1Device tree configuration for Renesas RSPI/QSPI driver 2 3Required properties: 4- compatible : For Renesas Serial Peripheral Interface on legacy SH: 5 "renesas,rspi-<soctype>", "renesas,rspi" as fallback. 6 For Renesas Serial Peripheral Interface on RZ/A: 7 "renesas,rspi-<soctype>", "renesas,rspi-rz" as fallback. 8 For Quad Serial Peripheral Interface on R-Car Gen2 and 9 RZ/G1 devices: 10 "renesas,qspi-<soctype>", "renesas,qspi" as fallback. 11 Examples with soctypes are: 12 - "renesas,rspi-sh7757" (SH) 13 - "renesas,rspi-r7s72100" (RZ/A1H) 14 - "renesas,rspi-r7s9210" (RZ/A2) 15 - "renesas,qspi-r8a7743" (RZ/G1M) 16 - "renesas,qspi-r8a7744" (RZ/G1N) 17 - "renesas,qspi-r8a7745" (RZ/G1E) 18 - "renesas,qspi-r8a77470" (RZ/G1C) 19 - "renesas,qspi-r8a7790" (R-Car H2) 20 - "renesas,qspi-r8a7791" (R-Car M2-W) 21 - "renesas,qspi-r8a7792" (R-Car V2H) 22 - "renesas,qspi-r8a7793" (R-Car M2-N) 23 - "renesas,qspi-r8a7794" (R-Car E2) 24- reg : Address start and address range size of the device 25- interrupts : A list of interrupt-specifiers, one for each entry in 26 interrupt-names. 27 If interrupt-names is not present, an interrupt specifier 28 for a single muxed interrupt. 29- interrupt-names : A list of interrupt names. Should contain (if present): 30 - "error" for SPEI, 31 - "rx" for SPRI, 32 - "tx" to SPTI, 33 - "mux" for a single muxed interrupt. 34- num-cs : Number of chip selects. Some RSPI cores have more than 1. 35- #address-cells : Must be <1> 36- #size-cells : Must be <0> 37 38Optional properties: 39- clocks : Must contain a reference to the functional clock. 40- dmas : Must contain a list of two references to DMA specifiers, 41 one for transmission, and one for reception. 42- dma-names : Must contain a list of two DMA names, "tx" and "rx". 43 44Pinctrl properties might be needed, too. See 45Documentation/devicetree/bindings/pinctrl/renesas,*. 46 47Examples: 48 49 spi0: spi@e800c800 { 50 compatible = "renesas,rspi-r7s72100", "renesas,rspi-rz"; 51 reg = <0xe800c800 0x24>; 52 interrupts = <0 238 IRQ_TYPE_LEVEL_HIGH>, 53 <0 239 IRQ_TYPE_LEVEL_HIGH>, 54 <0 240 IRQ_TYPE_LEVEL_HIGH>; 55 interrupt-names = "error", "rx", "tx"; 56 interrupt-parent = <&gic>; 57 num-cs = <1>; 58 #address-cells = <1>; 59 #size-cells = <0>; 60 }; 61 62 spi: spi@e6b10000 { 63 compatible = "renesas,qspi-r8a7791", "renesas,qspi"; 64 reg = <0 0xe6b10000 0 0x2c>; 65 interrupt-parent = <&gic>; 66 interrupts = <0 184 IRQ_TYPE_LEVEL_HIGH>; 67 clocks = <&mstp9_clks R8A7791_CLK_QSPI_MOD>; 68 num-cs = <1>; 69 #address-cells = <1>; 70 #size-cells = <0>; 71 dmas = <&dmac0 0x17>, <&dmac0 0x18>; 72 dma-names = "tx", "rx"; 73 }; 74