44 lines
1.6 KiB
Plaintext
44 lines
1.6 KiB
Plaintext
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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,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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- 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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