Merge branch 'asoc-5.3' into asoc-next

15 files changed, 444 insertions, 91 deletions

diff --git a/Documentation/devicetree/bindings/media/st,stm32-dcmi.txt b/Documentation/devicetree/bindings/media/st,stm32-dcmi.txt
index 249790a93017..3122ded82eb4 100644
--- a/Documentation/devicetree/bindings/media/st,stm32-dcmi.txt
+++ b/Documentation/devicetree/bindings/media/st,stm32-dcmi.txt
@@ -11,7 +11,7 @@ Required properties:
 - clock-names: must contain "mclk", which is the DCMI peripherial clock
 - pinctrl: the pincontrol settings to configure muxing properly
            for pins that connect to DCMI device.
-           See Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt.
+           See Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.yaml.
 - dmas: phandle to DMA controller node,
         see Documentation/devicetree/bindings/dma/stm32-dma.txt
 - dma-names: must contain "tx", which is the transmit channel from DCMI to DMA
diff --git a/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-i2s.yaml b/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-i2s.yaml
new file mode 100644
index 000000000000..eb3992138eec
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-i2s.yaml
@@ -0,0 +1,132 @@
+# SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/allwinner,sun4i-a10-i2s.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Allwinner A10 I2S Controller Device Tree Bindings
+
+maintainers:
+  - Chen-Yu Tsai <wens@csie.org>
+  - Maxime Ripard <maxime.ripard@bootlin.com>
+
+properties:
+  "#sound-dai-cells":
+    const: 0
+
+  compatible:
+    oneOf:
+      - const: allwinner,sun4i-a10-i2s
+      - const: allwinner,sun6i-a31-i2s
+      - const: allwinner,sun8i-a83t-i2s
+      - const: allwinner,sun8i-h3-i2s
+      - const: allwinner,sun50i-a64-codec-i2s
+      - items:
+          - const: allwinner,sun50i-a64-i2s
+          - const: allwinner,sun8i-h3-i2s
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Bus Clock
+      - description: Module Clock
+
+  clock-names:
+    items:
+      - const: apb
+      - const: mod
+
+  # Even though it only applies to subschemas under the conditionals,
+  # not listing them here will trigger a warning because of the
+  # additionalsProperties set to false.
+  dmas: true
+  dma-names: true
+  resets:
+    maxItems: 1
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - allwinner,sun6i-a31-i2s
+              - allwinner,sun8i-a83t-i2s
+              - allwinner,sun8i-h3-i2s
+              - allwinner,sun50i-a64-codec-i2s
+
+    then:
+      required:
+        - resets
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: allwinner,sun8i-a83t-i2s
+
+    then:
+      properties:
+        dmas:
+          minItems: 1
+          maxItems: 2
+          items:
+            - description: RX DMA Channel
+            - description: TX DMA Channel
+          description:
+            Some controllers cannot receive but can only transmit
+            data. In such a case, the RX DMA channel is to be omitted.
+
+        dma-names:
+          oneOf:
+            - items:
+                - const: rx
+                - const: tx
+            - const: tx
+          description:
+            Some controllers cannot receive but can only transmit
+            data. In such a case, the RX name is to be omitted.
+
+    else:
+      properties:
+        dmas:
+          items:
+            - description: RX DMA Channel
+            - description: TX DMA Channel
+
+        dma-names:
+          items:
+            - const: rx
+            - const: tx
+
+required:
+  - "#sound-dai-cells"
