linux-kernel - Re: [PATCH v0 2/2] arm64: dts: rockchip: add support for Firefly ROC-RK3399-PC-PLUS

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Message-ID: <149c2171-471e-343e-8126-38394746b044@t-chip.com.cn>
Date:   Tue, 29 Jun 2021 17:15:59 +0800
From:   Levin <djw@...hip.com.cn>
To:     linux-rockchip@...ts.infradead.org
Cc:     Wayne Chou <zxf@...hip.com.cn>, Kongxin Deng <dkx@...hip.com.cn>,
        Heiko Stuebner <heiko@...ech.de>, Chen-Yu Tsai <wens@...e.org>,
        Jagan Teki <jagan@...rulasolutions.com>,
        Jensen Huang <jensenhuang@...endlyarm.com>,
        Johan Jonker <jbx6244@...il.com>,
        Liang Chen <cl@...k-chips.com>,
        Marty Jones <mj8263788@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Uwe Kleine-König <uwe@...ine-koenig.org>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v0 2/2] arm64: dts: rockchip: add support for Firefly
 ROC-RK3399-PC-PLUS

Hi all, is it possible to turn on some codec mixer switch in the device 
tree?


Currently, to hear to sound, we need to run the following commands from 
the user space:

   # turn on mixer switch

   amixer -c 1 sset 'Left Mixer' on
   amixer -c 1 sset 'Right Mixer' on

   # raise volume

   amixer -c 1 sset 'Output 2' 36


If these settings can be embedded into device tree, and set by kernel as 
initial ALSA path settings,

user can hear the sound with zero ALSA config. That'll be great.


On 2021-06-28 11:54 AM, djw@...hip.com.cn wrote:
> +
> +	es8388-sound {
> +		compatible = "simple-audio-card";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&hp_det_pin>;
> +		simple-audio-card,name = "rockchip,es8388-codec";
> +		simple-audio-card,format = "i2s";
> +		simple-audio-card,mclk-fs = <256>;
> +
> +		simple-audio-card,widgets =
> +			"Microphone", "Mic Jack",
> +			"Headphone", "Headphones";
> +		simple-audio-card,routing =
> +			"LINPUT1", "Mic Jack",
> +			"Headphone Amp INL", "LOUT2",
> +			"Headphone Amp INR", "ROUT2",
> +			"Headphones", "Headphone Amp OUTL",
> +			"Headphones", "Headphone Amp OUTR";
> +
> +		simple-audio-card,hp-det-gpio = <&gpio2 RK_PA6 GPIO_ACTIVE_HIGH>;
> +		simple-audio-card,aux-devs = <&headphones_amp>;
> +		simple-audio-card,pin-switches = "Headphones";
> +
> +		simple-audio-card,cpu {
> +			sound-dai = <&i2s1>;
> +		};
> +
> +		simple-audio-card,codec {
> +			sound-dai = <&es8388>;
> +		};
> +	};
> +
>
-- 
Best Regards!

Levin Du