480 0x0 0x50>;
> +			#sound-dai-cells = <0>;
> +			sound-name-prefix = "SPDIFOUT";
> +			clocks = <&clkc_audio AUD_CLKID_SPDIFOUT>,
> +			<&clkc_audio AUD_CLKID_SPDIFOUT_CLK>;
> +			clock-names = "pclk", "mclk";
> +			resets = <&clkc_audio AUD_RESET_SPDIFOUT>;
> +			status = "disabled";
> +		};
> +
>  		tdmout_a: audio-controller@500 {
>  			compatible = "amlogic,sm1-tdmout";
>  			reg = <0x0 0x500 0x0 0x40>;
> 

Reviewed-by: Neil Armstrong <narmstrong@...libre.com>

Thanks,
Neil