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器件型号：TLV320AIC3106 大家好,音频论坛,我想分享 我的问题,当我把设备树和内核从 Linux 4.14移动到5.15。
我将 am335xx 作为基础并使用 TLV320AIC3106编解码器。 之前我使用的 Yocto dunfall 与内核4.14没有 任何问题与这些设备树配置。
/{
...
regulators {
compatible = "simple-bus";
vcc3v3: fixedregulator@1 {
compatible = "regulator-fixed";
regulator-name = "vcc3v3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
};
sound {
compatible = "ti,da830-evm-audio";
ti,model = "AM335x-EVM";
ti,audio-codec = <&audio_codec>;
ti,mcasp-controller = <&mcasp0>;
ti,codec-clock-rate = <12000000>;
ti,audio-routing =
"LINE1L", "Line In",
"LINE2L", "Line In",
"LINE1R", "Line In",
"LINE2R", "Line In";
clocks = <&mcasp0_fck>;
clock-names = "mclk";
};
};
&i2c0 {
audio_codec: tlv320aic3106@18 {
compatible = "ti,tlv320aic3106";
reg = <0x18>;
ai3x-micbias-vg = <0x0>;
status = "okay";
};
};
&am33xx_pinmux {
audio_pins: pinmux_audio {
pinctrl-single,pins = <
AM33XX_IOPAD(0x9AC, PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* mcasp0_ahclkx.mcasp0_ahclkx */
AM33XX_IOPAD(0x990, PIN_INPUT_PULLDOWN | MUX_MODE0) /* mcasp0_aclkx.mcasp0_aclkx */
AM33XX_IOPAD(0x994, PIN_INPUT_PULLDOWN | MUX_MODE0) /* mcasp0_fsx.mcasp0_fsx */
AM33XX_IOPAD(0x998, PIN_INPUT_PULLDOWN | MUX_MODE0) /* mcasp0_axr0.mcasp0_axr0 */
AM33XX_IOPAD(0x9A8, PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* mcasp0_axr1.mcasp0_axr1 */
>;
};
};
&mcasp0 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&audio_pins>;
op-mode = <0>; /* MCASP_ISS_MODE */
tdm-slots = <2>;
serial-dir = <
2 1 0 0
>;
tx-num-evt = <2>;
rx-num-evt = <2>;
};
...我可以使用播放来捕获声音、 # aplay -vvv -C -D hw:0,0 -r 16000 -f S16_LE -c 2 /tmp/a.wav Recording WAVE '/tmp/a.wav' : Signed 16 bit Little Endian, Rate 16000 Hz, Stereo Hardware PCM card 0 'AM335x-EVM' device 0 subdevice 0 Its setup is: stream : CAPTURE access : RW_INTERLEAVED format : S16_LE subformat : STD channels : 2 rate : 16000 exact rate : 16000 (16000/1) msbits : 16 buffer_size : 8000 period_size : 2000 period_time : 125000 tstamp_mode : NONE tstamp_type : MONOTONIC period_step : 1 avail_min : 2000 period_event : 0 start_threshold : 1 stop_threshold : 8000 silence_threshold: 0 silence_size : 0 boundary : 2097152000 appl_ptr : 0 hw_ptr : 0 Max peak (4000 samples): 0x000000d0 # 0% Max peak (4000 samples): 0x000000f1 # 0% Max peak (4000 samples): 0x000000d4 # 0% Max peak (4000 samples): 0x000000d6 # 0% Max peak (4000 samples): 0x000000db # 0% Max peak (4000 samples): 0x000000d2 # 0% Max peak (4000 samples): 0x0000017d # 1% Max peak (4000 samples): 0x0000013e # 0% Max peak (4000 samples): 0x00000154 # 1% Max peak (4000 samples): 0x00000149 # 1% Max peak (4000 samples): 0x00000160 # 1% lsmod: ~# lsmod Module Size Used by cn 16384 1 snd_soc_evm 16384 1 snd_soc_davinci_mcasp 24576 2 snd_soc_tlv320aic3x 49152 1 snd_soc_edma 16384 1 snd_soc_davinci_mcasp snd_soc_omap 16384 1 snd_soc_davinci_mcasp snd_soc_core 118784 5 snd_soc_davinci_mcasp,snd_soc_edma,snd_soc_evm,snd_soc_omap,snd_soc_tlv320aic3x snd_pcm_dmaengine 16384 2 snd_soc_omap,snd_soc_core snd_pcm 81920 6 snd_soc_davinci_mcasp,snd_pcm_dmaengine,snd_soc_omap,snd_soc_core,snd_soc_tlv320aic3x snd_timer 28672 1 snd_pcm snd 49152 4 snd_timer,snd_soc_core,snd_pcm soundcore 16384 1 snd cpufreq_dt 16384 0 cryptodev 45056 0
