linux-zen-desktop/Documentation/devicetree/bindings/sound/rt5668.txt

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RT5668B audio CODEC
This device supports I2C only.
Required properties:
- compatible : "realtek,rt5668b"
- reg : The I2C address of the device.
Optional properties:
- interrupts : The CODEC's interrupt output.
- realtek,dmic1-data-pin
0: dmic1 is not used
1: using GPIO2 pin as dmic1 data pin
2: using GPIO5 pin as dmic1 data pin
- realtek,dmic1-clk-pin
0: using GPIO1 pin as dmic1 clock pin
1: using GPIO3 pin as dmic1 clock pin
- realtek,jd-src
0: No JD is used
1: using JD1 as JD source
- realtek,ldo1-en-gpios : The GPIO that controls the CODEC's LDO1_EN pin.
Pins on the device (for linking into audio routes) for RT5668B:
* DMIC L1
* DMIC R1
* IN1P
* HPOL
* HPOR
Example:
rt5668 {
compatible = "realtek,rt5668b";
reg = <0x1a>;
interrupt-parent = <&gpio>;
interrupts = <TEGRA_GPIO(U, 6) IRQ_TYPE_LEVEL_HIGH>;
realtek,ldo1-en-gpios =
<&gpio TEGRA_GPIO(R, 2) GPIO_ACTIVE_HIGH>;
realtek,dmic1-data-pin = <1>;
realtek,dmic1-clk-pin = <1>;
realtek,jd-src = <1>;
};