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - dmas
+  - dma-names
+
+additionalProperties: false
+
+examples:
+  - |
+    i2s0: i2s@1c22400 {
+        #sound-dai-cells = <0>;
+        compatible = "allwinner,sun4i-a10-i2s";
+        reg = <0x01c22400 0x400>;
+        interrupts = <0 16 4>;
+        clocks = <&apb0_gates 3>, <&i2s0_clk>;
+        clock-names = "apb", "mod";
+        dmas = <&dma 0 3>, <&dma 0 3>;
+        dma-names = "rx", "tx";
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-spdif.yaml b/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-spdif.yaml
new file mode 100644
index 000000000000..e0284d8c3b63
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-spdif.yaml
@@ -0,0 +1,120 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/allwinner,sun4i-a10-spdif.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Allwinner A10 S/PDIF Controller Device Tree Bindings
+
+maintainers:
+  - Chen-Yu Tsai <wens@csie.org>
+  - Liam Girdwood <lgirdwood@gmail.com>
+  - Mark Brown <broonie@kernel.org>
+  - Maxime Ripard <maxime.ripard@bootlin.com>
+
+properties:
+  "#sound-dai-cells":
+    const: 0
+
+  compatible:
+    oneOf:
+      - const: allwinner,sun4i-a10-spdif
+      - const: allwinner,sun6i-a31-spdif
+      - const: allwinner,sun8i-h3-spdif
+      - const: allwinner,sun50i-h6-spdif
+      - items:
+          - const: allwinner,sun8i-a83t-spdif
+          - const: allwinner,sun8i-h3-spdif
+      - items:
+          - const: allwinner,sun50i-a64-spdif
+          - const: allwinner,sun8i-h3-spdif
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Bus Clock
+      - description: Module Clock
+
+  clock-names:
+    items:
+      - const: apb
+      - const: spdif
+
+  # Even though it only applies to subschemas under the conditionals,
+  # not listing them here will trigger a warning because of the
+  # additionalsProperties set to false.
+  dmas: true
+  dma-names: true
+  resets:
+    maxItems: 1
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - allwinner,sun6i-a31-spdif
+              - allwinner,sun8i-h3-spdif
+
+    then:
+      required:
+        - resets
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: allwinner,sun8i-h3-spdif
+
+    then:
+      properties:
+        dmas:
+          description: TX DMA Channel
+
+        dma-names:
+          const: tx
+
+    else:
+      properties:
+        dmas:
+          items:
+            - description: RX DMA Channel
+            - description: TX DMA Channel
+
+        dma-names:
+          items:
+            - const: rx
+            - const: tx
+
+required:
+  - "#sound-dai-cells"
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - dmas
+  - dma-names
+
+additionalProperties: false
+
+examples:
+  - |
+    spdif: spdif@1c21000 {
+        #sound-dai-cells = <0>;
+        compatible = "allwinner,sun4i-a10-spdif";
+        reg = <0x01c21000 0x40>;
+        interrupts = <13>;
+        clocks = <&apb0_gates 1>, <&spdif_clk>;
+        clock-names = "apb", "spdif";
+        dmas = <&dma 0 2>, <&dma 0 2>;
+        dma-names = "rx", "tx";
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/sound/amlogic,axg-tdm-formatters.txt b/Documentation/devicetree/bindings/sound/amlogic,axg-tdm-formatters.txt
index 3b94a715a0b9..8835a43edfbb 100644
--- a/Documentation/devicetree/bindings/sound/amlogic,axg-tdm-formatters.txt
+++ b/Documentation/devicetree/bindings/sound/amlogic,axg-tdm-formatters.txt
@@ -15,11 +15,15 @@ Required properties:
   * "lrclk"    : sample clock
   * "lrclk_sel": sample clock input multiplexer
 
