Add a string property to assign the rpmsg channel this sound card sits on. 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@nxp.com --- .../devicetree/bindings/sound/fsl,rpmsg.yaml | 36 +++++++++++++++++-- 1 file changed, 34 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml b/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml index d370c98a62c7..e847611a85f7 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 +88,16 @@ 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. + This property 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 +120,22 @@ 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"; + }; + +...