On 09/29/2015 04:26 PM, Alexandre Schnegg wrote:
Hello,
After a few researches, it seems to me that the problem come from the DMA. The SSI is set up correctly and waits for data from the DMA, but the DMA doesn't not seem to to do his job.
Does anyone can confirm me that the module imx_pcm_dma is working properly with Freescale imx27 and mainline kernel?
Anyone has got an audio codec working with the Freescale imx27 and mainline kernel?
Thank you in advance for your help.
Best regards Alexandre Schnegg
Le 15.09.2015 11:49, Alexandre Schnegg a écrit :
Hello,
I would like to use the Freescale SGTl5000 audio codec with the Freescale imx27 processor.
I faced a problem like that but in the opposite way: I was unable to record anything from mic or line-in. I saw all logic levels running, but no interrupt never catched by the driver. Because of the CLKMUX_SEL was not set. Strangely it worked in playback mode. But not for record. :-/
Have you read this?
https://community.freescale.com/message/540885#540885
I had finally got a solution to this issue: the HW_DIGCTL_CTRL_SAIF_CLKMUX_SEL was not set.
On the platform init code you have to call:
mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0);
Obviously the correct function for iMX27 will be to find in:
drivers/clk/imx/clk-imx27.c
Good luck.
Unfortunately, I get this error when I try to run < speaker-test >:
# speaker-test
speaker-test 1.0.28
Playback device is default
Stream parameters are 48000Hz, S16_LE, 1 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 128 to 32768
Period size range from 64 to 16384
Using max buffer size 32768
Periods = 4
was set period_size = 8192
was set buffer_size = 32768
0 - Front Left
Write error: -5,Input/output error
xrun_recovery failed: -5,Input/output error
Transfer failed: Input/output error
The codec is connected to SSI2 pins and I would like to use the SSI0 internal port in asynchronous mode (4 wires). The command interface is I2C1. The codec seems to work because it generates both bit and frame clocks (the codec is the master) but no data are coming from the processor. I'm using kernel 4.1.7 but I have got the same error with versions 3.19.8, 4.0.5 and 4.0.9. I have also tried the < imx-sgtl5000 > driver and I get the same error. I can use < alsamixer > with no issue.
Here are my device tree bindings:
sound { compatible = "simple-audio-card"; simple-audio-card,name ="sgtl5000-audio";
simple-audio-card,format = "i2s"; simple-audio-card,bitclock-master =<&dailink0_master>;
simple-audio-card,frame-master =<&dailink0_master>;
simple-audio-card,widgets = "Microphone", "Mic Jack", "Headphone", "HeadphoneJack";
simple-audio-card,routing = "MIC_IN", "Mic Jack", "Mic Jack", "Mic Bias", "Headphone Jack","HP_OUT";
simple-audio-card,cpu { sound-dai = <&ssi1 0>; }; dailink0_master:simple-audio-card,codec {
sound-dai = <&sgtl5000>; clocks = <&mclk>; }; }; mclk: asvmpc { #clock-cells = <0>; compatible = "fixed-clock"; clock-frequency = <12288000>; };&ssi1 {
#sound-dai-cells = <1>; status = "okay"; fsl,audmux-port = <MX27_AUDMUX_PPCR2_SSI_PINS_2>; fsl,port-config = < (IMX_AUDMUX_V1_PCR_SYN |IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0))
>;};
&audmux {
pinctrl-names = "default"; pinctrl-0 = <&pinctrl_ssi2>; status = "okay"; fsl,audmux-port = <MX27_AUDMUX_HPCR1_SSI0>; fsl,port-config = < (IMX_AUDMUX_V1_PCR_SYN |IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_PPCR2_SSI_PINS_2) |
IMX_AUDMUX_V1_PCR_TFSDIR | IMX_AUDMUX_V1_PCR_TCLKDIR |IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_PPCR2_SSI_PINS_2))
>;};
&i2c1 {
clock-frequency = <100000>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_i2c1>; status = "okay"; sgtl5000: sgtl5000@0a { #sound-dai-cells = <0>; compatible = "fsl,sgtl5000"; reg = <0x0a>; clocks = <&mclk>; micbias-resistor-k-ohms = <2>; micbias-voltage-m-volts = <2250>; VDDA-supply = <®_2p8v>; VDDIO-supply = <®_2p8v>; };};
pinctrl_ssi2: ssi2grp {
fsl,pins = <MX27_PAD_SSI2_FS__SSI2_FS 0x0
MX27_PAD_SSI2_RXDAT__SSI2_RXDAT 0x0
MX27_PAD_SSI2_TXDAT__SSI2_TXDAT 0x0
MX27_PAD_SSI2_CLK__SSI2_CLK 0x0
>; };And the modules I have loaded before running < speaker test > :
# modprobe snd-soc-sgtl5000
[ 23.274351] sgtl5000 0-000a: sgtl5000 revision 0x11
# modprobe snd-soc-simple-card
# modprobe snd-soc-fsl-ssi
[ 79.752288] sgtl5000 0-000a: Using internal LDO instead of VDDD
# [ 79.853711] asoc-simple-card sound: sgtl5000 <-> 10010000.ssi mapping ok
# modprobe snd-soc-imx-audmux
Does anybody know what is the mistake?
Thank you for your help.
Best regards.
Alexandre Schnegg
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