-Example of TDMOUT_A on the A113 SoC:
+Optional property:
+- resets: phandle to the dedicated reset line of the tdm formatter.
+
+Example of TDMOUT_A on the S905X2 SoC:
 
 tdmout_a: audio-controller@500 {
 	compatible = "amlogic,axg-tdmout";
 	reg = <0x0 0x500 0x0 0x40>;
+	resets = <&clkc_audio AUD_RESET_TDMOUT_A>;
 	clocks = <&clkc_audio AUD_CLKID_TDMOUT_A>,
 		 <&clkc_audio AUD_CLKID_TDMOUT_A_SCLK>,
 		 <&clkc_audio AUD_CLKID_TDMOUT_A_SCLK_SEL>,
diff --git a/Documentation/devicetree/bindings/sound/amlogic,g12a-tohdmitx.txt b/Documentation/devicetree/bindings/sound/amlogic,g12a-tohdmitx.txt
new file mode 100644
index 000000000000..aa6c35570d31
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/amlogic,g12a-tohdmitx.txt
@@ -0,0 +1,55 @@
+* Amlogic HDMI Tx control glue
+
+Required properties:
+- compatible: "amlogic,g12a-tohdmitx"
+- reg: physical base address of the controller and length of memory
+       mapped region.
+- #sound-dai-cells: should be 1.
+
+Example on the S905X2 SoC:
+
+tohdmitx: audio-controller@744 {
+	compatible = "amlogic,g12a-tohdmitx";
+	reg = <0x0 0x744 0x0 0x4>;
+	#sound-dai-cells = <1>;
+};
+
+Example of an 'amlogic,axg-sound-card':
+
+sound {
+	compatible = "amlogic,axg-sound-card";
+
+[...]
+
+	dai-link-x {
+		sound-dai = <&tdmif_a>;
+		dai-format = "i2s";
+		dai-tdm-slot-tx-mask-0 = <1 1>;
+
+		codec-0 {
+			sound-dai = <&tohdmitx TOHDMITX_I2S_IN_A>;
+		};
+
+		codec-1 {
+			sound-dai = <&external_dac>;
+		};
+	};
+
+	dai-link-y {
+		sound-dai = <&tdmif_c>;
+		dai-format = "i2s";
+		dai-tdm-slot-tx-mask-0 = <1 1>;
+
+		codec {
+			sound-dai = <&tohdmitx TOHDMITX_I2S_IN_C>;
+		};
+	};
+
+	dai-link-z {
+		sound-dai = <&tohdmitx TOHDMITX_I2S_OUT>;
+
+		codec {
+			sound-dai = <&hdmi_tx>;
+		};
+	};
+};
diff --git a/Documentation/devicetree/bindings/sound/cs42xx8.txt b/Documentation/devicetree/bindings/sound/cs42xx8.txt
index 8619a156d038..bbfe39347c20 100644
--- a/Documentation/devicetree/bindings/sound/cs42xx8.txt
+++ b/Documentation/devicetree/bindings/sound/cs42xx8.txt
@@ -14,6 +14,11 @@ Required properties:
   - VA-supply, VD-supply, VLS-supply, VLC-supply: power supplies for the device,
     as covered in Documentation/devicetree/bindings/regulator/regulator.txt
 
+Optional properties:
+
+  - reset-gpios : a GPIO spec to define which pin is connected to the chip's
+    !RESET pin
+
 Example:
 
 cs42888: codec@48 {
@@ -25,4 +30,5 @@ cs42888: codec@48 {
 	VD-supply = <&reg_audio>;
 	VLS-supply = <&reg_audio>;
 	VLC-supply = <&reg_audio>;
+	reset-gpios = <&pca9557_b 1 GPIO_ACTIVE_LOW>;
 };
diff --git a/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt
index a58f79f5345c..c483dcec01f8 100644
--- a/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt
+++ b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt
@@ -44,6 +44,9 @@ Optional properties:
   		 please refer to pinctrl-bindings.txt
 - fck_parent : Should contain a valid clock name which will be used as parent
 	       for the McASP fck
+- auxclk-fs-ratio: When McASP is bus master indicates the ratio between AUCLK
+		   and FS rate if applicable:
+		   AUCLK rate = auxclk-fs-ratio * FS rate
 
