| Device tree configuration for Renesas RSPI/QSPI driver |
| |
| Required properties: |
| - compatible : For Renesas Serial Peripheral Interface on legacy SH: |
| "renesas,rspi-<soctype>", "renesas,rspi" as fallback. |
| For Renesas Serial Peripheral Interface on RZ/A1H: |
| "renesas,rspi-<soctype>", "renesas,rspi-rz" as fallback. |
| For Quad Serial Peripheral Interface on R-Car Gen2: |
| "renesas,qspi-<soctype>", "renesas,qspi" as fallback. |
| Examples with soctypes are: |
| - "renesas,rspi-sh7757" (SH) |
| - "renesas,rspi-r7s72100" (RZ/A1H) |
| - "renesas,qspi-r8a7790" (R-Car H2) |
| - "renesas,qspi-r8a7791" (R-Car M2-W) |
| - "renesas,qspi-r8a7792" (R-Car V2H) |
| - "renesas,qspi-r8a7793" (R-Car M2-N) |
| - "renesas,qspi-r8a7794" (R-Car E2) |
| - reg : Address start and address range size of the device |
| - interrupts : A list of interrupt-specifiers, one for each entry in |
| interrupt-names. |
| If interrupt-names is not present, an interrupt specifier |
| for a single muxed interrupt. |
| - interrupt-names : A list of interrupt names. Should contain (if present): |
| - "error" for SPEI, |
| - "rx" for SPRI, |
| - "tx" to SPTI, |
| - "mux" for a single muxed interrupt. |
| - interrupt-parent : The phandle for the interrupt controller that |
| services interrupts for this device. |
| - num-cs : Number of chip selects. Some RSPI cores have more than 1. |
| - #address-cells : Must be <1> |
| - #size-cells : Must be <0> |
| |
| Optional properties: |
| - clocks : Must contain a reference to the functional clock. |
| - dmas : Must contain a list of two references to DMA specifiers, |
| one for transmission, and one for reception. |
| - dma-names : Must contain a list of two DMA names, "tx" and "rx". |
| |
| Pinctrl properties might be needed, too. See |
| Documentation/devicetree/bindings/pinctrl/renesas,*. |
| |
| Examples: |
| |
| spi0: spi@e800c800 { |
| compatible = "renesas,rspi-r7s72100", "renesas,rspi-rz"; |
| reg = <0xe800c800 0x24>; |
| interrupts = <0 238 IRQ_TYPE_LEVEL_HIGH>, |
| <0 239 IRQ_TYPE_LEVEL_HIGH>, |
| <0 240 IRQ_TYPE_LEVEL_HIGH>; |
| interrupt-names = "error", "rx", "tx"; |
| interrupt-parent = <&gic>; |
| num-cs = <1>; |
| #address-cells = <1>; |
| #size-cells = <0>; |
| }; |
| |
| spi: spi@e6b10000 { |
| compatible = "renesas,qspi-r8a7791", "renesas,qspi"; |
| reg = <0 0xe6b10000 0 0x2c>; |
| interrupt-parent = <&gic>; |
| interrupts = <0 184 IRQ_TYPE_LEVEL_HIGH>; |
| clocks = <&mstp9_clks R8A7791_CLK_QSPI_MOD>; |
| num-cs = <1>; |
| #address-cells = <1>; |
| #size-cells = <0>; |
| dmas = <&dmac0 0x17>, <&dmac0 0x18>; |
| dma-names = "tx", "rx"; |
| }; |
