On Wed, Sep 14, 2022 at 06:51:39PM +0800, Chancel Liu wrote:
> Add a string property to assign the rpmsg channel this sound card sits
> on. It also represents the name of ASoC platform driver. This property
> can be omitted if there is only one sound card and it sits on
> "rpmsg-audio-channel".
>
> Signed-off-by: Chancel Liu <chancel.liu@xxxxxxx>
> ---
> .../devicetree/bindings/sound/fsl,rpmsg.yaml | 37 ++++++++++++++++++-
> 1 file changed, 35 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml b/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml
> index d370c98a62c7..3744ae794c00 100644
> --- a/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml
> +++ b/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml
> @@ -11,8 +11,11 @@ maintainers:
>
> description: |
> fsl_rpmsg is a virtual audio device. Mapping to real hardware devices
> - are SAI, DMA controlled by Cortex M core. What we see from Linux
> - side is a device which provides audio service by rpmsg channel.
> + are SAI, MICFIL, DMA controlled by Cortex M core. What we see from
> + Linux side is a device which provides audio service by rpmsg channel.
> + We can create different sound cards which access different hardwares
> + such as SAI, MICFIL, .etc through building rpmsg channels between
> + Cortex-A and Cortex-M.
>
> properties:
> compatible:
> @@ -85,6 +88,17 @@ properties:
> This is a boolean property. If present, the receiving function
> will be enabled.
>
> + fsl,rpmsg-channel-name:
> + $ref: /schemas/types.yaml#/definitions/string
> + description: |
> + A string property to assign rpmsg channel this sound card sits on.
> + It also represents the name of ASoC platform driver. This property
That's a Linux detail which doesn't belong in DT.
> + can be omitted if there is only one sound card and it sits on
> + "rpmsg-audio-channel".
> + enum:
> + - rpmsg-audio-channel
> + - rpmsg-micfil-channel
> +
> required:
> - compatible
> - model
> @@ -107,3 +121,22 @@ examples:
> <&clk IMX8MN_AUDIO_PLL2_OUT>;
> clock-names = "ipg", "mclk", "dma", "pll8k", "pll11k";
> };
> +
> + - |
> + #include <dt-bindings/clock/imx8mm-clock.h>
> +
> + rpmsg_micfil: audio-controller {
> + compatible = "fsl,imx8mm-rpmsg-audio";
> + model = "micfil-audio";
> + fsl,rpmsg-channel-name = "rpmsg-micfil-channel";
> + fsl,enable-lpa;
> + fsl,rpmsg-in;
> + clocks = <&clk IMX8MM_CLK_PDM_IPG>,
> + <&clk IMX8MM_CLK_PDM_ROOT>,
> + <&clk IMX8MM_CLK_SDMA3_ROOT>,
> + <&clk IMX8MM_AUDIO_PLL1_OUT>,
> + <&clk IMX8MM_AUDIO_PLL2_OUT>;
> + clock-names = "ipg", "mclk", "dma", "pll8k", "pll11k";
> + };
> +
> +...
> --
> 2.25.1
>
>