 Optional GPIO support:
 If any McASP pin need to be used as GPIO then the McASP node must have:
diff --git a/Documentation/devicetree/bindings/sound/madera.txt b/Documentation/devicetree/bindings/sound/madera.txt
new file mode 100644
index 000000000000..5e669ce552f4
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/madera.txt
@@ -0,0 +1,67 @@
+Cirrus Logic Madera class audio codecs
+
+This describes audio configuration bindings for these codecs.
+
+See also the core bindings for the parent MFD driver:
+See Documentation/devicetree/bindings/mfd/madera.txt
+
+and defines for values used in these bindings:
+include/dt-bindings/sound/madera.h
+
+These properties are all contained in the parent MFD node.
+
+Optional properties:
+  - cirrus,dmic-ref : Indicates how the MICBIAS pins have been externally
+    connected to DMICs on each input, one cell per input.
+    <IN1 IN2 IN3 ...>
+    A value of 0 indicates MICVDD and is the default, other values depend on the
+    codec:
+    For CS47L35 one of the CS47L35_DMIC_REF_xxx values
+    For all other codecs one of the MADERA_DMIC_REF_xxx values
+    Also see the datasheet for a description of the INn_DMIC_SUP field.
+
+  - cirrus,inmode : A list of input mode settings for each input. A maximum of
+    16 cells, with four cells per input in the order INnAL, INnAR INnBL INnBR.
+    For non-muxed inputs the first two cells for that input set the mode for
+    the left and right channel and the second two cells must be 0.
+    For muxed inputs the first two cells for that input set the mode of the
+    left and right A inputs and the second two cells set the mode of the left
+    and right B inputs.
+    Valid mode values are one of the MADERA_INMODE_xxx. If the array is shorter
+    than the number of inputs the unspecified inputs default to
+    MADERA_INMODE_DIFF.
+
+  - cirrus,out-mono : Mono bit for each output, maximum of six cells if the
+    array is shorter outputs will be set to stereo.
+
+  - cirrus,max-channels-clocked : Maximum number of channels that I2S clocks
+    will be generated for. Useful when clock master for systems where the I2S
+    bus has multiple data lines.
+    One cell for each AIF, use a value of zero for AIFs that should be handled
+    normally.
+
+  - cirrus,pdm-fmt : PDM speaker data format, must contain 2 cells
+    (OUT5 and OUT6). See the PDM_SPKn_FMT field in the datasheet for a
+    description of this value.
+    The second cell is ignored for codecs that do not have OUT6.
+
+  - cirrus,pdm-mute : PDM mute format, must contain 2 cells
+    (OUT5 and OUT6). See the PDM_SPKn_CTRL_1 register in the datasheet for a
+    description of this value.
+    The second cell is ignored for codecs that do not have OUT6.
+
+Example:
+
+cs47l35@0 {
+	compatible = "cirrus,cs47l35";
+
+	cirrus,dmic-ref = <0 0 CS47L35_DMIC_REF_MICBIAS1B 0>;
+	cirrus,inmode = <
+		MADERA_INMODE_DMIC MADERA_INMODE_DMIC /* IN1A digital */
+		MADERA_INMODE_SE   MADERA_INMODE_SE   /* IN1B single-ended */
+		MADERA_INMODE_DIFF MADERA_INMODE_DIFF /* IN2 differential */
+		0 0 	/* not used on this codec */
+	>;
+	cirrus,out-mono = <0 0 0 0 0 0>;
+	cirrus,max-channels-clocked = <2 0 0>;
+};
diff --git a/Documentation/devicetree/bindings/sound/max98357a.txt b/Documentation/devicetree/bindings/sound/max98357a.txt
index 28645a2ff885..4bce14ce806f 100644
--- a/Documentation/devicetree/bindings/sound/max98357a.txt
+++ b/Documentation/devicetree/bindings/sound/max98357a.txt
@@ -9,6 +9,10 @@ Optional properties:
 - sdmode-gpios : GPIO specifier for the chip's SD_MODE pin.
         If this option is not specified then driver does not manage
         the pin state (e.g. chip is always on).
+- sdmode-delay : specify delay time for SD_MODE pin.
+        If this option is specified, which means it's required i2s clocks
+        ready before SD_MODE is unmuted in order to avoid the speaker pop noise.
+        It's observed that 5ms is sufficient.
 
