projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| a7267831 YS |
1 | * Renesas USB DMA Controller Device Tree bindings |
| 2 | ||
| 3 | Required Properties: | |
| 0b2eed49 SH |
4 | -compatible: "renesas,<soctype>-usb-dmac", "renesas,usb-dmac" as fallback. |
| 5 | Examples with soctypes are: | |
| 6 | - "renesas,r8a7790-usb-dmac" (R-Car H2) | |
| 7 | - "renesas,r8a7791-usb-dmac" (R-Car M2-W) | |
| 8 | - "renesas,r8a7793-usb-dmac" (R-Car M2-N) | |
| 9 | - "renesas,r8a7794-usb-dmac" (R-Car E2) | |
| 10 | - "renesas,r8a7795-usb-dmac" (R-Car H3) | |
| a7267831 YS |
11 | - reg: base address and length of the registers block for the DMAC |
| 12 | - interrupts: interrupt specifiers for the DMAC, one for each entry in | |
| 13 | interrupt-names. | |
| 14 | - interrupt-names: one entry per channel, named "ch%u", where %u is the | |
| 15 | channel number ranging from zero to the number of channels minus one. | |
| 16 | - clocks: a list of phandle + clock-specifier pairs. | |
| 17 | - #dma-cells: must be <1>, the cell specifies the channel number of the DMAC | |
| 18 | port connected to the DMA client. | |
| 19 | - dma-channels: number of DMA channels | |
| 20 | ||
| 21 | Example: R8A7790 (R-Car H2) USB-DMACs | |
| 22 | ||
| 23 | usb_dmac0: dma-controller@e65a0000 { | |
| 0b2eed49 | 24 | compatible = "renesas,r8a7790-usb-dmac", "renesas,usb-dmac"; |
| a7267831 YS |
25 | reg = <0 0xe65a0000 0 0x100>; |
| 26 | interrupts = <0 109 IRQ_TYPE_LEVEL_HIGH | |
| 27 | 0 109 IRQ_TYPE_LEVEL_HIGH>; | |
| 28 | interrupt-names = "ch0", "ch1"; | |
| 29 | clocks = <&mstp3_clks R8A7790_CLK_USBDMAC0>; | |
| 30 | #dma-cells = <1>; | |
| 31 | dma-channels = <2>; | |
| 32 | }; | |
| 33 | ||
| 34 | usb_dmac1: dma-controller@e65b0000 { | |
| 35 | compatible = "renesas,usb-dmac"; | |
| 36 | reg = <0 0xe65b0000 0 0x100>; | |
| 37 | interrupts = <0 110 IRQ_TYPE_LEVEL_HIGH | |
| 38 | 0 110 IRQ_TYPE_LEVEL_HIGH>; | |
| 39 | interrupt-names = "ch0", "ch1"; | |
| 40 | clocks = <&mstp3_clks R8A7790_CLK_USBDMAC1>; | |
| 41 | #dma-cells = <1>; | |
| 42 | dma-channels = <2>; | |
| 43 | }; |