Dear All,
I'm facing a problem with the integration of a sgtl5000 codec on our custom AM335x hardware. We're using linux kernel 3.12.10.
Playing a wave file or speaker-test is possible and works as expected. What goes wrong is the recording of the line in signal. Calling "arecord -f cd test.wav" produces an empty file although I have set the controls for recording via alsamixer (capture volume = max, capture source=LINE_IN). Unfortunatelly no error messages were displayed.
Any help would be appreciated.
Here are our modifications to the *.dts-file:
// Pinmuxing
mcasp0_pins: mcasp0_pins {
pinctrl-single,pins = <
0x190 (PIN_INPUT_PULLDOWN | MUX_MODE0) /* mcasp0_aclkx.mcasp0_aclkx */
0x194 (PIN_INPUT_PULLDOWN | MUX_MODE0) /* mcasp0_fsx.mcasp0_fsx */
0x198 (PIN_INPUT_PULLDOWN | MUX_MODE0) /* mcasp0_axr0.mcasp0_axr0 */
0x1a8 (PIN_INPUT_PULLDOWN | MUX_MODE0) /* mcasp0_axr1.mcasp0_axr1 */
>;
};
codec_pins: codec_pins {
pinctrl-single,pins = <
0x1b0 (PIN_OUTPUT | MUX_MODE3) /* xdma_event_intr0.clkout1 */
>;
};
...
// Sound
sound {
compatible = "ti,sgtl5000";
ti,model = "SGTL5000";
ti,audio-codec = <&sgtl5000>;
ti,mcasp-controller = <&mcasp0>;
ti,codec-clock-rate = <24000000>;
ti,audio-routing =
"Headphone Jack", "HPLOUT",
"Headphone Jack", "HPROUT",
"LINE1L", "Line In",
"LINE1R", "Line In";
};
...
// I2C
sgtl5000: sgtl5000@0a {
compatible = "fsl,sgtl5000";
reg = <0x0a>;
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&codec_pins>;
clocks = <&clk_24mhz>;
VDDA-supply = <&vaux33_reg>;
VDDIO-supply = <&vaux33_reg>;
VDDD-supply = <&vaux33_reg>;
};
...
//MCASP
&mcasp0 {
pinctrl-names = "default";
pinctrl-0 = <&mcasp0_pins>;
status = "okay";
op-mode = <0>; /* MCASP_IIS_MODE */
tdm-slots = <2>;
/* 4 serializer */
serial-dir = < /* 0: INACTIVE, 1: TX, 2: RX */
2 1 0 0
>;
tx-num-evt = <1>;
rx-num-evt = <1>;
};
Furthermore we've changed the davinci-evm.c:
static struct snd_soc_dai_link evm_dai_sgtl5000 = {
.name = "sgtl5000",
.stream_name = "SGTL5000",
.codec_dai_name = "sgtl5000",
.ops = &evm_ops,
.dai_fmt = (SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_IB_NF),
};
...
static const struct of_device_id davinci_evm_dt_ids[] = {
{
.compatible = "ti,da830-evm-audio",
.data = &evm_dai_tlv320aic3x,
},
{
.compatible = "ti,am33xx-beaglebone-black",
.data = &evm_dai_tda998x_hdmi,
},
{
.compatible = "ti,dra7xx-evm-audio",
.data = (void *) &dra7xx_evm_link,
},
{
.compatible = "ti,am43xx-epos-evm-audio",
.data = &evm_dai_tlv320aic3111,
},
{
.compatible = "ti,sgtl5000",
.data = &evm_dai_sgtl5000,
},
{ /* sentinel */ }
};
Here is the output from dmesg:
# dmesg | grep -i sgtl
[ 1.815346] sgtl5000 0-000a: sgtl5000 revision 0x11
[ 1.912585] sgtl5000 0-000a: Using internal LDO instead of VDDD
[ 1.928645] davinci_evm sound.3: sgtl5000 <-> 48038000.mcasp mapping ok
This is how we connected the codec:
