Re: [PATCH 1/2] ARM: dts: da850-lcdk: Audio support via simple-card

[Sekhar Nori <nsekhar@ti.com>]

+ Peter

On Thursday 11 August 2016 01:38 AM, Karl Beldan wrote:
> The LCDK embeds a TLV320AIC3106 connected to the SoC McASP for analog
> audio. This relies on the 'dummy' regulator as the codec is always on.
> Quality is good with arecord -pipe- aplay on Line In/Line Out.
> The MIC path doesn't seem to work yet.
> 
> Signed-off-by: Karl Beldan <kbeldan@baylibre.com>
> ---
>  arch/arm/boot/dts/da850-lcdk.dts | 75 ++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 75 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/da850-lcdk.dts b/arch/arm/boot/dts/da850-lcdk.dts
> index dbcca0b..35b31d9 100644
> --- a/arch/arm/boot/dts/da850-lcdk.dts
> +++ b/arch/arm/boot/dts/da850-lcdk.dts
> @@ -6,6 +6,7 @@
>  /dts-v1/;
>  #include "da850.dtsi"
>  #include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/sound/tlv320aic31xx-micbias.h>
>  
>  / {
>  	model = "DA850/AM1808/OMAP-L138 LCDK";
> @@ -23,10 +24,50 @@
>  		device_type = "memory";
>  		reg = <0xc0000000 0x08000000>;
>  	};
> +
> +	sound {
> +		compatible = "simple-audio-card";
> +		simple-audio-card,name = "DA850/OMAP-L138 LCDK";
> +		simple-audio-card,widgets =
> +			"Microphone", "Mic Jack",
> +			"Line", "Line In",
> +			"Line", "Line Out";
> +		simple-audio-card,routing =
> +			"MIC3L", "Mic Jack",
> +			"MIC3R", "Mic Jack",
> +			"Mic Jack", "Mic Bias",
> +			"LINE1L", "Line In",
> +			"LINE1R", "Line In",
> +			"Line Out", "LLOUT",
> +			"Line Out", "RLOUT";
> +		simple-audio-card,format = "dsp_b";
> +		simple-audio-card,bitclock-master = <&link0_codec>;
> +		simple-audio-card,frame-master = <&link0_codec>;
> +		simple-audio-card,bitclock-inversion;
> +
> +		simple-audio-card,cpu {
> +			sound-dai = <&mcasp0>;
> +			system-clock-frequency = <24576000>;
> +		};
> +
> +		link0_codec: simple-audio-card,codec {
> +			sound-dai = <&tlv320aic3106>;
> +			system-clock-frequency = <24576000>;
> +		};
> +	};
>  };
>  
>  &pmx_core {
>  	status = "okay";
> +
> +	mcasp0_pins: pinmux_mcasp0_pins {
> +		pinctrl-single,bits = <
> +			/* AHCLKX AFSX ACLKX */
> +			0x00 0x00101010 0x00f0f0f0
> +			/* ARX13 ARX14 */
> +			0x04 0x00000110 0x00000ff0
> +		>;
> +	};
>  };
>  
>  &serial2 {
> @@ -68,3 +109,37 @@
>  	cd-gpios = <&gpio 64 GPIO_ACTIVE_HIGH>;
>  	status = "okay";
>  };
> +
> +&i2c0 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&i2c0_pins>;
> +	clock-frequency = <100000>;
> +	status = "okay";
> +
> +	tlv320aic3106: tlv320aic3106@18 {
> +		#sound-dai-cells = <0>;
> +		compatible = "ti,tlv320aic3106";
> +		reg = <0x18>;
> +		status = "okay";
> +
> +		ai3x-micbias-vg = <MICBIAS_2_5V>;
> +	};
> +};
> +
> +&mcasp0 {
> +	#sound-dai-cells = <0>;
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&mcasp0_pins>;
> +	status = "okay";
> +
> +	op-mode = <0>;   /* DAVINCI_MCASP_IIS_MODE */
> +	tdm-slots = <2>;
> +	serial-dir = <   /* 0: INACTIVE, 1: TX, 2: RX */
> +		0 0 0 0
> +		0 0 0 0
> +		0 0 0 0
> +		0 1 2 0
> +	>;
> +	tx-num-evt = <32>;
> +	rx-num-evt = <32>;
> +};
>