diff options
author | Mark Brown <broonie@linaro.org> | 2014-05-21 19:23:41 -0400 |
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committer | Mark Brown <broonie@linaro.org> | 2014-05-21 19:23:41 -0400 |
commit | 0f4019e6f4da4e0bcefd38f78d61fe5d0565b3cc (patch) | |
tree | 3c54c788587d7988d03dca33d4d5e1da09c8f42d /Documentation | |
parent | 228704bbdd5ed452f5db49eecbea9180693d1974 (diff) | |
parent | 4da533932dedff930596bc536adaba1e508f9ffa (diff) |
Merge remote-tracking branch 'asoc/topic/component' into asoc-next
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/sound/st,sta350.txt | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/st,sta350.txt b/Documentation/devicetree/bindings/sound/st,sta350.txt new file mode 100644 index 000000000000..950188891abd --- /dev/null +++ b/Documentation/devicetree/bindings/sound/st,sta350.txt | |||
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1 | STA350 audio CODEC | ||
2 | |||
3 | The driver for this device only supports I2C. | ||
4 | |||
5 | Required properties: | ||
6 | |||
7 | - compatible: "st,sta350" | ||
8 | - reg: the I2C address of the device for I2C | ||
9 | - reset-gpios: a GPIO spec for the reset pin. If specified, it will be | ||
10 | deasserted before communication to the codec starts. | ||
11 | |||
12 | - power-down-gpios: a GPIO spec for the power down pin. If specified, | ||
13 | it will be deasserted before communication to the codec | ||
14 | starts. | ||
15 | |||
16 | - vdd-dig-supply: regulator spec, providing 3.3V | ||
17 | - vdd-pll-supply: regulator spec, providing 3.3V | ||
18 | - vcc-supply: regulator spec, providing 5V - 26V | ||
19 | |||
20 | Optional properties: | ||
21 | |||
22 | - st,output-conf: number, Selects the output configuration: | ||
23 | 0: 2-channel (full-bridge) power, 2-channel data-out | ||
24 | 1: 2 (half-bridge). 1 (full-bridge) on-board power | ||
25 | 2: 2 Channel (Full-Bridge) Power, 1 Channel FFX | ||
26 | 3: 1 Channel Mono-Parallel | ||
27 | If parameter is missing, mode 0 will be enabled. | ||
28 | |||
29 | - st,ch1-output-mapping: Channel 1 output mapping | ||
30 | - st,ch2-output-mapping: Channel 2 output mapping | ||
31 | - st,ch3-output-mapping: Channel 3 output mapping | ||
32 | 0: Channel 1 | ||
33 | 1: Channel 2 | ||
34 | 2: Channel 3 | ||
35 | If parameter is missing, channel 1 is choosen. | ||
36 | |||
37 | - st,thermal-warning-recover: | ||
38 | If present, thermal warning recovery is enabled. | ||
39 | |||
40 | - st,thermal-warning-adjustment: | ||
41 | If present, thermal warning adjustment is enabled. | ||
42 | |||
43 | - st,fault-detect-recovery: | ||
44 | If present, then fault recovery will be enabled. | ||
45 | |||
46 | - st,ffx-power-output-mode: string | ||
47 | The FFX power output mode selects how the FFX output timing is | ||
48 | configured. Must be one of these values: | ||
49 | - "drop-compensation" | ||
50 | - "tapered-compensation" | ||
51 | - "full-power-mode" | ||
52 | - "variable-drop-compensation" (default) | ||
53 | |||
54 | - st,drop-compensation-ns: number | ||
55 | Only required for "st,ffx-power-output-mode" == | ||
56 | "variable-drop-compensation". | ||
57 | Specifies the drop compensation in nanoseconds. | ||
58 | The value must be in the range of 0..300, and only | ||
59 | multiples of 20 are allowed. Default is 140ns. | ||
60 | |||
61 | - st,overcurrent-warning-adjustment: | ||
62 | If present, overcurrent warning adjustment is enabled. | ||
63 | |||
64 | - st,max-power-use-mpcc: | ||
65 | If present, then MPCC bits are used for MPC coefficients, | ||
66 | otherwise standard MPC coefficients are used. | ||
67 | |||
68 | - st,max-power-corr: | ||
69 | If present, power bridge correction for THD reduction near maximum | ||
70 | power output is enabled. | ||
71 | |||
72 | - st,am-reduction-mode: | ||
73 | If present, FFX mode runs in AM reduction mode, otherwise normal | ||
74 | FFX mode is used. | ||
75 | |||
76 | - st,odd-pwm-speed-mode: | ||
77 | If present, PWM speed mode run on odd speed mode (341.3 kHz) on all | ||
78 | channels. If not present, normal PWM spped mode (384 kHz) will be used. | ||
79 | |||
80 | - st,distortion-compensation: | ||
81 | If present, distortion compensation variable uses DCC coefficient. | ||
82 | If not present, preset DC coefficient is used. | ||
83 | |||
84 | - st,invalid-input-detect-mute: | ||
85 | If not present, automatic invalid input detect mute is enabled. | ||
86 | |||
87 | |||
88 | |||
89 | Example: | ||
90 | |||
91 | codec: sta350@38 { | ||
92 | compatible = "st,sta350"; | ||
93 | reg = <0x1c>; | ||
94 | reset-gpios = <&gpio1 19 0>; | ||
95 | power-down-gpios = <&gpio1 16 0>; | ||
96 | st,output-conf = <0x3>; // set output to 2-channel | ||
97 | // (full-bridge) power, | ||
98 | // 2-channel data-out | ||
99 | st,ch1-output-mapping = <0>; // set channel 1 output ch 1 | ||
100 | st,ch2-output-mapping = <0>; // set channel 2 output ch 1 | ||
101 | st,ch3-output-mapping = <0>; // set channel 3 output ch 1 | ||
102 | st,max-power-correction; // enables power bridge | ||
103 | // correction for THD reduction | ||
104 | // near maximum power output | ||
105 | st,invalid-input-detect-mute; // mute if no valid digital | ||
106 | // audio signal is provided. | ||
107 | }; | ||