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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 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,qspi-r8a7743" (RZ/G1M)
15 - "renesas,qspi-r8a7745" (RZ/G1E)
16 - "renesas,qspi-r8a7790" (R-Car H2)
17 - "renesas,qspi-r8a7791" (R-Car M2-W)
18 - "renesas,qspi-r8a7792" (R-Car V2H)
19 - "renesas,qspi-r8a7793" (R-Car M2-N)
20 - "renesas,qspi-r8a7794" (R-Car E2)
21- reg : Address start and address range size of the device
22- interrupts : A list of interrupt-specifiers, one for each entry in
23 interrupt-names.
24 If interrupt-names is not present, an interrupt specifier
25 for a single muxed interrupt.
26- interrupt-names : A list of interrupt names. Should contain (if present):
27 - "error" for SPEI,
28 - "rx" for SPRI,
29 - "tx" to SPTI,
30 - "mux" for a single muxed interrupt.
31- interrupt-parent : The phandle for the interrupt controller that
32 services interrupts for this device.
33- num-cs : Number of chip selects. Some RSPI cores have more than 1.
34- #address-cells : Must be <1>
35- #size-cells : Must be <0>
36
37Optional properties:
38- clocks : Must contain a reference to the functional clock.
39- dmas : Must contain a list of two references to DMA specifiers,
40 one for transmission, and one for reception.
41- dma-names : Must contain a list of two DMA names, "tx" and "rx".
42
43Pinctrl properties might be needed, too. See
44Documentation/devicetree/bindings/pinctrl/renesas,*.
45
46Examples:
47
48 spi0: spi@e800c800 {
49 compatible = "renesas,rspi-r7s72100", "renesas,rspi-rz";
50 reg = <0xe800c800 0x24>;
51 interrupts = <0 238 IRQ_TYPE_LEVEL_HIGH>,
52 <0 239 IRQ_TYPE_LEVEL_HIGH>,
53 <0 240 IRQ_TYPE_LEVEL_HIGH>;
54 interrupt-names = "error", "rx", "tx";
55 interrupt-parent = <&gic>;
56 num-cs = <1>;
57 #address-cells = <1>;
58 #size-cells = <0>;
59 };
60
61 spi: spi@e6b10000 {
62 compatible = "renesas,qspi-r8a7791", "renesas,qspi";
63 reg = <0 0xe6b10000 0 0x2c>;
64 interrupt-parent = <&gic>;
65 interrupts = <0 184 IRQ_TYPE_LEVEL_HIGH>;
66 clocks = <&mstp9_clks R8A7791_CLK_QSPI_MOD>;
67 num-cs = <1>;
68 #address-cells = <1>;
69 #size-cells = <0>;
70 dmas = <&dmac0 0x17>, <&dmac0 0x18>;
71 dma-names = "tx", "rx";
72 };