 Example:
 
diff --git a/Documentation/devicetree/bindings/sound/rt1011.txt b/Documentation/devicetree/bindings/sound/rt1011.txt
new file mode 100644
index 000000000000..35a23e60d679
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/rt1011.txt
@@ -0,0 +1,32 @@
+RT1011 Mono Class D Audio Amplifier
+
+This device supports I2C only.
+
+Required properties:
+
+- compatible : "realtek,rt1011".
+
+- reg : The I2C address of the device. This I2C address decide by
+        two input pins (ASEL1 and ASEL2).
+        -------------------------------------
+        |   ASEL2   |  ASEL1   |  Address   |
+        -------------------------------------
+        |     0     |    0     |   0x38     |
+        -------------------------------------
+        |     0     |    1     |   0x39     |
+        -------------------------------------
+        |     1     |    0     |   0x3a     |
+        -------------------------------------
+        |     1     |    1     |   0x3b     |
+        -------------------------------------
+
+Pins on the device (for linking into audio routes) for RT1011:
+
+  * SPO
+
+Example:
+
+rt1011: codec@38 {
+	compatible = "realtek,rt1011";
+	reg = <0x38>;
+};
diff --git a/Documentation/devicetree/bindings/sound/rt1308.txt b/Documentation/devicetree/bindings/sound/rt1308.txt
new file mode 100755
index 000000000000..2d46084afce4
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/rt1308.txt
@@ -0,0 +1,17 @@
+RT1308 audio Amplifier
+
+This device supports I2C only.
+
+Required properties:
+
+- compatible : "realtek,rt1308".
+
+- reg : The I2C address of the device.
+
+
+Example:
+
+rt1308: rt1308@10 {
+	compatible = "realtek,rt1308";
+	reg = <0x10>;
+};
diff --git a/Documentation/devicetree/bindings/sound/st,stm32-i2s.txt b/Documentation/devicetree/bindings/sound/st,stm32-i2s.txt
index 58c341300552..cbf24bcd1b8d 100644
--- a/Documentation/devicetree/bindings/sound/st,stm32-i2s.txt
+++ b/Documentation/devicetree/bindings/sound/st,stm32-i2s.txt
@@ -18,7 +18,7 @@ Required properties:
     See Documentation/devicetree/bindings/dma/stm32-dma.txt.
   - dma-names: Identifier for each DMA request line. Must be "tx" and "rx".
   - pinctrl-names: should contain only value "default"
-  - pinctrl-0: see Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt
+  - pinctrl-0: see Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.yaml
 
 Optional properties:
   - resets: Reference to a reset controller asserting the reset controller
diff --git a/Documentation/devicetree/bindings/sound/st,stm32-sai.txt b/Documentation/devicetree/bindings/sound/st,stm32-sai.txt
index 3f4467ff0aa2..944743dd9212 100644
--- a/Documentation/devicetree/bindings/sound/st,stm32-sai.txt
+++ b/Documentation/devicetree/bindings/sound/st,stm32-sai.txt
@@ -41,7 +41,7 @@ SAI subnodes required properties:
 	"tx": if sai sub-block is configured as playback DAI
 	"rx": if sai sub-block is configured as capture DAI
   - pinctrl-names: should contain only value "default"
-  - pinctrl-0: see Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt
+  - pinctrl-0: see Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.yaml
 
