ROC-RK3308B-CC-PLUS_Buildroot_v1.5.0a 使用外部codec platform_name 为空
在DTS中增加：es7210_sound: es7210-sound {
status = "okay";
compatible = "simple-audio-card";
simple-audio-card,format = "i2s";
simple-audio-card,name = "rockchip,es7210";
simple-audio-card,mclk-fs = <256>;
simple-audio-card,cpu {
sound-dai = <&i2s_8ch_0>;
};
simple-audio-card,codec {
sound-dai = <&es7210>;
};
};
&i2s_8ch_0 {
status = "okay";
rockchip,no-dmaengine;
#sound-dai-cells = <0>;
};
&i2s_8ch_1 {
status = "okay";
#sound-dai-cells = <0>;
rockchip,no-dmaengine;
pinctrl-names = "default";
pinctrl-0 = <&i2s_8ch_1_m0_sclktx
&i2s_8ch_1_m0_lrcktx
&i2s_8ch_1_m0_sdo0
&i2s_8ch_1_m0_mclk>;
};
&i2c3 {
status = "okay";
pinctrl-0 = <&i2c3m1_xfer>;
clock-frequency = <100000>;
es7210: es7210@41 {
#sound-dai-cells = <0>;
compatible = "MicArray_3";
reg = <0x41>;
clocks = <&cru SCLK_I2S0_8CH_TX_OUT>;
clock-names = "mclk";
pinctrl-names = "default";
};
};
驱动等已正常编译加载，但无法正常生成声卡，log提示platform name 为空，仔细跟踪后发现没有调用过snd_soc_register_platform函数，不知道在哪里增加这部分。
[ 1.591878] snd-soc-dummy snd-soc-dummy: snd_soc_dummy_probe
[ 1.591899] snd-soc-dummy snd-soc-dummy: codec register snd-soc-dummy
[ 1.591923] snd-soc-dummy snd-soc-dummy: ASoC: dai register snd-soc-dummy #1
[ 1.591939] snd-soc-dummy snd-soc-dummy: ASoC: Registered DAI 'snd-soc-dummy-dai'
[ 1.591954] snd-soc-dummy snd-soc-dummy: ASoC: Registered codec 'snd-soc-dummy'
[ 1.591967] snd-soc-dummy snd-soc-dummy: ASoC: platform register snd-soc-dummy
[ 1.591981] snd-soc-dummy snd-soc-dummy: ASoC: snd_soc_add_platform '(null)'
[ 1.591997] snd-soc-dummy snd-soc-dummy: ASoC: Registered platform 'snd-soc-dummy'
[ 1.592658] asoc-simple-card es7210-sound: New simple-card: rockchip,es7210
[ 1.592697] asoc-simple-card es7210-sound: Revert to legacy daifmt parsing
[ 1.594614] rockchip-i2s-tdm ff300000.i2s: devm_snd_soc_register_component
[ 1.594653] rockchip-i2s-tdm ff300000.i2s: ASoC: dai register ff300000.i2s #1
[ 1.594671] rockchip-i2s-tdm ff300000.i2s: ASoC: Registered DAI 'ff300000.i2s'
[ 1.595501] rockchip-i2s-tdm ff310000.i2s: devm_snd_soc_register_component
[ 1.595535] rockchip-i2s-tdm ff310000.i2s: ASoC: dai register ff310000.i2s #1
[ 1.595553] rockchip-i2s-tdm ff310000.i2s: ASoC: Registered DAI 'ff310000.i2s'
[ 1.623008] es7210_modinit enter
[ 1.623106] mmc_host mmc0: Bus speed (slot 0) = 147456000Hz (slot req 150000000Hz, actual 147456000HZ div = 0)
[ 1.623174] begin->>>>>>>>>>es7210_i2c_probe!
[ 1.623186] i2c info: i2c flags = 0 i2c addr=41 i2c name=MicArray_3
[ 1.623194] i2c info:device id = MicArray_3
[ 1.623209] es7210 3-0041: codec register 3-0041
[ 1.623243] es7210 3-0041: ASoC: dai register 3-0041 #1
[ 1.623255] es7210 3-0041: ASoC: Registered DAI 'ES7210 4CH ADC 3'
[ 1.623269] es7210 3-0041: ASoC: Registered codec 'es7210.3-0041'
[ 1.623656] asoc-simple-card es7210-sound: New simple-card: rockchip,es7210
[ 1.623691] asoc-simple-card es7210-sound: Revert to legacy daifmt parsing
[ 1.623889] asoc-simple-card es7210-sound: name : ff300000.i2s-ES7210 4CH ADC 3
[ 1.623904] asoc-simple-card es7210-sound: format : 4001
[ 1.623915] asoc-simple-card es7210-sound: cpu : ff300000.i2s / 50176000
[ 1.623926] asoc-simple-card es7210-sound: codec : ES7210 4CH ADC 3 / 50176000
[ 1.623939] of_get_named_gpiod_flags: can't parse 'simple-audio-card,hp-det-gpio' property of node '/es7210-sound'
[ 1.623950] of_get_named_gpiod_flags: can't parse 'simple-audio-card,mic-det-gpio' property of node '/es7210-sound'
[ 1.623971] asoc-simple-card es7210-sound: ASoC: binding ff300000.i2s-ES7210 4CH ADC 3 at idx 0
[ 1.623985] asoc-simple-card es7210-sound: platform_name: (null)
[ 1.623997] asoc-simple-card es7210-sound: platform_name: (null) platform->component.name:snd-soc-dummy
[ 1.624009] asoc-simple-card es7210-sound: ASoC: platform (null) not registered
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