Here are the pieces from my .dts:
----
sound {
compatible = "fsl,imx6-emx6-wm9712";
model = "imx6-emx6-wm9712";
ssi-controller = <&ssi1>;
audio-routing =
"Headphone", "HPOUTL",
"Headphone", "HPOUTR",
"LineIn", "LINEINL",
"LineIn", "LINEINR",
"Mic", "MIC1";
mux-int-port = <1>;
mux-ext-port = <4>;
};
…
pinctrl_audmux: audmuxgrp {
fsl,pins = <
MX6QDL_PAD_SD2_DAT0__AUD4_RXD 0x130b0
MX6QDL_PAD_SD2_DAT1__AUD4_TXFS 0x130b0
MX6QDL_PAD_SD2_DAT2__AUD4_TXD 0x110b0
MX6QDL_PAD_SD2_DAT3__AUD4_TXC 0x130b0
>;
};
ac97link_reset: audmuxgrp_reset {
fsl,pins = <
MX6QDL_PAD_SD2_DAT1__GPIO1_IO14 0x1b0b0
MX6QDL_PAD_SD2_DAT2__GPIO1_IO13 0x1b0b0
>;
};
ac97link_warm_reset: audmuxgrp_warmreset {
fsl,pins = <
MX6QDL_PAD_SD2_DAT1__GPIO1_IO14 0x1b0b0
>;
};
…
&ssi1 {
pinctrl-names = "default", "ac97-running", "ac97-reset",
"ac97-warm-reset";
pinctrl-0 = <&pinctrl_audmux>;
pinctrl-1 = <&pinctrl_audmux>;
pinctrl-2 = <&ac97link_reset>;
pinctrl-3 = <&ac97link_warm_reset>;
/* sync, sdata, reset */
ac97-gpios = <
&gpio1 14 0
&gpio1 13 0
&gpio7 13 0>;
fsl,mode = "ac97-slave";
fsl,fiq-stream-filter;
fsl,ssi-asynchronous;
status = "okay";
};
----
I cherry-picked "ASoC: fsl-ssi: Support for SND_SOC_DAIFMT_CBM_CFS" and set in fsl_ssi_probe() to
ssi_private->dai_fmt = SND_SOC_DAIFMT_AC97 | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFS;
With this change I hear the codec powering up and down during playback and I see that the codec supplies the bitclock. However I see no action from the IMX nor do I see that the SSI-FIFO is beeing filled. Does someone know what needs to be done for SSI to start filling the FIFO?
