[PATCH RFC v2 11/11] arm64: dts: amlogic: odroid-c2: add support for I2S audio input

[Valerio Setti <vsetti@baylibre.com>]

- Enable AUDIN I2S decoder and all FIFO components;
- Add AUDIN I2S Decoder as AUX device to the GX sound card;
- Add AUDIN Capture frontend DAIs in the GX sound card;
- Add I2S input data routing to the GX sound card.

Note: in the routing part, usage of "AIU I2S Encoder Capture" as source
for "AUDIN I2S Decoder IN" is fine (despite the Encoder/Decoder mismatch).
This belong to the fact that the interface is implemented by "AIU I2S
Encoder", which was already existing (and named) before the AUDIN addition.

Signed-off-by: Valerio Setti <vsetti@baylibre.com>
---
 .../arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts | 34 ++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
index 5943bc810678edc81fe1a8e3eeae69786e27010c..54798e5b631fdc594cabc5876ab73a3a85944ab0 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
@@ -188,6 +188,12 @@ sound {
 				       <270950400>,
 				       <393216000>;
 
+		audio-aux-devs = <&audin_decoder_i2s>;
+		audio-routing = "AUDIN I2S Decoder IN", "AIU I2S Encoder Capture",
+				"AUDIN FIFO0 I2S IN", "AUDIN I2S Decoder OUT",
+				"AUDIN FIFO1 I2S IN", "AUDIN I2S Decoder OUT",
+				"AUDIN FIFO2 I2S IN", "AUDIN I2S Decoder OUT";
+
 		dai-link-0 {
 			sound-dai = <&aiu AIU_CPU CPU_I2S_FIFO>;
 		};
@@ -209,6 +215,18 @@ codec-0 {
 				sound-dai = <&hdmi_tx>;
 			};
 		};
+
+		dai-link-3 {
+			sound-dai = <&audin_fifo0>;
+		};
+
+		dai-link-4 {
+			sound-dai = <&audin_fifo1>;
+		};
+
+		dai-link-5 {
+			sound-dai = <&audin_fifo2>;
+		};
 	};
 };
 
@@ -216,6 +234,22 @@ &aiu {
 	status = "okay";
 };
 
+&audin_decoder_i2s {
+	status = "okay";
+};
+
+&audin_fifo0 {
+	status = "okay";
+};
+
+&audin_fifo1 {
+	status = "okay";
+};
+
+&audin_fifo2 {
+	status = "okay";
+};
+
 &cec_AO {
 	status = "okay";
 	pinctrl-0 = <&ao_cec_pins>;

-- 
2.39.5