bindings/memory-controllers/renesas%2Crpc-if.yaml

1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/memory-controllers/renesas,rpc-if.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Renesas Reduced Pin Count Interface (RPC-IF)
10   - Sergei Shtylyov <sergei.shtylyov@gmail.com>
13   Renesas RPC-IF allows a SPI flash or HyperFlash connected to the SoC to
16   The flash chip itself should be represented by a subnode of the RPC-IF node.
19   - if it contains "jedec,spi-nor", then SPI is used;
20   - if it contains "cfi-flash", then HyperFlash is used.
23   - $ref: /schemas/spi/spi-controller.yaml#
28       - items:
29           - enum:
30               - renesas,r8a774a1-rpc-if       # RZ/G2M
31               - renesas,r8a774b1-rpc-if       # RZ/G2N
32               - renesas,r8a774c0-rpc-if       # RZ/G2E
33               - renesas,r8a774e1-rpc-if       # RZ/G2H
34               - renesas,r8a7795-rpc-if        # R-Car H3
35               - renesas,r8a7796-rpc-if        # R-Car M3-W
36               - renesas,r8a77961-rpc-if       # R-Car M3-W+
37               - renesas,r8a77965-rpc-if       # R-Car M3-N
38               - renesas,r8a77970-rpc-if       # R-Car V3M
39               - renesas,r8a77980-rpc-if       # R-Car V3H
40               - renesas,r8a77990-rpc-if       # R-Car E3
41               - renesas,r8a77995-rpc-if       # R-Car D3
42               - renesas,r8a779a0-rpc-if       # R-Car V3U
43           - const: renesas,rcar-gen3-rpc-if   # a generic R-Car gen3 or RZ/G2{E,H,M,N} device
45       - items:
46           - enum:
47               - renesas,r8a779g0-rpc-if       # R-Car V4H
48           - const: renesas,rcar-gen4-rpc-if   # a generic R-Car gen4 device
50       - items:
51           - enum:
52               - renesas,r9a07g043-rpc-if      # RZ/G2UL
53               - renesas,r9a07g044-rpc-if      # RZ/G2{L,LC}
54               - renesas,r9a07g054-rpc-if      # RZ/V2L
55           - const: renesas,rzg2l-rpc-if
59       - description: RPC-IF registers
60       - description: direct mapping read mode area
61       - description: write buffer area
63   reg-names:
65       - const: regs
66       - const: dirmap
67       - const: wbuf
74   power-domains:
81   "flash@[0-9a-f]+$":
87             - cfi-flash
88             - jedec,spi-nor
91   - compatible
92   - reg
93   - reg-names
94   - clocks
95   - power-domains
96   - resets
97   - '#address-cells'
98   - '#size-cells'
105           - renesas,rzg2l-rpc-if
110         - description: SPI Multi IO Register access clock (SPI_CLK2)
111         - description: SPI Multi IO Main clock (SPI_CLK).
121   - |
122     #include <dt-bindings/clock/renesas-cpg-mssr.h>
123     #include <dt-bindings/power/r8a77995-sysc.h>
126       compatible = "renesas,r8a77995-rpc-if", "renesas,rcar-gen3-rpc-if";
130       reg-names = "regs", "dirmap", "wbuf";
132       power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
134       #address-cells = <1>;
135       #size-cells = <0>;
138         compatible = "jedec,spi-nor";
140         spi-max-frequency = <40000000>;
141         spi-tx-bus-width = <1>;
142         spi-rx-bus-width = <1>;