diff options
| author | Shengjiu Wang <shengjiu.wang@freescale.com> | 2017-02-15 11:28:36 +0800 |
|---|---|---|
| committer | Anson Huang <Anson.Huang@nxp.com> | 2017-06-08 20:59:57 +0800 |
| commit | bca66a471cb66053d6834058077c5448c93e8d76 (patch) | |
| tree | 65df4dcfa0098ee1469330f433f80a3670d3445e /Documentation | |
| parent | d432bbe737e5fb35972764231d7817131629c601 (diff) | |
MLK-13904-1: ASoC: fsl: add audio cpu dai driver base on rpmsg
Add the cpu dai driver, as the rpmsg_send api can't be used in
atomic context, so using the workqueue instead of calling
rpmsg_send() directly.
The detail communication stack is defined in header file.
Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com>
Acked-by: Robin Gong <yibin.gong@nxp.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/sound/fsl,rpmsg-i2s.txt | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/fsl,rpmsg-i2s.txt b/Documentation/devicetree/bindings/sound/fsl,rpmsg-i2s.txt new file mode 100644 index 000000000000..f38cf9d90500 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/fsl,rpmsg-i2s.txt @@ -0,0 +1,20 @@ +Freescale rpmsg i2s interface. + +The rpmsg i2s is based on RPMSG that used communicating with M4 core, +which provides a synchronous audio interface that supports fullduplex +serial interfaces with frame synchronization such as I2S. + +Required properties: + + - compatible : Compatible list, contains "fsl,imx7ulp-rpmsg-i2s". + + - fsl,audioindex : This is an index indicating the audio device index in + the M4 side. + +Example: +rpmsg_i2s: rpmsg-i2s { + compatible = "fsl,imx7ulp-rpmsg-i2s"; + /* the audio device index in m4 domain */ + fsl,audioindex = <0> ; + status = "okay"; +}; |