Greetings,
I am trying to get audio working using the WM8960 codec present on the MCIMX7SABRE development board. I have downloaded this SD card image:
fsl-image-machine-test-imx7dsabresd-20180428-96.rootfs.sdcard.gz
Looking through the boot messages, I see the following:
imx-wm8960 sound: failed to get gpr property
imx-wm8960: probe of sound failed with error -2
imx-sii902x sound-hdmi: snd-soc-dummy-dai <-> 308c0000.sai mapping ok
and only the sound-hdmi device shows up when looking at /proc/asound/pcm
looking at the source code (imx-wm8960.c), I see that the failure occurs here:
if (ret) {
dev_err(&pdev->dev, "failed to get gpr property\n");
goto fail;
} else {
data->gpr = syscon_node_to_regmap(args.np);
if (IS_ERR(data->gpr)) {
ret = PTR_ERR(data->gpr);
dev_err(&pdev->dev, "failed to get gpr regmap\n");
goto fail;
}
regmap_update_bits(data->gpr, args.args[0], args.args[1], args.args[2]);
}
decompiling the device tree blob (imx7d-sdb.dtb), I see the following definition for "sound":
sound {
compatible = "fsl,imx7d-evk-wm8960", "fsl,imx-audio-wm8960";
model = "wm8960-audio";
cpu-dai = <0x66>;
audio-codec = <0x67>;
codec-master;
hp-det = <0x2 0x0>;
hp-det-gpios = <0x39 0x1c 0x0>;
audio-routing = "Headphone Jack", "HP_L", "Headphone Jack", "HP_R", "Ext Spk", "SPK_LP", "Ext Spk", "SPK_LN", "Ext Spk", "SPK_RP", "Ext Spk", "SPK_RN", "LINPUT1", "Main MIC",
"Main MIC", "MICB";
assigned-clocks = <0x1 0x14b 0x1 0x14a>;
assigned-clock-parents = <0x1 0x1ae>;
assigned-clock-rates = <0x0 0xbb8000>;
};
but there is no definition for gpr. Does anyone have any hints as to how to make the imx-wm8960 driver work correctly? I am attaching a log of the boot messages.
Thanks!!
