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| author | Shengjiu Wang <shengjiu.wang@nxp.com> | 2018-07-25 13:42:50 +0800 |
|---|---|---|
| committer | Leonard Crestez <leonard.crestez@nxp.com> | 2018-08-24 12:41:33 +0300 |
| commit | 70388e3d654d66538012f9b7261f4d890c682cdd (patch) | |
| tree | 7b08611b4f4be37de8456c08bca50ba849e4ee20 /Documentation | |
| parent | 2c728eaa8d9e3203d5731235e4b94f2c825d9cbb (diff) | |
MLK-19042-1: ASoC: fsl_rpmsg_i2s: support low power audio
Add two new message command I2S_TX_POINTER and I2S_RX_POINTER,
which are used to get the hw pointer in m4 side. For in low
power audio mode, m4 won't send notification every period, the
notification only be sent when hw pointer reach end of buffer,
so we need these command to get the position of hw pointer,
user can use it to calculate the timestamp.
Restructure send message and recv message together for i2s_rpmsg,
that every send message has a recv message. so the
i2s_send_message can store the recv message indepedently. one
reason is that the receive message is async withe send message.
The low power audio is disabled in default, user need to enabled
it by add "fsl,enable-lpa" in dts.
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Viorel Suman <viorel.suman@nxp.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/sound/fsl,rpmsg-i2s.txt | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/fsl,rpmsg-i2s.txt b/Documentation/devicetree/bindings/sound/fsl,rpmsg-i2s.txt index f38cf9d90500..fd62b0d444a8 100644 --- a/Documentation/devicetree/bindings/sound/fsl,rpmsg-i2s.txt +++ b/Documentation/devicetree/bindings/sound/fsl,rpmsg-i2s.txt @@ -7,6 +7,7 @@ serial interfaces with frame synchronization such as I2S. Required properties: - compatible : Compatible list, contains "fsl,imx7ulp-rpmsg-i2s". + "fsl,imx8mq-rpmsg-i2s" - fsl,audioindex : This is an index indicating the audio device index in the M4 side. |