# 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>; clock-names = "spi", "sf"; #address-cells = <1>; #size-cells = <0>; flash@0 { compatible = "jedec,spi-nor"; reg = <0>; }; }; };