1Cirrus Logic CS4271 DT bindings
2
3This driver supports both the I2C and the SPI bus.
4
5Required properties:
6
7 - compatible: "cirrus,cs4271"
8
9For required properties on SPI, please consult
10Documentation/devicetree/bindings/spi/spi-bus.txt
11
12Required properties on I2C:
13
14 - reg: the i2c address
15
16
17Optional properties:
18
19 - reset-gpio: 	a GPIO spec to define which pin is connected to the chip's
20		!RESET pin
21 - cirrus,amuteb-eq-bmutec:	When given, the Codec's AMUTEB=BMUTEC flag
22				is enabled.
23 - cirrus,enable-soft-reset:
24	The CS4271 requires its LRCLK and MCLK to be stable before its RESET
25	line is de-asserted. That also means that clocks cannot be changed
26	without putting the chip back into hardware reset, which also requires
27	a complete re-initialization of all registers.
28
29	One (undocumented) workaround is to assert and de-assert the PDN bit
30	in the MODE2 register. This workaround can be enabled with this DT
31	property.
32
33	Note that this is not needed in case the clocks are stable
34	throughout the entire runtime of the codec.
35
36Examples:
37
38	codec_i2c: cs4271@10 {
39		compatible = "cirrus,cs4271";
40		reg = <0x10>;
41		reset-gpio = <&gpio 23 0>;
42	};
43
44	codec_spi: cs4271@0 {
45		compatible = "cirrus,cs4271";
46		reg = <0x0>;
47		reset-gpio = <&gpio 23 0>;
48		spi-max-frequency = <6000000>;
49	};
50
51