TLV320AIC34 audio codec with IMX8MP SoM

mathad22 — Tue, 05 Oct 2021 20:03:20 GMT

Hi,

I would like to connect my Variscite DT8M Custom Board with the TLV320AIC34 Evaluation Module by using an I2S connection.

For an unknow reason I cannot see SAI2_MCLK1 working properly, the value is always '0' on my oscilloscope, therefore when I try to play audio, aplay seems to be blocked.

HW configuration :

SAI vs Codec SAI2_TXC <-> BCLK SAI2_TXFS <-> WCLK SAI2_MCLK <-> MCLK SAI2_RXD0 <-> DIN SAI2_TXD0 <-> DOUT

My device tree configuration :

reg_audio_1v8: regulator-1p8v { compatible = "regulator-fixed"; regulator-name = "1P8V"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; regulator-always-on; }; sound-tlv320aic34 { compatible = "simple-audio-card"; simple-audio-card,name = "HTC2-Sound-Card"; simple-audio-card,format = "i2s"; simple-audio-card,bitclock-master = <&dailink0_master>; simple-audio-card,frame-master = <&dailink0_master>; simple-audio-card,widgets = "Microphone", "Microphone Jack", "Line", "Line In Jack", "Line", "Line Out Jack", "Headphone", "Headphone Jack", "Speaker", "Speaker External"; simple-audio-card,routing = "MIC3L", "Microphone Jack", "MIC3R", "Microphone Jack", "Headphone Jack", "HPLOUT", "Headphone Jack", "HPROUT"; simple-audio-card,cpu { sound-dai = <&sai2 0>; }; dailink0_master: simple-audio-card,codec { sound-dai = <&tlv320aic34>; }; }; }; &sai2 { #sound-dai-cells = <1>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_sai2>; clocks = <&audiomix_clk IMX8MP_CLK_AUDIOMIX_SAI2_IPG>, <&clk IMX8MP_CLK_DUMMY>, <&audiomix_clk IMX8MP_CLK_AUDIOMIX_SAI2_MCLK1>, <&clk IMX8MP_CLK_DUMMY>, <&clk IMX8MP_CLK_DUMMY>, <&clk IMX8MP_AUDIO_PLL1_OUT>, <&clk IMX8MP_AUDIO_PLL2_OUT>; clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3", "pll1", "pll2"; assigned-clocks = <&clk IMX8MP_CLK_SAI2>; assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL2_OUT>; assigned-clock-rates = <12000000>; fsl,sai-asynchronous; fsl,sai-mclk-direction-output; status = "okay"; }; pinctrl_sai2: sai2grp { fsl,pins = < MX8MP_IOMUXC_SAI2_TXFS__AUDIOMIX_SAI2_TX_SYNC 0xd6 MX8MP_IOMUXC_SAI2_TXC__AUDIOMIX_SAI2_TX_BCLK 0xd6 MX8MP_IOMUXC_SAI2_RXD0__AUDIOMIX_SAI2_RX_DATA00 0xd6 MX8MP_IOMUXC_SAI2_TXD0__AUDIOMIX_SAI2_TX_DATA00 0xd6 MX8MP_IOMUXC_SAI2_MCLK__AUDIOMIX_SAI2_MCLK 0xd6 >; };

i2cdump :

root@imx8mp-var-dart:~# i2cdump -y -f 2 0x18 No size specified (using byte-data access) 0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef 00: 00 00 00 10 04 00 00 00 00 00 00 01 00 00 00 80 ...??......?...? 10: 80 ff ff 78 78 78 78 78 78 06 00 fe 00 00 fe 00 ?..xxxxxx?.?..?. 20: 00 00 00 00 00 00 00 00 00 00 00 80 80 00 00 00 ...........??... 30: 00 00 00 04 00 00 00 00 00 00 04 00 00 00 00 00 ...?......?..... 40: 00 04 00 00 00 00 00 00 04 00 00 00 00 00 00 00 .?......?....... 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 60: 00 00 00 00 00 00 02 00 00 00 00 00 00 00 00 00 ......?......... 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 80: 00 00 00 10 04 00 00 00 00 00 00 01 00 00 00 80 ...??......?...? 90: 80 ff ff 78 78 78 78 78 78 06 00 fe 00 00 fe 00 ?..xxxxxx?.?..?. a0: 00 00 00 00 00 00 00 00 00 00 00 80 80 00 00 00 ...........??... b0: 00 00 00 04 00 00 00 00 00 00 04 00 00 00 00 00 ...?......?..... c0: 00 04 00 00 00 00 00 00 04 00 00 00 00 00 00 00 .?......?....... d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ e0: 00 00 00 00 00 00 02 00 00 00 00 00 00 00 00 00 ......?......... f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