 SAI subnodes Optional properties:
   - st,sync: specify synchronization mode.
diff --git a/Documentation/devicetree/bindings/sound/sun4i-i2s.txt b/Documentation/devicetree/bindings/sound/sun4i-i2s.txt
deleted file mode 100644
index 61e71c1729e0..000000000000
--- a/Documentation/devicetree/bindings/sound/sun4i-i2s.txt
+++ /dev/null
@@ -1,45 +0,0 @@
-* Allwinner A10 I2S controller
-
-The I2S bus (Inter-IC sound bus) is a serial link for digital
-audio data transfer between devices in the system.
-
-Required properties:
-
-- compatible: should be one of the following:
-   - "allwinner,sun4i-a10-i2s"
-   - "allwinner,sun6i-a31-i2s"
-   - "allwinner,sun8i-a83t-i2s"
-   - "allwinner,sun8i-h3-i2s"
-   - "allwinner,sun50i-a64-codec-i2s"
-- reg: physical base address of the controller and length of memory mapped
-  region.
-- interrupts: should contain the I2S interrupt.
-- dmas: DMA specifiers for tx and rx dma. See the DMA client binding,
-	Documentation/devicetree/bindings/dma/dma.txt
-- dma-names: should include "tx" and "rx".
-- clocks: a list of phandle + clock-specifer pairs, one for each entry in clock-names.
-- clock-names: should contain the following:
-   - "apb" : clock for the I2S bus interface
-   - "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"
-	- "allwinner,sun8i-a83t-i2s"
-	- "allwinner,sun8i-h3-i2s"
-	- "allwinner,sun50i-a64-codec-i2s"
-- resets: phandle to the reset line for this codec
-
-Example:
-
-i2s0: i2s@1c22400 {
-	#sound-dai-cells = <0>;
-	compatible = "allwinner,sun4i-a10-i2s";
-	reg = <0x01c22400 0x400>;
-	interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>;
-	clocks = <&apb0_gates 3>, <&i2s0_clk>;
-	clock-names = "apb", "mod";
-	dmas = <&dma SUN4I_DMA_NORMAL 3>,
-	       <&dma SUN4I_DMA_NORMAL 3>;
-	dma-names = "rx", "tx";
-};
diff --git a/Documentation/devicetree/bindings/sound/sunxi,sun4i-spdif.txt b/Documentation/devicetree/bindings/sound/sunxi,sun4i-spdif.txt
deleted file mode 100644
index 0c64a209c2e9..000000000000
--- a/Documentation/devicetree/bindings/sound/sunxi,sun4i-spdif.txt
+++ /dev/null
@@ -1,42 +0,0 @@
-Allwinner Sony/Philips Digital Interface Format (S/PDIF) Controller
-
-The Allwinner S/PDIF audio block is a transceiver that allows the
-processor to receive and transmit digital audio via an coaxial cable or
-a fibre cable.
-For now only playback is supported.
-
-Required properties:
-
-  - compatible		: should be one of the following:
-    - "allwinner,sun4i-a10-spdif": for the Allwinner A10 SoC
-    - "allwinner,sun6i-a31-spdif": for the Allwinner A31 SoC
-    - "allwinner,sun8i-h3-spdif": for the Allwinner H3 SoC
-
-  - reg			: Offset and length of the register set for the device.
-
-  - interrupts		: Contains the spdif interrupt.
-
-  - dmas		: Generic dma devicetree binding as described in
-			  Documentation/devicetree/bindings/dma/dma.txt.
-
-  - dma-names		: Two dmas have to be defined, "tx" and "rx".
-
-  - clocks		: Contains an entry for each entry in clock-names.
-
-  - clock-names		: Includes the following entries:
-	"apb"		  clock for the spdif bus.
-	"spdif"		  clock for spdif controller.
-
-  - resets		: reset specifier for the ahb reset (A31 and newer only)
-
-Example:
-
-spdif: spdif@1c21000 {
-	compatible = "allwinner,sun4i-a10-spdif";
-	reg = <0x01c21000 0x40>;
-	interrupts = <13>;
-	clocks = <&apb0_gates 1>, <&spdif_clk>;
-	clock-names = "apb", "spdif";
-	dmas = <&dma 0 2>, <&dma 0 2>;
-	dma-names = "rx", "tx";
-};