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bindings: sound: Add swr-haptics binding document

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The haptics module inside PM8350B has a soundware slave which
connects to the audio subsystem. It can receive PCM data from
the audio subsystem and use it to play a vibration. Add a binding
document for it.

Change-Id: I3012ceca7042568957cec12864bef6c2e7a03a29
This commit is contained in:
Fenglin Wu 2020-01-22 11:40:51 +08:00
commit b265239536
1 changed files with 18 additions and 0 deletions
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18
bindings/sound/wcd_codec.txt
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@ -439,6 +439,24 @@ wsa883x_0221: wsa883x@02170221 {
qcom,cdc-static-supplies = "cdc-vdd-1p8";
};
Haptics Soundwire slave device as child of Soundwire master in Bolero codec
Required properties:
- compatible: "qcom,swr-haptics", or "qcom,pm8350b-swr-haptics".
- reg: Specifies the haptics soundwire slave unique device address.
- swr-slave-supply: Specify the phandle of the regulator device to take
haptics soundwire slave out of reset.
- qcom,rx_swr_ch_map: Specify the mapping of soundwire rx slave port configuration.
format: <port_id, ch_mask, ch_rate, num_ch, port_type>.
Example:
swr_haptics: swr_haptics@f0170220 {
compatible = "qcom,pm8350b-swr-haptics";
reg = <0x01 0xf0170220>;
swr-slave-supply = <&hap_swr_slave_reg>;
qcom,rx_swr_ch_map = <0 0x1 0xF 0 PCM_OUT1>;
};
SWR MIC Soundwire slave device as child of Soundwire master in digital codec
Required properties: