Add a new compatible for sun4i-i2s driver to handle some
SoCs that have a reset line that must be asserted/deasserted.
This new compatible, "allwinner,sun6i-a31-i2s", requires two
properties:
- resets: phandle to the reset line
- reset-names: the name of the reset line ("rst").
Except these differences, the compatible is identical to previous one
which will not handle a reset line.
Signed-off-by: Mylène Josserand <[email protected]>
---
.../devicetree/bindings/sound/sun4i-i2s.txt | 23 ++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/sun4i-i2s.txt
b/Documentation/devicetree/bindings/sound/sun4i-i2s.txt
index 7a2c0945fd22..f673206e309b 100644
--- a/Documentation/devicetree/bindings/sound/sun4i-i2s.txt
+++ b/Documentation/devicetree/bindings/sound/sun4i-i2s.txt
@@ -7,6 +7,7 @@ Required properties:
- compatible: should be one of the following:
- "allwinner,sun4i-a10-i2s"
+ - "allwinner,sun6i-a31-i2s" for controller with reset lines
- reg: physical base address of the controller and length of memory mapped
region.
- interrupts: should contain the I2S interrupt.
@@ -19,7 +20,13 @@ Required properties:
- "mod" : module clock for the I2S controller
- #sound-dai-cells : Must be equal to 0
+Required properties for the following compatibles:
+ - "allwinner,sun6i-a31-i2s"
+- resets: phandle to the reset line for this codec
+- reset-names: Contains the reset signal name "rst"
+
Example:
+For "allwinner,sun4i-a10-i2s":
i2s0: i2s@01c22400 {
#sound-dai-cells = <0>;
@@ -32,3 +39,19 @@ i2s0: i2s@01c22400 {
<&dma SUN4I_DMA_NORMAL 3>;
dma-names = "rx", "tx";
};
+
+For "allwinner,sun6i-a31-i2s":
+
+dai: dai@01c22c00 {
+ #sound-dai-cells = <0>;
+ compatible = "allwinner,sun6i-a31-i2s";
+ reg = <0x01c22c00 0x200>;
+ interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&ccu CLK_BUS_CODEC>, <&ccu CLK_AC_DIG>;
+ clock-names = "apb", "mod";
+ resets = <&ccu RST_BUS_CODEC>;
+ reset-names = "rst";
+ dmas = <&dma 15>, /* AUDIO_CODEC port */
+ <&dma 15>; /* AUDIO_CODEC port */
+ dma-names = "rx", "tx";
+};
--
2.11.0
