diff options
author | Damien.Horsley <Damien.Horsley@imgtec.com> | 2015-11-04 14:40:49 +0000 |
---|---|---|
committer | Mark Brown <broonie@kernel.org> | 2015-11-16 10:06:58 +0000 |
commit | 2dcfa06e0ecfc4de783ada9d37d0e9cef4f1eeda (patch) | |
tree | ba00a27fd31f473a9d92b478236622d810488f5b /Documentation/devicetree/bindings/sound/img,i2s-out.txt | |
parent | 14b947d9ced4f723b5bfd3f6ec614aa28b5d4cfb (diff) |
ASoC: img: Add binding document for I2S output controller
Add binding document for Imagination Technologies I2S output
controller
Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/sound/img,i2s-out.txt')
-rw-r--r-- | Documentation/devicetree/bindings/sound/img,i2s-out.txt | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/img,i2s-out.txt b/Documentation/devicetree/bindings/sound/img,i2s-out.txt new file mode 100644 index 000000000000..0159415b3338 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/img,i2s-out.txt @@ -0,0 +1,51 @@ +Imagination Technologies I2S Output Controller + +Required Properties: + + - compatible : Compatible list, must contain "img,i2s-out" + + - #sound-dai-cells : Must be equal to 0 + + - reg : Offset and length of the register set for the device + + - clocks : Contains an entry for each entry in clock-names + + - clock-names : Must include the following entries: + "sys" The system clock + "ref" The reference clock + + - dmas: Contains an entry for each entry in dma-names. + + - dma-names: Must include the following entry: + "tx" Single DMA channel used by all active I2S channels + + - img,i2s-channels : Number of I2S channels instantiated in the I2S out block + + - resets: Contains a phandle to the I2S out reset signal + + - reset-names: Contains the reset signal name "rst" + +Optional Properties: + + - interrupts : Contains the I2S out interrupts. Depending on + the configuration, there may be no interrupts, one interrupt, + or an interrupt per I2S channel. For the case where there is + one interrupt per channel, the interrupts should be listed + in ascending channel order + +Example: + +i2s_out: i2s-out@18100A00 { + compatible = "img,i2s-out"; + reg = <0x18100A00 0x200>; + interrupts = <GIC_SHARED 13 IRQ_TYPE_LEVEL_HIGH>; + dmas = <&mdc 23 0xffffffff 0>; + dma-names = "tx"; + clocks = <&cr_periph SYS_CLK_I2S_OUT>, + <&clk_core CLK_I2S>; + clock-names = "sys", "ref"; + img,i2s-channels = <6>; + resets = <&pistachio_reset PISTACHIO_RESET_I2S_OUT>; + reset-names = "rst"; + #sound-dai-cells = <0>; +}; |