Device tree configuration for Renesas RSPI/QSPI driver Required properties: - compatible : For Renesas Serial Peripheral Interface on legacy SH: "renesas,rspi-", "renesas,rspi" as fallback. For Renesas Serial Peripheral Interface on RZ/A: "renesas,rspi-", "renesas,rspi-rz" as fallback. For Quad Serial Peripheral Interface on R-Car Gen2 and RZ/G1 devices: "renesas,qspi-", "renesas,qspi" as fallback. Examples with soctypes are: - "renesas,rspi-sh7757" (SH) - "renesas,rspi-r7s72100" (RZ/A1H) - "renesas,rspi-r7s9210" (RZ/A2) - "renesas,qspi-r8a7743" (RZ/G1M) - "renesas,qspi-r8a7744" (RZ/G1N) - "renesas,qspi-r8a7745" (RZ/G1E) - "renesas,qspi-r8a77470" (RZ/G1C) - "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. - 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"; };