Hi NXP team,
Environment: i.MX6 SoloLite, Linux kernel 4.9.17
I am using the ALC5640 codec, currently set in codec master mode. When playing a 48kHz WAV file, I can see LRCK = 48kHz and BCLK = 3,072,000Hz on the oscilloscope, but there is no sound output from the speaker. Could you please help me identify the issue?
Thanks for your help!
The clocks are as follows:
pll4 0 0 147456000 0 0
pll4_bypass 0 0 147456000 0 0
pll4_audio 0 0 147456000 0 0
pll4_post_div 0 0 36864000 0 0
pll4_audio_div 0 0 36864000 0 0
pll3 1 1 480000000 0 0
pll3_bypass 1 1 480000000 0 0
pll3_usb_otg 3 3 480000000 0 0
extern_audio_sel 1 1 480000000 0 0
extern_audio_pred 1 1 60000000 0 0
extern_audio_podf 1 1 12000000 0 0
extern_audio 1 1 12000000 0 0
The related registers read with memtool are as follows:
Reading register: SSI2_SCR (Address: 202c010)
E
Reading 0x1 count starting at address 0x0202C010
0x0202C010: 0000115B
Reading register: SSI2_STCR (Address: 202c01c)
E
Reading 0x1 count starting at address 0x0202C01C
0x0202C01C: 0000038D
Reading register: SSI2_STCCR (Address: 202c024)
E
Reading 0x1 count starting at address 0x0202C024
0x0202C024: 0004E100
Reading register: CCM_CCGR5 (Address: 20c407c)
E
Reading 0x1 count starting at address 0x020C407C
0x020C407C: FF330FFF
The DTS settings are as follows:
sound {
compatible = "fsl,imx-audio-rt5640";
model = "rt5640-audio";
audio-cpu = <&ssi2>;
audio-codec = <&rt5640>;
audio-routing =
"Ext Spk", "MONOP",
"Ext Spk", "MONON";
mux-int-port = <2>;
mux-ext-port = <3>;
codec-master;
};
&ssi2 {
assigned-clocks = <&clks IMX6SL_CLK_SSI2_SEL>,
<&clks IMX6SL_CLK_SSI2>;
status = "okay";
};
&audmux {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_audmux3>;
status = "okay";
};
pinctrl_audmux3: audmux3grp {
fsl,pins = <
MX6SL_PAD_AUD_MCLK__AUDIO_CLK_OUT 0x0130b0
MX6SL_PAD_AUD_RXD__AUD3_RXD 0x0130b0
MX6SL_PAD_AUD_TXC__AUD3_TXC 0x0130b0
MX6SL_PAD_AUD_TXD__AUD3_TXD 0x0130b0
MX6SL_PAD_AUD_TXFS__AUD3_TXFS 0x0130b0
>;
};
rt5640: rt5640@1c {
compatible = "realtek,rt5640";
reg = <0x1c>;
clocks = <&clks IMX6SL_CLK_EXTERN_AUDIO>;
clock-names = "mclk";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_codec_pwr>;
realtek,ldo1-en-gpios = <&gpio4 2 GPIO_ACTIVE_HIGH>;
status = "okay";
};
