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
14   be accessed via the external address space read mode or the manual mode.
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   - $ref: /schemas/spi/spi-controller.yaml#
28       - items:
29           - enum:
30               - renesas,r8a774a1-rpc-if       # RZ/G2M
31               - renesas,r8a774b1-rpc-if       # RZ/G2N
32               - renesas,r8a774c0-rpc-if       # RZ/G2E
33               - renesas,r8a774e1-rpc-if       # RZ/G2H
34               - renesas,r8a7795-rpc-if        # R-Car H3
35               - renesas,r8a7796-rpc-if        # R-Car M3-W
36               - renesas,r8a77961-rpc-if       # R-Car M3-W+
37               - renesas,r8a77965-rpc-if       # R-Car M3-N
38               - renesas,r8a77970-rpc-if       # R-Car V3M
39               - renesas,r8a77980-rpc-if       # R-Car V3H
40               - renesas,r8a77990-rpc-if       # R-Car E3
41               - renesas,r8a77995-rpc-if       # R-Car D3
42               - renesas,r8a779a0-rpc-if       # R-Car V3U
43           - const: renesas,rcar-gen3-rpc-if   # a generic R-Car gen3 or RZ/G2{E,H,M,N} device
45       - items:
46           - enum:
47               - renesas,r8a779g0-rpc-if       # R-Car V4H
48               - renesas,r8a779h0-rpc-if       # R-Car V4M
49           - const: renesas,rcar-gen4-rpc-if   # a generic R-Car gen4 device
51       - items:
52           - enum:
53               - renesas,r9a07g043-rpc-if      # RZ/G2UL
54               - renesas,r9a07g044-rpc-if      # RZ/G2{L,LC}
55               - renesas,r9a07g054-rpc-if      # RZ/V2L
56           - const: renesas,rzg2l-rpc-if
60       - description: RPC-IF registers
61       - description: direct mapping read mode area
62       - description: write buffer area
64   reg-names:
66       - const: regs
67       - const: dirmap
68       - const: wbuf
77   power-domains:
84   "flash@[0-9a-f]+$":
92             - cfi-flash
93             - jedec,spi-nor
96   - compatible
97   - reg
98   - reg-names
99   - clocks
100   - power-domains
101   - resets
102   - '#address-cells'
103   - '#size-cells'
110           - renesas,rzg2l-rpc-if
115         - description: SPI Multi IO Register access clock (SPI_CLK2)
116         - description: SPI Multi IO Main clock (SPI_CLK).
126   - |
127     #include <dt-bindings/clock/renesas-cpg-mssr.h>
128     #include <dt-bindings/power/r8a77995-sysc.h>
131       compatible = "renesas,r8a77995-rpc-if", "renesas,rcar-gen3-rpc-if";
135       reg-names = "regs", "dirmap", "wbuf";
137       power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
139       #address-cells = <1>;
140       #size-cells = <0>;
143         compatible = "jedec,spi-nor";
145         spi-max-frequency = <40000000>;
146         spi-tx-bus-width = <1>;
147         spi-rx-bus-width = <1>;