SGTL5000 on i.MX6 in I2S master mode

[Jean-Michel Hautbois]

Hi,

I have a custom i.MX6 board, and have a sgtl5000 connected on it. I
would like to have it used in master mode (it is used only for audio
capture) but I get a "pcm_read:2031: read error: Input/output error"
when using arecord.
I am wondering if I forgot something in my DT or if I need to do
something else :

sound {
compatible = "fsl,imx6q-vbx3-sgtl5000",
"fsl,imx-audio-sgtl5000";
model = "imx6q-vbx3-sgtl5000";
ssi-controller = <&ssi1>;
audio-codec = <&codec>;
audio-routing =
"LINE_IN", "Line In Jack";
mux-int-port = <1>;
mux-ext-port = <5>;
};

&audmux {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_audmux>;
status = "okay";
};

&i2c2 {
clock-frequency = <100000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c2>;
status = "okay";

codec: ***@0a {
compatible = "fsl,sgtl5000";
reg = <0x0a>;
clocks = <&clks 201>;
VDDA-supply = <&vgen6_reg>;
VDDIO-supply = <&vgen6_reg>;
sysclk = <24000000>;
};
};

&iomuxc {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_hog>;

imx6qdl-vbx3 {
pinctrl_audmux: audmuxgrp {
fsl,pins = <
MX6QDL_PAD_DISP0_DAT13__AUD5_RXFS 0x130b0
MX6QDL_PAD_DISP0_DAT14__AUD5_RXC 0x130b0
MX6QDL_PAD_DISP0_DAT16__AUD5_TXC 0x130b0
MX6QDL_PAD_DISP0_DAT18__AUD5_TXFS 0x130b0
MX6QDL_PAD_DISP0_DAT19__AUD5_RXD 0x130b0

;

};
};

&ssi1 {
status = "okay";
codec-handle = <&codec>;
fsl,mode = "i2s-master";
fsl,ssi-asynchronous;
};

FYI, AUD5_TXC is wirely connected to AUD5_RXC and AUD5_TXFS is
connected to AUD5_RXFS.

Here is the dmesg part :
[ 6.026803] sgtl5000 1-000a: sgtl5000 revision 0x11
[ 6.129380] imx-sgtl5000 sound: snd_soc_register_card failed (-517)
[ 6.248849] platform sound: Driver imx-sgtl5000 requests probe deferral
[ 6.311643] sgtl5000 1-000a: Using internal LDO instead of VDDD
[ 6.393196] imx-sgtl5000 sound: sgtl5000 <-> 2028000.ssi mapping ok

And the user space commands :
$> arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: imx6qvbx3sgtl50 [imx6q-vbx3-sgtl5000], device 0: HiFi sgtl5000-0 []
Subdevices: 1/1
Subdevice #0: subdevice #0

$> arecord -v -V stereo -fdat -D hw:0,0 somefile.wav
Recording WAVE 'somefile.wav' : Signed 16 bit Little Endian, Rate
48000 Hz, Stereo
Hardware PCM card 0 'imx6q-vbx3-sgtl5000' device 0 subdevice 0
Its setup is:
stream : CAPTURE
access : RW_INTERLEAVED
format : S16_LE
subformat : STD
channels : 2
rate : 48000
exact rate : 48000 (48000/1)
msbits : 16
buffer_size : 16384
period_size : 4096
period_time : 85333
tstamp_mode : NONE
period_step : 1
avail_min : 4096
period_event : 0
start_threshold : 1
stop_threshold : 16384
silence_threshold: 0
silence_size : 0
boundary : 1073741824
appl_ptr : 0
hw_ptr : 0
arecord: pcm_read:2031: read error: Input/output error

The kernel is 3.17-rc5.

Thanks for reading all this, and for any advice :).
JM