1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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.
17 The flash interface is selected based on the "compatible" property of this
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#
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
47 - renesas,r8a779g0-rpc-if # R-Car V4H
48 - const: renesas,rcar-gen4-rpc-if # a generic R-Car gen4 device
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
83 additionalProperties: true
107 - renesas,rzg2l-rpc-if
112 - description: SPI Multi IO Register access clock (SPI_CLK2)
113 - description: SPI Multi IO Main clock (SPI_CLK).
120 unevaluatedProperties: false
124 #include <dt-bindings/clock/renesas-cpg-mssr.h>
125 #include <dt-bindings/power/r8a77995-sysc.h>
128 compatible = "renesas,r8a77995-rpc-if", "renesas,rcar-gen3-rpc-if";
129 reg = <0xee200000 0x200>,
130 <0x08000000 0x4000000>,
132 reg-names = "regs", "dirmap", "wbuf";
133 clocks = <&cpg CPG_MOD 917>;
134 power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
136 #address-cells = <1>;
140 compatible = "jedec,spi-nor";
142 spi-max-frequency = <40000000>;
143 spi-tx-bus-width = <1>;
144 spi-rx-bus-width = <1>;