Adds DT bindings documentation for the hi6210-i2s driver.
Cc: Zhangfei Gao <zhangfei....@linaro.org>
Cc: Liam Girdwood <lgirdw...@gmail.com>
Cc: Mark Brown <broo...@kernel.org>
Cc: Jaroslav Kysela <pe...@perex.cz>
Cc: Takashi Iwai <ti...@suse.com>
Cc: Wei Xu <xuw...@hisilicon.com>
Cc: Rob Herring <robh...@kernel.org>
Cc: Andy Green <a...@warmcat.com>
Cc: Dave Long <dave.l...@linaro.org>
Cc: Guodong Xu <guodong...@linaro.org>
Signed-off-by: John Stultz <john.stu...@linaro.org>
---
v3:
* Simplified and reworked dt binding
---
.../bindings/sound/hisilicon,hi6210-i2s.txt | 32 ++++++++++++++++++++++
1 file changed, 32 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..4be451c
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/hisilicon,hi6210-i2s.txt
@@ -0,0 +1,32 @@
+* Hisilicon 6210 i2s controller
+
+Required properties:
+
+- compatible: should be one of the following:
+ - "hisilicon,hi6210-i2s"
+- reg: physical base address of the i2s controller unit and length of
+ memory mapped region.
+- 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"
+- hisilicon,sysctrl-syscon: phandle to sysctrl syscon
+
+Example for the hi6210 i2s controller:
+
+i2s0: hi6210_i2s {
+ compatible = "hisilicon,hi6210-i2s";
+ reg = <0x0 0xf7118000 0x0 0x8000>; /* i2s unit */
+ interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>; /* 155
"DigACodec_intr"-32 */
+ 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";
+ hisilicon,sysctrl-syscon = <&sys_ctrl>;
+};
--
2.7.4
