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+# 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
+
+ dmas:
+ items:
+ - description: RX DMA Channel
+ - description: TX DMA Channel
+
+ dma-names:
+ items:
+ - const: rx
+ - const: tx
+
+ # 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.
+ 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
+
+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";
+ };
+
+...
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-* 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";
-};
The Allwinner SoCs feature an I2S controller across multiple SoC generations. However, earlier generations were a bit simpler than the subsequent ones, and for example would always have RX and TX capabilities, and no reset lines. Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> --- Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-i2s.yaml | 100 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++- Documentation/devicetree/bindings/sound/sun4i-i2s.txt | 45 +-------------------------------- 2 files changed, 100 insertions(+), 45 deletions(-) create mode 100644 Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-i2s.yaml delete mode 100644 Documentation/devicetree/bindings/sound/sun4i-i2s.txt base-commit: 86c9acd4fdf5b2e1648a6cf3d6e99a7f0d35cb4f