/sys/clk/kernel/debug/clk_summary :

audio_pll2_ref_sel 0 0 0 24000000 0 0 50000 audio_pll2 0 0 0 361267200 0 0 50000 audio_pll2_bypass 0 0 0 361267200 0 0 50000 audio_pll2_out 0 0 0 361267200 0 0 50000 sai2 0 0 0 12042240 0 0 50000 sai2_mclk1_sel 0 0 0 12042240 0 0 50000 sai2_mclk1_clk 0 0 0 12042240 0 0 50000

Any idea that could help ? I've tried many things but the SAI2_MCLK1 is still not moving.

Re: TLV320AIC34 audio codec with IMX8MP SoM

mathad22 — Fri, 15 Oct 2021 14:01:16 GMT

sound-tlv320aic34 {
compatible = "simple-audio-card";
simple-audio-card,name = "HTC2-Sound-Card";
simple-audio-card,format = "i2s";
simple-audio-card,bitclock-master = <&dailink_master>;
simple-audio-card,frame-master = <&dailink_master>;
simple-audio-card,mclk-fs = <256>;
simple-audio-card,widgets =
"Microphone", "Microphone Jack",
"Line", "Line In Jack",
"Line", "Line Out Jack",
"Headphone", "Headphone Jack",
"Speaker", "Speaker External";
simple-audio-card,routing =
"Headphone Jack", "HPLOUT",
"Headphone Jack", "HPROUT";
dailink_master: simple-audio-card,cpu {
sound-dai = <&sai2>;
};
simple-audio-card,codec {
sound-dai = <&tlv320aic34>;
clocks = <&audiomix_clk IMX8MP_CLK_AUDIOMIX_SAI2_MCLK1>;
};
};
};

&sai2 {
#sound-dai-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sai2>;
assigned-clocks = <&clk IMX8MP_CLK_SAI2>;
assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL1_OUT>;
assigned-clock-rates = <12288000>;
clocks = <&audiomix_clk IMX8MP_CLK_AUDIOMIX_SAI2_IPG>, <&clk IMX8MP_CLK_DUMMY>,
<&audiomix_clk IMX8MP_CLK_AUDIOMIX_SAI2_MCLK1>, <&clk IMX8MP_CLK_DUMMY>,
<&clk IMX8MP_CLK_DUMMY>, <&clk IMX8MP_AUDIO_PLL1_OUT>,
<&clk IMX8MP_AUDIO_PLL2_OUT>;
clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3", "pll8k", "pll11k";
fsl,sai-synchronous-rx;
status = "okay";
};

&i2c3 {
tlv320aic34: tlv320aic34@18 {
#sound-dai-cells = <0>;
compatible = "ti,tlv320aic3x";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_tlv320>;
reg = <0x18>;
reset-gpios = <&gpio1 6 GPIO_ACTIVE_LOW>;
IOVDD-supply = <&reg_audio>; /* 3V3 */
DVDD-supply = <&reg_audio_1v8>; /* 1V8 */
AVDD-supply = <&reg_audio>; /* 3V3 */
DRVDD-supply = <&reg_audio>; /* 3V3 */
};
};

pinctrl_sai2: sai2grp {
fsl,pins = <
MX8MP_IOMUXC_SAI2_MCLK__AUDIOMIX_SAI2_MCLK 0xd6
MX8MP_IOMUXC_SAI2_RXD0__AUDIOMIX_SAI2_RX_DATA00 0xd6
MX8MP_IOMUXC_SAI2_RXFS__AUDIOMIX_SAI2_RX_SYNC 0xd6
MX8MP_IOMUXC_SAI2_TXC__AUDIOMIX_SAI2_TX_BCLK 0xd6
MX8MP_IOMUXC_SAI2_TXD0__AUDIOMIX_SAI2_TX_DATA00 0xd6
>;
};

pinctrl_tlv320: tlv320grp {
fsl,pins = <
MX8MP_IOMUXC_GPIO1_IO06__GPIO1_IO06 0x16
>;
};

i.MX ProcessorsのトピックRe: TLV320AIC34 audio codec with IMX8MP SoM

TLV320AIC34 audio codec with IMX8MP SoM

Re: TLV320AIC34 audio codec with IMX8MP SoM