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dt-bindings: dma: renesas,usb-dmac: convert bindings to json-schema
Convert Renesas R-Car USB-DMA Controller bindings documentation to json-schema. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/1587110829-26609-3-git-send-email-yoshihiro.shimoda.uh@renesas.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Yoshihiro Shimoda
Vinod Koul
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b3cb14310e
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* Renesas USB DMA Controller Device Tree bindings
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Required Properties:
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-compatible: "renesas,<soctype>-usb-dmac", "renesas,usb-dmac" as fallback.
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Examples with soctypes are:
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- "renesas,r8a7743-usb-dmac" (RZ/G1M)
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- "renesas,r8a7744-usb-dmac" (RZ/G1N)
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- "renesas,r8a7745-usb-dmac" (RZ/G1E)
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- "renesas,r8a77470-usb-dmac" (RZ/G1C)
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- "renesas,r8a774a1-usb-dmac" (RZ/G2M)
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- "renesas,r8a774b1-usb-dmac" (RZ/G2N)
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- "renesas,r8a774c0-usb-dmac" (RZ/G2E)
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- "renesas,r8a7790-usb-dmac" (R-Car H2)
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- "renesas,r8a7791-usb-dmac" (R-Car M2-W)
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- "renesas,r8a7793-usb-dmac" (R-Car M2-N)
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- "renesas,r8a7794-usb-dmac" (R-Car E2)
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- "renesas,r8a7795-usb-dmac" (R-Car H3)
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- "renesas,r8a7796-usb-dmac" (R-Car M3-W)
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- "renesas,r8a77961-usb-dmac" (R-Car M3-W+)
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- "renesas,r8a77965-usb-dmac" (R-Car M3-N)
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- "renesas,r8a77990-usb-dmac" (R-Car E3)
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- "renesas,r8a77995-usb-dmac" (R-Car D3)
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- reg: base address and length of the registers block for the DMAC
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- interrupts: interrupt specifiers for the DMAC, one for each entry in
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interrupt-names.
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- interrupt-names: one entry per channel, named "ch%u", where %u is the
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channel number ranging from zero to the number of channels minus one.
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- clocks: a list of phandle + clock-specifier pairs.
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- #dma-cells: must be <1>, the cell specifies the channel number of the DMAC
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port connected to the DMA client.
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- dma-channels: number of DMA channels
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Example: R8A7790 (R-Car H2) USB-DMACs
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usb_dmac0: dma-controller@e65a0000 {
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compatible = "renesas,r8a7790-usb-dmac", "renesas,usb-dmac";
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reg = <0 0xe65a0000 0 0x100>;
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interrupts = <0 109 IRQ_TYPE_LEVEL_HIGH
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0 109 IRQ_TYPE_LEVEL_HIGH>;
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interrupt-names = "ch0", "ch1";
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clocks = <&mstp3_clks R8A7790_CLK_USBDMAC0>;
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#dma-cells = <1>;
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dma-channels = <2>;
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};
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usb_dmac1: dma-controller@e65b0000 {
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compatible = "renesas,usb-dmac";
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reg = <0 0xe65b0000 0 0x100>;
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interrupts = <0 110 IRQ_TYPE_LEVEL_HIGH
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0 110 IRQ_TYPE_LEVEL_HIGH>;
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interrupt-names = "ch0", "ch1";
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clocks = <&mstp3_clks R8A7790_CLK_USBDMAC1>;
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#dma-cells = <1>;
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dma-channels = <2>;
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};
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102
Documentation/devicetree/bindings/dma/renesas,usb-dmac.yaml
Normal file
102
Documentation/devicetree/bindings/dma/renesas,usb-dmac.yaml
Normal file
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/dma/renesas,usb-dmac.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Renesas USB DMA Controller
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maintainers:
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- Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
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allOf:
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- $ref: "dma-controller.yaml#"
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properties:
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compatible:
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items:
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- enum:
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- renesas,r8a7743-usb-dmac # RZ/G1M
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- renesas,r8a7744-usb-dmac # RZ/G1N
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- renesas,r8a7745-usb-dmac # RZ/G1E
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- renesas,r8a77470-usb-dmac # RZ/G1C
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- renesas,r8a774a1-usb-dmac # RZ/G2M
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- renesas,r8a774b1-usb-dmac # RZ/G2N
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- renesas,r8a774c0-usb-dmac # RZ/G2E
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- renesas,r8a7790-usb-dmac # R-Car H2
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- renesas,r8a7791-usb-dmac # R-Car M2-W
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- renesas,r8a7793-usb-dmac # R-Car M2-N
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- renesas,r8a7794-usb-dmac # R-Car E2
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- renesas,r8a7795-usb-dmac # R-Car H3
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- renesas,r8a7796-usb-dmac # R-Car M3-W
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- renesas,r8a77961-usb-dmac # R-Car M3-W+
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- renesas,r8a77965-usb-dmac # R-Car M3-N
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- renesas,r8a77990-usb-dmac # R-Car E3
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- renesas,r8a77995-usb-dmac # R-Car D3
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- const: renesas,usb-dmac
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reg:
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maxItems: 1
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interrupts:
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minItems: 2
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maxItems: 2
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interrupt-names:
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items:
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- pattern: ch0
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- pattern: ch1
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clocks:
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maxItems: 1
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'#dma-cells':
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const: 1
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description:
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The cell specifies the channel number of the DMAC port connected to
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the DMA client.
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dma-channels:
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const: 2
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iommus:
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minItems: 2
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maxItems: 2
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power-domains:
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maxItems: 1
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resets:
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maxItems: 1
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required:
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- compatible
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- reg
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- interrupts
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- interrupt-names
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- clocks
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- '#dma-cells'
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- dma-channels
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- power-domains
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- resets
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/clock/r8a7790-cpg-mssr.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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#include <dt-bindings/power/r8a7790-sysc.h>
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usb_dmac0: dma-controller@e65a0000 {
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compatible = "renesas,r8a7790-usb-dmac", "renesas,usb-dmac";
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reg = <0xe65a0000 0x100>;
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interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>;
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interrupt-names = "ch0", "ch1";
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clocks = <&cpg CPG_MOD 330>;
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power-domains = <&sysc R8A7790_PD_ALWAYS_ON>;
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resets = <&cpg 330>;
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#dma-cells = <1>;
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dma-channels = <2>;
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};
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