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修改rk3399pro-toybrick.dtsi中 volume部分,具体可以看对应驱动。
rk809_codec: codec {
#sound-dai-cells = <0>;
compatible = "rockchip,rk809-codec", "rockchip,rk817-codec";
clocks = <&cru SCLK_I2S_8CH_OUT>;
clock-names = "mclk";
pinctrl-names = "default";
pinctrl-0 = <&i2s_8ch_mclk>;
hp-volume = <20>;
spk-volume = <3>;
status = "okay";
}; |
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