From: Youlin Wang <wangyoulin1@xxxxxxxxxxxxx>
Adds DT bindings documentation for
the hikey960-i2s driver and audio card device.
Signed-off-by: Youlin Wang <wangyoulin1@xxxxxxxxxxxxx>
Signed-off-by: Tanglei Han <hantanglei@xxxxxxxxxx>
Signed-off-by: Guangke Ji <jiguangke@xxxxxxxxxx>
Signed-off-by: Feng Chen <puck.chen@xxxxxxxxxxxxx>
Signed-off-by: Kaihua Zhong <zhongkaihua@xxxxxxxxxx>
Signed-off-by: Jun Chen <chenjun14@xxxxxxxxxx>
Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
Signed-off-by: Yiping Xu <xuyiping@xxxxxxxxxxxxx>
Signed-off-by: Pengcheng Li <lipengcheng8@xxxxxxxxxx>
---
.../bindings/sound/hisilicon,hi3660-i2s.txt | 49 ++++++++++++++++++++++
1 file changed, 49 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/hisilicon,hi3660-i2s.txt
diff --git a/Documentation/devicetree/bindings/sound/hisilicon,hi3660-i2s.txt b/Documentation/devicetree/bindings/sound/hisilicon,hi3660-i2s.txt
new file mode 100644
index 0000000..654c234
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/hisilicon,hi3660-i2s.txt
@@ -0,0 +1,49 @@
+* Hisilicon 6210 i2s controller
+
+Required properties:
+
+- compatible: should be one of the following:
+ - "hisilicon,hi3660-i2s-1.0"
+- 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
+- #sound-dai-cells: Should be set to 1 (for multi-dai)
+
+Example for the hi3660 i2s controller:
+
+ i2s2: hisi_i2s {
+ compatible = "hisilicon,hi3660-i2s-1.0";
+ reg = <0x0 0xe804f800 0x0 0x400>,
+ <0x0 0xe804e000 0x0 0x400>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2s2_pmx_func &i2s2_cfg_func>;
+ dmas = <&asp_dmac 18 &asp_dmac 19>;
+ dma-names = "rx", "tx";
+ #sound-dai-cells = <0>;
+ };
+
+ sound {
+ compatible = "simple-audio-card";
+ simple-audio-card,name = "hikey-hdmi";
+ simple-audio-card,format = "i2s";
+
+ simple-audio-card,bitclock-master = <&sound_master>;
+ simple-audio-card,frame-master = <&sound_master>;
+
+ sound_master: simple-audio-card,cpu {
+ sound-dai = <&i2s2>;
+ };
+
+ simple-audio-card,codec {
+ sound-dai = <&adv7533>;
+ };
+ };
--
2.8.0
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