| * Renesas USB DMA Controller Device Tree bindings |
| |
| Required Properties: |
| -compatible: "renesas,<soctype>-usb-dmac", "renesas,usb-dmac" as fallback. |
| Examples with soctypes are: |
| - "renesas,r8a7790-usb-dmac" (R-Car H2) |
| - "renesas,r8a7791-usb-dmac" (R-Car M2-W) |
| - "renesas,r8a7793-usb-dmac" (R-Car M2-N) |
| - "renesas,r8a7794-usb-dmac" (R-Car E2) |
| - "renesas,r8a7795-usb-dmac" (R-Car H3) |
| - "renesas,r8a7796-usb-dmac" (R-Car M3-W) |
| - reg: base address and length of the registers block for the DMAC |
| - interrupts: interrupt specifiers for the DMAC, one for each entry in |
| interrupt-names. |
| - interrupt-names: one entry per channel, named "ch%u", where %u is the |
| channel number ranging from zero to the number of channels minus one. |
| - clocks: a list of phandle + clock-specifier pairs. |
| - #dma-cells: must be <1>, the cell specifies the channel number of the DMAC |
| port connected to the DMA client. |
| - dma-channels: number of DMA channels |
| |
| Example: R8A7790 (R-Car H2) USB-DMACs |
| |
| usb_dmac0: dma-controller@e65a0000 { |
| compatible = "renesas,r8a7790-usb-dmac", "renesas,usb-dmac"; |
| reg = <0 0xe65a0000 0 0x100>; |
| interrupts = <0 109 IRQ_TYPE_LEVEL_HIGH |
| 0 109 IRQ_TYPE_LEVEL_HIGH>; |
| interrupt-names = "ch0", "ch1"; |
| clocks = <&mstp3_clks R8A7790_CLK_USBDMAC0>; |
| #dma-cells = <1>; |
| dma-channels = <2>; |
| }; |
| |
| usb_dmac1: dma-controller@e65b0000 { |
| compatible = "renesas,usb-dmac"; |
| reg = <0 0xe65b0000 0 0x100>; |
| interrupts = <0 110 IRQ_TYPE_LEVEL_HIGH |
| 0 110 IRQ_TYPE_LEVEL_HIGH>; |
| interrupt-names = "ch0", "ch1"; |
| clocks = <&mstp3_clks R8A7790_CLK_USBDMAC1>; |
| #dma-cells = <1>; |
| dma-channels = <2>; |
| }; |
