The older Allwinner SoCs have a DMA controller supported in Linux, with a matching Device Tree binding. Now that we have the DT validation in place, let's convert the device tree bindings for that controller over to a YAML schemas. Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxx> --- .../bindings/dma/allwinner,sun4i-a10-dma.yaml | 55 +++++++++++++++++++ .../devicetree/bindings/dma/sun4i-dma.txt | 45 --------------- 2 files changed, 55 insertions(+), 45 deletions(-) create mode 100644 Documentation/devicetree/bindings/dma/allwinner,sun4i-a10-dma.yaml delete mode 100644 Documentation/devicetree/bindings/dma/sun4i-dma.txt diff --git a/Documentation/devicetree/bindings/dma/allwinner,sun4i-a10-dma.yaml b/Documentation/devicetree/bindings/dma/allwinner,sun4i-a10-dma.yaml new file mode 100644 index 000000000000..15abc0f9429f --- /dev/null +++ b/Documentation/devicetree/bindings/dma/allwinner,sun4i-a10-dma.yaml @@ -0,0 +1,55 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/dma/allwinner,sun4i-a10-dma.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Allwinner A10 DMA Controller Device Tree Bindings + +maintainers: + - Chen-Yu Tsai <wens@xxxxxxxx> + - Maxime Ripard <maxime.ripard@xxxxxxxxxxx> + +allOf: + - $ref: "dma-controller.yaml#" + +properties: + "#dma-cells": + const: 2 + description: + The first cell is either 0 or 1, the former to use the normal + DMA, 1 for dedicated DMA. The second cell is the request line + number. + + compatible: + const: allwinner,sun4i-a10-dma + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + +required: + - "#dma-cells" + - compatible + - reg + - interrupts + - clocks + +additionalProperties: false + +examples: + - | + dma: dma-controller@1c02000 { + compatible = "allwinner,sun4i-a10-dma"; + reg = <0x01c02000 0x1000>; + interrupts = <27>; + clocks = <&ahb_gates 6>; + #dma-cells = <2>; + }; + +... diff --git a/Documentation/devicetree/bindings/dma/sun4i-dma.txt b/Documentation/devicetree/bindings/dma/sun4i-dma.txt deleted file mode 100644 index 8ad556aca70b..000000000000 --- a/Documentation/devicetree/bindings/dma/sun4i-dma.txt +++ /dev/null @@ -1,45 +0,0 @@ -Allwinner A10 DMA Controller - -This driver follows the generic DMA bindings defined in dma.txt. - -Required properties: - -- compatible: Must be "allwinner,sun4i-a10-dma" -- reg: Should contain the registers base address and length -- interrupts: Should contain a reference to the interrupt used by this device -- clocks: Should contain a reference to the parent AHB clock -- #dma-cells : Should be 2, first cell denoting normal or dedicated dma, - second cell holding the request line number. - -Example: - dma: dma-controller@1c02000 { - compatible = "allwinner,sun4i-a10-dma"; - reg = <0x01c02000 0x1000>; - interrupts = <27>; - clocks = <&ahb_gates 6>; - #dma-cells = <2>; - }; - -Clients: - -DMA clients connected to the Allwinner A10 DMA controller must use the -format described in the dma.txt file, using a three-cell specifier for -each channel: a phandle plus two integer cells. -The three cells in order are: - -1. A phandle pointing to the DMA controller. -2. Whether it is using normal (0) or dedicated (1) channels -3. The port ID as specified in the datasheet - -Example: - spi2: spi@1c17000 { - compatible = "allwinner,sun4i-a10-spi"; - reg = <0x01c17000 0x1000>; - interrupts = <0 12 4>; - clocks = <&ahb_gates 22>, <&spi2_clk>; - clock-names = "ahb", "mod"; - dmas = <&dma 1 29>, <&dma 1 28>; - dma-names = "rx", "tx"; - #address-cells = <1>; - #size-cells = <0>; - }; -- 2.21.0
