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139 lines
3.6 KiB
139 lines
3.6 KiB
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/memory-controllers/renesas,rpc-if.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: Renesas Reduced Pin Count Interface (RPC-IF) |
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maintainers: |
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- Sergei Shtylyov <[email protected]> |
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description: | |
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Renesas RPC-IF allows a SPI flash or HyperFlash connected to the SoC to |
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be accessed via the external address space read mode or the manual mode. |
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The flash chip itself should be represented by a subnode of the RPC-IF node. |
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The flash interface is selected based on the "compatible" property of this |
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subnode: |
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- if it contains "jedec,spi-nor", then SPI is used; |
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- if it contains "cfi-flash", then HyperFlash is used. |
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allOf: |
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- $ref: "/schemas/spi/spi-controller.yaml#" |
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properties: |
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compatible: |
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oneOf: |
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- items: |
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- enum: |
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- renesas,r8a774a1-rpc-if # RZ/G2M |
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- renesas,r8a774b1-rpc-if # RZ/G2N |
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- renesas,r8a774c0-rpc-if # RZ/G2E |
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- renesas,r8a774e1-rpc-if # RZ/G2H |
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- renesas,r8a7795-rpc-if # R-Car H3 |
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- renesas,r8a7796-rpc-if # R-Car M3-W |
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- renesas,r8a77961-rpc-if # R-Car M3-W+ |
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- renesas,r8a77965-rpc-if # R-Car M3-N |
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- renesas,r8a77970-rpc-if # R-Car V3M |
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- renesas,r8a77980-rpc-if # R-Car V3H |
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- renesas,r8a77990-rpc-if # R-Car E3 |
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- renesas,r8a77995-rpc-if # R-Car D3 |
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- renesas,r8a779a0-rpc-if # R-Car V3U |
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- const: renesas,rcar-gen3-rpc-if # a generic R-Car gen3 or RZ/G2{E,H,M,N} device |
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- items: |
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- enum: |
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- renesas,r9a07g043-rpc-if # RZ/G2UL |
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- renesas,r9a07g044-rpc-if # RZ/G2{L,LC} |
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- renesas,r9a07g054-rpc-if # RZ/V2L |
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- const: renesas,rzg2l-rpc-if |
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reg: |
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items: |
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- description: RPC-IF registers |
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- description: direct mapping read mode area |
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- description: write buffer area |
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reg-names: |
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items: |
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- const: regs |
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- const: dirmap |
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- const: wbuf |
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clocks: true |
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interrupts: |
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maxItems: 1 |
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power-domains: |
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maxItems: 1 |
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resets: |
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maxItems: 1 |
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patternProperties: |
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"flash@[0-9a-f]+$": |
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type: object |
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properties: |
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compatible: |
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contains: |
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enum: |
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- cfi-flash |
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- jedec,spi-nor |
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required: |
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- compatible |
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- reg |
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- reg-names |
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- clocks |
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- power-domains |
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- resets |
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- '#address-cells' |
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- '#size-cells' |
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if: |
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properties: |
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compatible: |
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contains: |
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enum: |
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- renesas,rzg2l-rpc-if |
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then: |
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properties: |
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clocks: |
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items: |
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- description: SPI Multi IO Register access clock (SPI_CLK2) |
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- description: SPI Multi IO Main clock (SPI_CLK). |
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else: |
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properties: |
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clocks: |
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maxItems: 1 |
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unevaluatedProperties: false |
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examples: |
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- | |
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#include <dt-bindings/clock/renesas-cpg-mssr.h> |
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#include <dt-bindings/power/r8a77995-sysc.h> |
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spi@ee200000 { |
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compatible = "renesas,r8a77995-rpc-if", "renesas,rcar-gen3-rpc-if"; |
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reg = <0xee200000 0x200>, |
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<0x08000000 0x4000000>, |
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<0xee208000 0x100>; |
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reg-names = "regs", "dirmap", "wbuf"; |
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clocks = <&cpg CPG_MOD 917>; |
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power-domains = <&sysc R8A77995_PD_ALWAYS_ON>; |
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resets = <&cpg 917>; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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flash@0 { |
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compatible = "jedec,spi-nor"; |
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reg = <0>; |
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spi-max-frequency = <40000000>; |
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spi-tx-bus-width = <1>; |
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spi-rx-bus-width = <1>; |
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}; |
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};
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