This patch adds dt-binding documentation for zte's tdm controller.
Signed-off-by: Baoyou Xie baoyou.xie@linaro.org --- .../devicetree/bindings/sound/zte,tdm.txt | 32 ++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/zte,tdm.txt
diff --git a/Documentation/devicetree/bindings/sound/zte,tdm.txt b/Documentation/devicetree/bindings/sound/zte,tdm.txt new file mode 100644 index 0000000..f6e4f7f --- /dev/null +++ b/Documentation/devicetree/bindings/sound/zte,tdm.txt @@ -0,0 +1,32 @@ +ZTE TDM DAI driver + +Required properties: + +- compatible : should be one of the following. + * zte,zx-tdm +- reg : physical base address of the controller and length of memory mapped + region. +- clocks : Pairs of phandle and specifier referencing the controller's clocks. +- clock-names: "tdm_wclk" for the wclk. + "tdm_pclk" for the pclk. +-#clock-cells: should be 1. +- zte,tdm-dma-sysctrl : Reference to the sysctrl controller controlling + the dma. includes: + phandle of sysctrl. + register offset in sysctrl for control dma. + mask of the register that be written to dma. + value of the register that be written to dma. + +Example: + + tdm: tdm@1487000 { + compatible = "zte,zx-tdm"; + reg = <0x01487000 0x1000>; + clocks = <&audiocrm AUDIO_TDM_WCLK>, <&audiocrm AUDIO_TDM_PCLK>; + clock-names = "tdm_wclk", "tdm_pclk"; + #clock-cells = <1>; + pinctrl-names = "default"; + pinctrl-0 = <&tdm_global_pin>; + zte,tdm-dma-sysctrl = <&sysctrl 0x10c 0xf 0xf>; + status = "ok"; + };