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