[RFC][PATCH 06/10 v2] ASoC: add hi6210-i2s DT bindings

[John Stultz <john.stultz@linaro.org>]

Adds DT bindings documentation for the hi6210-i2s driver.

Signed-off-by: John Stultz <john.stultz@linaro.org>
---
 .../bindings/sound/hisilicon,hi6210-i2s.txt        | 36 ++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/hisilicon,hi6210-i2s.txt

diff --git a/Documentation/devicetree/bindings/sound/hisilicon,hi6210-i2s.txt b/Documentation/devicetree/bindings/sound/hisilicon,hi6210-i2s.txt
new file mode 100644
index 0000000..95157ba
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/hisilicon,hi6210-i2s.txt
@@ -0,0 +1,36 @@
+* Hisilicon 6210 i2s controller
+
+Required properties:
+
+- compatible: should be one of the following:
+   - "hisilicon,hi6210-i2s"
+- reg: physical base address of the controller and length of memory mapped
+  region. Should contain the i2s unit, syscon and pmctrl registers, in that
+  order.
+- interrupts: should contain the i2s interrupt.
+ clocks: a list of phandle + clock-specifier pairs, one for each entry
+  in clock-names.
+- clock-names: should contain following:
+   - "dacodec"
+   - "i2s-base"
+- dmas: DMA specifiers for tx dma. See the DMA client binding,
+  Documentation/devicetree/bindings/dma/dma.txt
+- dma-names: should be "tx" and "rx"
+
+
+Example for the hi6210 i2s controller:
+
+i2s0: hi6210_i2s {
+	compatible = "hisilicon,hi6210-i2s";
+	reg = <0x0 0xf7118000 0x0 0x8000>, /* i2s unit */
+	      <0x0 0xf7030000 0x0 0x400>,  /* syscon */
+	      <0x0 0xf7032000 0x0 0x400>;  /* pmctrl */
+	interrupts = <0 123 0x4>; /* 155 "DigACodec_intr"-32 */
+	pinctrl-names = "default";
+	pinctrl-0 = <&bt_pmx_func &bt_cfg_func>;
+	clocks = <&sys_ctrl HI6220_DACODEC_PCLK>,
+		 <&sys_ctrl HI6220_BBPPLL0_DIV>;
+	clock-names = "dacodec", "i2s-base";
+	dmas = <&dma0 15 &dma0 14>;
+	dma-names = "rx", "tx";
+};
-- 
1.9.1