On Sun, Feb 07, 2021 at 06:23:51PM +0800, Shengjiu Wang wrote: > fsl_rpmsg cpu dai driver is driver for rpmsg audio, which is mainly used > for getting the user's configuration from device tree and configure the > clocks which is used by Cortex-M core. So in this document define the > needed property. > > Signed-off-by: Shengjiu Wang <shengjiu.wang@xxxxxxx> > --- > .../devicetree/bindings/sound/fsl,rpmsg.yaml | 80 +++++++++++++++++++ > 1 file changed, 80 insertions(+) > create mode 100644 Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml > > diff --git a/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml b/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml > new file mode 100644 > index 000000000000..2d3ce10d42fc > --- /dev/null > +++ b/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml > @@ -0,0 +1,80 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/sound/fsl,rpmsg.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: NXP Audio RPMSG CPU DAI Controller > + > +maintainers: > + - Shengjiu Wang <shengjiu.wang@xxxxxxx> > + > +properties: > + compatible: > + enum: > + - fsl,imx7ulp-rpmsg > + - fsl,imx8mn-rpmsg > + - fsl,imx8mm-rpmsg > + - fsl,imx8mp-rpmsg rpmsg is a protocol. What's the h/w block? > + > + clocks: > + items: > + - description: Peripheral clock for register access > + - description: Master clock > + - description: DMA clock for DMA register access > + - description: Parent clock for multiple of 8kHz sample rates > + - description: Parent clock for multiple of 11kHz sample rates > + minItems: 5 > + > + clock-names: > + items: > + - const: ipg > + - const: mclk > + - const: dma > + - const: pll8k > + - const: pll11k > + minItems: 5 > + > + power-domains: > + maxItems: 1 > + > + fsl,audioindex: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: instance index for rpmsg image > + > + fsl,version: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: rpmsg image version index What are these 2 used for? > + > + fsl,buffer-size: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: pre allocate dma buffer size > + > + fsl,enable-lpa: > + $ref: /schemas/types.yaml#/definitions/flag > + description: enable low power audio path. > + > + fsl,codec-type: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: Sometimes the codec is registered by > + driver not the device tree, this items > + can be used to distinguish codecs 0-2^32 are valid values? > + > +required: > + - compatible > + - fsl,audioindex > + - fsl,version > + - fsl,buffer-size > + > +additionalProperties: false > + > +examples: > + - | > + rpmsg_audio: rpmsg_audio { > + compatible = "fsl,imx8mn-rpmsg"; > + fsl,audioindex = <0> ; > + fsl,version = <2>; > + fsl,buffer-size = <0x6000000>; > + fsl,enable-lpa; > + status = "okay"; Don't show status in examples. > + }; > -- > 2.27.0 >
