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ASoC: meson: add tohdmitx DT bindings 

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>
Tested-by: Neil Armstrong <narmstrong@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jerome Brunet 2019-05-15 15:18:56 +02:00 committed by Mark Brown
parent a188339ca5
commit abdcfc2564
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55
Documentation/devicetree/bindings/sound/amlogic,g12a-tohdmitx.txt Normal file
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* 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>;
};
};
};

13
include/dt-bindings/sound/meson-g12a-tohdmitx.h Normal file
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/* 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 */