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ASoC: mediatek: add documents for btcvsd driver

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document for btcvsd driver

Signed-off-by: KaiChieh Chuang <kaichieh.chuang@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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KaiChieh Chuang 2019-01-30 14:47:11 +08:00 committed by Mark Brown
parent 909d74e39f
commit 425da20a98
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Documentation/devicetree/bindings/sound/mtk-btcvsd-snd.txt Normal file
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Mediatek ALSA BT SCO CVSD/MSBC Driver
Required properties:
- compatible = "mediatek,mtk-btcvsd-snd";
- reg: register location and size of PKV and SRAM_BANK2
- interrupts: should contain BTSCO interrupt
- mediatek,infracfg: the phandles of INFRASYS
- mediatek,offset: Array contains of register offset and mask
infra_misc_offset,
infra_conn_bt_cvsd_mask,
cvsd_mcu_read_offset,
cvsd_mcu_write_offset,
cvsd_packet_indicator_offset
Example:
mtk-btcvsd-snd@18000000 {
compatible = "mediatek,mtk-btcvsd-snd";
reg=<0 0x18000000 0 0x1000>,
<0 0x18080000 0 0x8000>;
interrupts = <GIC_SPI 286 IRQ_TYPE_LEVEL_LOW>;
mediatek,infracfg = <&infrasys>;
mediatek,offset = <0xf00 0x800 0xfd0 0xfd4 0xfd8>;
};