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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/spi/mediatek,spi-mtk-nor.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Serial NOR flash controller for MediaTek ARM SoCs
maintainers:
- Bayi Cheng <bayi.cheng@mediatek.com>
- Chuanhong Guo <gch981213@gmail.com>
description: |
This spi controller support single, dual, or quad mode transfer for
SPI NOR flash. There should be only one spi slave device following
generic spi bindings. It's not recommended to use this controller
for devices other than SPI NOR flash due to limited transfer
capability of this controller.
allOf:
- $ref: /schemas/spi/spi-controller.yaml#
properties:
compatible:
oneOf:
- enum:
- mediatek,mt8173-nor
- mediatek,mt8186-nor
- mediatek,mt8192-nor
- items:
- enum:
- mediatek,mt2701-nor
- mediatek,mt2712-nor
- mediatek,mt7622-nor
- mediatek,mt7623-nor
- mediatek,mt7629-nor
- mediatek,mt8195-nor
- const: mediatek,mt8173-nor
- items:
- enum:
- mediatek,mt8188-nor
- const: mediatek,mt8186-nor
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
minItems: 2
items:
- description: clock used for spi bus
- description: clock used for controller
- description: clock used for nor dma bus. this depends on hardware
design, so this is optional.
- description: clock used for controller axi slave bus.
this depends on hardware design, so it is optional.
clock-names:
minItems: 2
items:
- const: spi
- const: sf
- const: axi
- const: axi_s
required:
- compatible
- reg
- clocks
- clock-names
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/clock/mt8173-clk.h>
soc {
#address-cells = <2>;
#size-cells = <2>;
nor_flash: spi@1100d000 {
compatible = "mediatek,mt8173-nor";
reg = <0 0x1100d000 0 0xe0>;
interrupts = <1>;
clocks = <&pericfg CLK_PERI_SPI>, <&topckgen CLK_TOP_SPINFI_IFR_SEL>,
<&pericfg CLK_PERI_NFI>;
clock-names = "spi", "sf", "axi";
#address-cells = <1>;
#size-cells = <0>;
flash@0 {
compatible = "jedec,spi-nor";
reg = <0>;
};
};
};
|
