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Documentation / devicetree / bindings / sound / ti,tas5086.txt




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Based on kernel version 3.13. Page generated on 2014-01-20 22:01 EST.

1	Texas Instruments TAS5086 6-channel PWM Processor
2	
3	Required properties:
4	
5	 - compatible:		Should contain "ti,tas5086".
6	 - reg:			The i2c address. Should contain <0x1b>.
7	
8	Optional properties:
9	
10	 - reset-gpio: 		A GPIO spec to define which pin is connected to the
11				chip's !RESET pin. If specified, the driver will
12				assert a hardware reset at probe time.
13	
14	 - ti,charge-period:	This property should contain the time in microseconds
15				that closely matches the external single-ended
16				split-capacitor charge period. The hardware chip
17				waits for this period of time before starting the
18				PWM signals. This helps reduce pops and clicks.
19	
20				When not specified, the hardware default of 1300ms
21				is retained.
22	
23	 - ti,mid-z-channel-X:	Boolean properties, X being a number from 1 to 6.
24				If given, channel X will start with the Mid-Z start
25				sequence, otherwise the default Low-Z scheme is used.
26	
27				The correct configuration depends on how the power
28				stages connected to the PWM output pins work. Not all
29				power stages are compatible to Mid-Z - please refer
30				to the datasheets for more details.
31	
32				Most systems should not set any of these properties.
33	
34	Examples:
35	
36		i2c_bus {
37			tas5086@1b {
38				compatible = "ti,tas5086";
39				reg = <0x1b>;
40				reset-gpio = <&gpio 23 0>;
41				ti,charge-period = <156000>;
42			};
43		};
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