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[3/5] ASoC: meson: add tohdmitx DT bindings

Message ID 20190515131858.32130-4-jbrunet@baylibre.com
State Accepted
Commit e35f5ad6a965de5d301ca5957a1c48c53fe366fb
Headers show
Series ASoC: meson: add hdmitx glue support | expand

Commit Message

Jerome Brunet May 15, 2019, 1:18 p.m. UTC 
Add the bindings and the related documentation for the audio hdmitx
control glue of the Amlogic g12a SoC family

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>

---
 .../bindings/sound/amlogic,g12a-tohdmitx.txt  | 55 +++++++++++++++++++
 .../dt-bindings/sound/meson-g12a-tohdmitx.h   | 13 +++++
 2 files changed, 68 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/amlogic,g12a-tohdmitx.txt
 create mode 100644 include/dt-bindings/sound/meson-g12a-tohdmitx.h

-- 
2.20.1
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Patch

diff --git a/Documentation/devicetree/bindings/sound/amlogic,g12a-tohdmitx.txt b/Documentation/devicetree/bindings/sound/amlogic,g12a-tohdmitx.txt
new file mode 100644
index 000000000000..aa6c35570d31
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/amlogic,g12a-tohdmitx.txt
@@ -0,0 +1,55 @@ 
+* Amlogic HDMI Tx control glue
+
+Required properties:
+- compatible: "amlogic,g12a-tohdmitx"
+- reg: physical base address of the controller and length of memory
+       mapped region.
+- #sound-dai-cells: should be 1.
+
+Example on the S905X2 SoC:
+
+tohdmitx: audio-controller@744 {
+	compatible = "amlogic,g12a-tohdmitx";
+	reg = <0x0 0x744 0x0 0x4>;
+	#sound-dai-cells = <1>;
+};
+
+Example of an 'amlogic,axg-sound-card':
+
+sound {
+	compatible = "amlogic,axg-sound-card";
+
+[...]
+
+	dai-link-x {
+		sound-dai = <&tdmif_a>;
+		dai-format = "i2s";
+		dai-tdm-slot-tx-mask-0 = <1 1>;
+
+		codec-0 {
+			sound-dai = <&tohdmitx TOHDMITX_I2S_IN_A>;
+		};
+
+		codec-1 {
+			sound-dai = <&external_dac>;
+		};
+	};
+
+	dai-link-y {
+		sound-dai = <&tdmif_c>;
+		dai-format = "i2s";
+		dai-tdm-slot-tx-mask-0 = <1 1>;
+
+		codec {
+			sound-dai = <&tohdmitx TOHDMITX_I2S_IN_C>;
+		};
+	};
+
+	dai-link-z {
+		sound-dai = <&tohdmitx TOHDMITX_I2S_OUT>;
+
+		codec {
+			sound-dai = <&hdmi_tx>;
+		};
+	};
+};
diff --git a/include/dt-bindings/sound/meson-g12a-tohdmitx.h b/include/dt-bindings/sound/meson-g12a-tohdmitx.h
new file mode 100644
index 000000000000..c5e1f48d30d0
--- /dev/null
+++ b/include/dt-bindings/sound/meson-g12a-tohdmitx.h
@@ -0,0 +1,13 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __DT_MESON_G12A_TOHDMITX_H
+#define __DT_MESON_G12A_TOHDMITX_H
+
+#define TOHDMITX_I2S_IN_A	0
+#define TOHDMITX_I2S_IN_B	1
+#define TOHDMITX_I2S_IN_C	2
+#define TOHDMITX_I2S_OUT	3
+#define TOHDMITX_SPDIF_IN_A	4
+#define TOHDMITX_SPDIF_IN_B	5
+#define TOHDMITX_SPDIF_OUT	6
+
+#endif /* __DT_MESON_G12A_TOHDMITX_H */