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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/spi/renesas,rspi.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Renesas (Quad) Serial Peripheral Interface (RSPI/QSPI)
maintainers:
- Geert Uytterhoeven <geert+renesas@glider.be>
properties:
compatible:
oneOf:
- items:
- enum:
- renesas,rspi-sh7757 # SH7757
- const: renesas,rspi # Legacy SH
- items:
- enum:
- renesas,rspi-r7s72100 # RZ/A1H
- renesas,rspi-r7s9210 # RZ/A2
- const: renesas,rspi-rz # RZ/A
- items:
- enum:
- renesas,qspi-r8a7743 # RZ/G1M
- renesas,qspi-r8a7744 # RZ/G1N
- renesas,qspi-r8a7745 # RZ/G1E
- renesas,qspi-r8a77470 # RZ/G1C
- renesas,qspi-r8a7790 # R-Car H2
- renesas,qspi-r8a7791 # R-Car M2-W
- renesas,qspi-r8a7792 # R-Car V2H
- renesas,qspi-r8a7793 # R-Car M2-N
- renesas,qspi-r8a7794 # R-Car E2
- const: renesas,qspi # R-Car Gen2 and RZ/G1
reg:
maxItems: 1
interrupts:
oneOf:
- items:
- description: A combined interrupt
- items:
- description: Error interrupt (SPEI)
- description: Receive Interrupt (SPRI)
- description: Transmit Interrupt (SPTI)
interrupt-names:
oneOf:
- items:
- const: mux
- items:
- const: error
- const: rx
- const: tx
clocks:
maxItems: 1
power-domains:
maxItems: 1
resets:
maxItems: 1
dmas:
description:
Must contain a list of pairs of references to DMA specifiers, one for
transmission, and one for reception.
dma-names:
minItems: 2
maxItems: 4
items:
enum:
- tx
- rx
num-cs:
description: |
Total number of native chip selects.
Hardware limitations related to chip selects:
- When using GPIO chip selects, at least one native chip select must
be left unused, as it will be driven anyway.
minimum: 1
maximum: 2
default: 1
required:
- compatible
- reg
- interrupts
- clocks
- power-domains
- '#address-cells'
- '#size-cells'
allOf:
- $ref: spi-controller.yaml#
- if:
properties:
compatible:
contains:
enum:
- renesas,rspi-rz
then:
properties:
interrupts:
minItems: 3
required:
- interrupt-names
- if:
properties:
compatible:
contains:
enum:
- renesas,qspi
then:
required:
- resets
examples:
- |
#include <dt-bindings/clock/r8a7791-cpg-mssr.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/power/r8a7791-sysc.h>
qspi: spi@e6b10000 {
compatible = "renesas,qspi-r8a7791", "renesas,qspi";
reg = <0xe6b10000 0x2c>;
interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 917>;
dmas = <&dmac0 0x17>, <&dmac0 0x18>, <&dmac1 0x17>, <&dmac1 0x18>;
dma-names = "tx", "rx", "tx", "rx";
power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
resets = <&cpg 917>;
num-cs = <1>;
#address-cells = <1>;
#size-cells = <0>;
};
|
