linux-kernel - Re: [PATCH v2 3/3] arm64: dts: meson: add audio playback to u200

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Date:   Tue, 21 Jul 2020 11:06:32 +0200
From:   Jerome Brunet <jbrunet@...libre.com>
To:     Christian Hewitt <christianshewitt@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Kevin Hilman <khilman@...libre.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/3] arm64: dts: meson: add audio playback to u200


On Sun 19 Jul 2020 at 04:45, Christian Hewitt <christianshewitt@...il.com> wrote:

> Add initial support limited to HDMI i2s and S/PDIF (LPCM).

Nack.

#1. Same comment as before on spdifout B and SPDIF HDMI input.
#2. the u200 is a special reference device with 2 onboards codecs,
    external connector for audio daugther boards and internal codec.
    I don't see another board using that configuration, which would make
    them incompatible
#3. TDM B is a bad choice on this board as it connected to one of the
    i2s codecs of the board, which won't take 4 lines ine.

>
> Signed-off-by: Christian Hewitt <christianshewitt@...il.com>
> ---
>  .../boot/dts/amlogic/meson-g12a-u200.dts      | 131 ++++++++++++++++++
>  1 file changed, 131 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts b/arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts
> index a26bfe72550f..dde7e258a184 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts
> +++ b/arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts
> @@ -8,6 +8,7 @@
>  #include "meson-g12a.dtsi"
>  #include <dt-bindings/gpio/gpio.h>
>  #include <dt-bindings/gpio/meson-g12a-gpio.h>
> +#include <dt-bindings/sound/meson-g12a-tohdmitx.h>
>  
>  / {
>  	compatible = "amlogic,u200", "amlogic,g12a";
> @@ -18,6 +19,13 @@
>  		ethernet0 = &ethmac;
>  	};
>  
> +	spdif_dit: audio-codec-1 {
> +		#sound-dai-cells = <0>;
> +		compatible = "linux,spdif-dit";
> +		status = "okay";
> +		sound-name-prefix = "DIT";
> +	};
> +
>  	chosen {
>  		stdout-path = "serial0:115200n8";
>  	};
> @@ -147,6 +155,91 @@
>  		regulator-boot-on;
>  		regulator-always-on;
>  	};
> +
> +
> +	sound {
> +		compatible = "amlogic,axg-sound-card";
> +		model = "G12A-U200";
> +		audio-aux-devs = <&tdmout_b>;
> +		audio-routing = "TDMOUT_B IN 0", "FRDDR_A OUT 1",
> +				"TDMOUT_B IN 1", "FRDDR_B OUT 1",
> +				"TDMOUT_B IN 2", "FRDDR_C OUT 1",
> +				"TDM_B Playback", "TDMOUT_B OUT",
> +				"SPDIFOUT IN 0", "FRDDR_A OUT 3",
> +				"SPDIFOUT IN 1", "FRDDR_B OUT 3",
> +				"SPDIFOUT IN 2", "FRDDR_C OUT 3";
> +
> +		assigned-clocks = <&clkc CLKID_MPLL2>,
> +				  <&clkc CLKID_MPLL0>,
> +				  <&clkc CLKID_MPLL1>;
> +		assigned-clock-parents = <0>, <0>, <0>;
> +		assigned-clock-rates = <294912000>,
> +				       <270950400>,
> +				       <393216000>;
> +		status = "okay";
> +
> +		dai-link-0 {
> +			sound-dai = <&frddr_a>;
> +		};
> +
> +		dai-link-1 {
> +			sound-dai = <&frddr_b>;
> +		};
> +
> +		dai-link-2 {
> +			sound-dai = <&frddr_c>;
> +		};
> +
> +		/* 8ch hdmi interface */
> +		dai-link-3 {
> +			sound-dai = <&tdmif_b>;
> +			dai-format = "i2s";
> +			dai-tdm-slot-tx-mask-0 = <1 1>;
> +			dai-tdm-slot-tx-mask-1 = <1 1>;
> +			dai-tdm-slot-tx-mask-2 = <1 1>;
> +			dai-tdm-slot-tx-mask-3 = <1 1>;
> +			mclk-fs = <256>;
> +
> +			codec {
> +				sound-dai = <&tohdmitx TOHDMITX_I2S_IN_B>;
> +			};
> +		};
> +
> +		/* spdif hdmi or toslink interface */
> +		dai-link-4 {
> +			sound-dai = <&spdifout>;
> +
> +			codec-0 {
> +				sound-dai = <&spdif_dit>;
> +			};
> +
> +			codec-1 {
> +				sound-dai = <&tohdmitx TOHDMITX_SPDIF_IN_A>;
> +			};
> +		};
> +
> +		/* spdif hdmi interface */
> +		dai-link-5 {
> +			sound-dai = <&spdifout_b>;
> +
> +			codec {
> +				sound-dai = <&tohdmitx TOHDMITX_SPDIF_IN_B>;
> +			};
> +		};
> +
> +		/* hdmi glue */
> +		dai-link-6 {
> +			sound-dai = <&tohdmitx TOHDMITX_I2S_OUT>;
> +
> +			codec {
> +				sound-dai = <&hdmi_tx>;
> +			};
> +		};
> +	};
> +};
> +
> +&arb {
> +	status = "okay";
>  };
>  
>  &cec_AO {
> @@ -163,6 +256,10 @@
>  	hdmi-phandle = <&hdmi_tx>;
>  };
>  
> +&clkc_audio {
> +	status = "okay";
> +};
> +
>  &cpu0 {
>  	cpu-supply = <&vddcpu>;
>  	operating-points-v2 = <&cpu_opp_table>;
> @@ -203,6 +300,18 @@
>  	phy-mode = "rmii";
>  };
>  
> +&frddr_a {
> +	status = "okay";
> +};
> +
> +&frddr_b {
> +	status = "okay";
> +};
> +
> +&frddr_c {
> +	status = "okay";
> +};
> +
>  &hdmi_tx {
>  	status = "okay";
>  	pinctrl-0 = <&hdmitx_hpd_pins>, <&hdmitx_ddc_pins>;
> @@ -288,6 +397,28 @@
>  	vqmmc-supply = <&flash_1v8>;
>  };
>  
> +&spdifout {
> +	pinctrl-0 = <&spdif_out_h_pins>;
> +	pinctrl-names = "default";
> +	status = "okay";
> +};
> +
> +&spdifout_b {
> +	status = "okay";
> +};
> +
> +&tdmif_b {
> +	status = "okay";
> +};
> +
> +&tdmout_b {
> +	status = "okay";
> +};
> +
> +&tohdmitx {
> +	status = "okay";
> +};
> +
>  &uart_AO {
>  	status = "okay";
>  	pinctrl-0 = <&uart_ao_a_pins>;