On Thu, Oct 8, 2015 at 8:31 AM, Sjoerd Simons sjoerd.simons@collabora.co.uk wrote:
Add devicetree bindings for the spdif tranceiver found on found on rk3066, rk3188 and rk3288 SoCs
Signed-off-by: Sjoerd Simons sjoerd.simons@collabora.co.uk
Changes in v4:
- Require rockchip,grf on RK3288 as the 8 channel solution has to be selected on that SoC
- Make the compatibility string one of a known list rather then requiring a precise list of options.
- Change the clock names to hclk and mclk instead of spdif_hclk and spdif_mclk to better match the implementation and data sheets.
Changes in v3: None Changes in v2: None
.../devicetree/bindings/sound/rockchip-spdif.txt | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/rockchip-spdif.txt
diff --git a/Documentation/devicetree/bindings/sound/rockchip-spdif.txt b/Documentation/devicetree/bindings/sound/rockchip-spdif.txt new file mode 100644 index 0000000..33dd82c --- /dev/null +++ b/Documentation/devicetree/bindings/sound/rockchip-spdif.txt @@ -0,0 +1,44 @@ +* Rockchip SPDIF transceiver
+The S/PDIF audio block is a stereo transceiver that allows the +processor to receive and transmit digital audio via an coaxial cable or +a fibre cable.
+Required properties:
+- compatible: should be one of the following:
- "rockchip,rk3288-spdif", "rockchip,rk3188-spdif" or
"rockchip,rk3066-spdif"+- reg: physical base address of the controller and length of memory mapped
- region.
+- interrupts: should contain the SPDIF interrupt.
+- #address-cells: should be 1. +- #size-cells: should be 0.
Why do you need these? Are you going to have sub nodes?
+- dmas: DMA specifiers for tx dma. See the DMA client binding,
- Documentation/devicetree/bindings/dma/dma.txt
+- dma-names: should be "tx" +- clocks: a list of phandle + clock-specifier pairs, one for each entry
- in clock-names.
+- clock-names: should contain following:
- "hclk": clock for SPDIF controller
- "mclk" : clock for SPDIF bus
+Required properties on RK3288:
- rockchip,grf: the phandle of the syscon node for the general register
file (GRF)+Example for the rk3188 SPDIF controller:
+spdif: spdif@0x1011e000 {
compatible = "rockchip,rk3188-spdif", "rockchip,rk3066-spdif";reg = <0x1011e000 0x2000>;interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;#address-cells = <1>;#size-cells = <0>;dmas = <&dmac1_s 8>;dma-names = "tx";clock-names = "hclk", "mclk";clocks = <&cru HCLK_SPDIF>, <&cru SCLK_SPDIF>;status = "disabled";#sound-dai-cells = <0>;+};
2.6.1