DT binding documentation for this new ASoC driver.
Signed-off-by: Songjun Wu <songjun.wu@xxxxxxxxx>
---
.../devicetree/bindings/sound/atmel-classd.txt | 73 ++++++++++++++++++++
1 file changed, 73 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/atmel-classd.txt
diff --git a/Documentation/devicetree/bindings/sound/atmel-classd.txt b/Documentation/devicetree/bindings/sound/atmel-classd.txt
new file mode 100644
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+* Atmel ClassD driver under ALSA SoC architecture
+
+* Atmel ClassD driver
+Required properties:
+- compatible
+ Should be "atmel,sama5d2-classd".
+- reg
+ Should contain ClassD registers location and length.
+- interrupts
+ Should contain the IRQ line for the ClassD.
+- dmas
+ One DMA specifiers as described in atmel-dma.txt and dma.txt files.
+- dma-names
+ Must be "tx".
+- clock-names
+ tuple listing input clock names.
+ Required elements: "pclk", "gclk" and "aclk".
+- clocks
+ phandles to input clocks.
+
+Optional properties:
+- pinctrl-names, pinctrl-0
+ Please refer to pinctrl-bindings.txt.
+- atmel,pwm-type
+ PWM modulation type, "single" or "diff".
+- atmel,non-overlap-time
+ Set non-overlapping time, the unit is nanosecond(ns).
+ There are four values,
+ <5>, <10>, <15>, <20>, the default value is <10>.
+ Non-overlapping will be disabled if not specified.
+
+Example:
+classd: classd@fc048000 {
+ compatible = "atmel,sama5d2-classd";
+ reg = <0xfc048000 0x100>;
+ interrupts = <59 IRQ_TYPE_LEVEL_HIGH 7>;
+ dmas = <&dma0
+ (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
+ | AT91_XDMAC_DT_PERID(47))>;
+ dma-names = "tx";
+ clocks = <&classd_clk>, <&classd_gclk>, <&audio_pll_pmc>;
+ clock-names = "pclk", "gclk", "aclk";
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_classd_default>;
+ atmel,pwm-type = "diff";
+ atmel,non-overlap-time = <10>;
+};
+
+
+* Atmel ASoC driver with ClassD
+Required properties:
+- compatible
+ Should be "atmel,asoc-classd".
+- atmel,model
+ The user-visible name of this sound complex.
+- atmel,audio-platform
+ Should be <&classd>.
+- atmel,audio-cpu-dai-name
+ The name of the CPU DAI in ALSA SoC architecture.
+ The format is <classd registers location>.classd.
+- atmel,audio-codec
+ Should be <&classd>.
+
+Example:
+sound {
+ compatible = "atmel,asoc-classd";
+
+ atmel,model = "classd @ SAMA5D2-Xplained";
+ atmel,audio-platform = <&classd>;
+ atmel,audio-cpu-dai-name = "fc048000.classd";
+ atmel,audio-codec = <&classd>;
+};
--
1.7.9.5
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