当我们尝试使用最新的简单音频卡驱动程序时、情况就发生了变化。
\ {
regulators {
compatible = "simple-bus";
vcc3v3: fixedregulator@1 {
compatible = "regulator-fixed";
regulator-name = "vcc3v3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
};
sound {
compatible = "simple-audio-card";
simple-audio-card,name = "snd-ddi";
simple-audio-card,widgets =
"Line", "Line In";
simple-audio-card,routing =
"LINE1L", "Line In",
"LINE2L", "Line In",
"LINE1R", "Line In",
"LINE2R", "Line In";
simple-audio-card,format = "i2s";
simple-audio-card,bitclock-master = <&sound_codec>;
simple-audio-card,frame-master = <&sound_codec>;
simple-audio-card,mclk-fs = <32>;
sound_cpu: simple-audio-card,cpu {
sound-dai = <&mcasp0>;
};
sound_codec: simple-audio-card,codec {
sound-dai = <&tlv320aic3106>;
clocks = <&mcasp0_fck>;
};
};
};
&i2c0 {
tlv320aic3106: tlv320aic3106@18 {
#sound-dai-cells = <0>;
compatible = "ti,tlv320aic3106";
reg = <0x18>;
status = "okay";
/* Regulators */
AVDD-supply = <&vcc3v3>;
IOVDD-supply = <&vcc3v3>;
DRVDD-supply = <&vcc3v3>;
DVDD-supply = <&vdig1_reg>;
};
};
&vdig1_reg {
regulator-boot-on;
regulator-always-on;
};
&mcasp0 {
#sound-dai-cells = <0>;
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&mcasp0_pins>;
op-mode = <0>; /* MCASP_ISS_MODE */
tdm-slots = <2>;
serial-dir = <
2 1 0 0
>;
tx-num-evt = <2>;
rx-num-evt = <2>;
}; 对于该 DTS、我始终会收到 PCM_Read 错误、 ~# lsmod Module Size Used by snd_soc_simple_card 16384 1 snd_soc_simple_card_utils 20480 1 snd_soc_simple_card snd_soc_davinci_mcasp 28672 2 snd_soc_ti_udma 16384 1 snd_soc_davinci_mcasp snd_soc_ti_edma 16384 1 snd_soc_davinci_mcasp snd_soc_ti_sdma 16384 1 snd_soc_davinci_mcasp snd_soc_tlv320aic3x_i2c 16384 1 snd_soc_tlv320aic3x 53248 1 snd_soc_tlv320aic3x_i2c snd_soc_core 147456 7 snd_soc_davinci_mcasp,snd_soc_simple_card_utils,snd_soc_ti_sdma,snd_soc_ti_edma,snd_soc_tlv320aic3x,snd_soc_ti_udma,snd_soc_simple_card snd_pcm_dmaengine 16384 1 snd_soc_core snd_pcm 94208 5 snd_soc_davinci_mcasp,snd_pcm_dmaengine,snd_soc_core,snd_soc_tlv320aic3x snd_timer 28672 1 snd_pcm snd 57344 4 snd_timer,snd_soc_core,snd_pcm soundcore 16384 1 snd cfg80211 307200 0 cpufreq_dt 16384 0 ~# aplay -vvv -C -D hw:0,0 -r 16000 -f S16_LE -c 2 /tmp/a.wav Recording WAVE '/tmp/a.wav' : Signed 16 bit Little Endian, Rate 16000 Hz, Stereo Hardware PCM card 0 'snd-ddi' device 0 subdevice 0 Its setup is: stream : CAPTURE access : RW_INTERLEAVED format : S16_LE subformat : STD channels : 2 rate : 16000 exact rate : 16000 (16000/1) msbits : 16 buffer_size : 8000 period_size : 2000 period_time : 125000 tstamp_mode : NONE tstamp_type : MONOTONIC period_step : 1 avail_min : 2000 period_event : 0 start_threshold : 1 stop_threshold : 8000 silence_threshold: 0 silence_size : 0 boundary : 2097152000 appl_ptr : 0 hw_ptr : 0 arecord: pcm_read:2221: read error: Input/output error
您有什么建议来调查和解决问题？ 我在这里用作参考： https://git.phytec.de/linux-mainline/tree/arch/arm/boot/dts/am335x-wega.dtsi?h=v5.15.82-phy
我们欢迎每一个答案、非常感谢
