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 mylene.josserand@free-electrons.com --- .../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"; +};