On Fri, Jun 16, 2017 at 03:57:31PM +0200, olivier moysan wrote:
> This adds documentation of device tree bindings for the
> STM32 SPDIFRX interface.
>
> Signed-off-by: olivier moysan <olivier.moysan@xxxxxx>
> ---
> .../devicetree/bindings/sound/st,stm32-spdifrx.txt | 56 ++++++++++++++++++++++
> 1 file changed, 56 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/sound/st,stm32-spdifrx.txt
>
> diff --git a/Documentation/devicetree/bindings/sound/st,stm32-spdifrx.txt b/Documentation/devicetree/bindings/sound/st,stm32-spdifrx.txt
> new file mode 100644
> index 0000000..33826f2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/st,stm32-spdifrx.txt
> @@ -0,0 +1,56 @@
> +STMicroelectronics STM32 S/PDIF receiver (SPDIFRX).
> +
> +The SPDIFRX peripheral, is designed to receive an S/PDIF flow compliant with
> +IEC-60958 and IEC-61937.
> +
> +Required properties:
> + - compatible: should be "st,stm32h7-spdifrx"
> + - reg: cpu DAI IP base address and size
> + - clocks: must contain an entry for kclk (used as S/PDIF signal reference)
> + - clock-names: must contain "kclk"
> + - interrupts: cpu DAI interrupt line
> + - dmas: DMA specifiers for audio data DMA and iec control flow DMA
> + See STM32 DMA bindings, Documentation/devicetree/bindings/dma/stm32-dma.txt
> + - dma-names: two dmas have to be defined, "rx" and "rx-ctrl"
> +
> +Optional properties:
> + - resets: Reference to a reset controller asserting the SPDIFRX
> +
> +The device node should contain one 'port' child node with one child 'endpoint'
> +node, according to the bindings defined in Documentation/devicetree/bindings/
> +graph.txt.
> +
> +Example:
> +spdifrx: spdifrx@40004000 {
> + compatible = "st,stm32h7-spdifrx";
> + reg = <0x40004000 0x400>;
> + clocks = <&rcc SPDIFRX_CK>;
> + clock-names = "kclk";
> + interrupts = <97>;
> + dmas = <&dmamux1 2 93 0x400 0x0>,
> + <&dmamux1 3 94 0x400 0x0>;
> + dma-names = "rx", "rx-ctrl";
> + pinctrl-0 = <&spdifrx_pins>;
> + pinctrl-names = "default";
> +
> + spdifrx_port: port {
> + cpu_endpoint: endpoint {
> + remote-endpoint = <&codec_endpoint>;
> + };
> + };
> +};
> +
> +spdif_in: spdif-in {
> + compatible = "linux,spdif-dir";
What is this? It should go.
Rob
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