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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/spi/mediatek,spi-mtk-nor.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Serial NOR flash controller for MediaTek ARM SoCs8 9maintainers:10 - Bayi Cheng <bayi.cheng@mediatek.com>11 - Chuanhong Guo <gch981213@gmail.com>12 13description: |14 This spi controller support single, dual, or quad mode transfer for15 SPI NOR flash. There should be only one spi slave device following16 generic spi bindings. It's not recommended to use this controller17 for devices other than SPI NOR flash due to limited transfer18 capability of this controller.19 20allOf:21 - $ref: /schemas/spi/spi-controller.yaml#22 23properties:24 compatible:25 oneOf:26 - enum:27 - mediatek,mt8173-nor28 - mediatek,mt8186-nor29 - mediatek,mt8192-nor30 - items:31 - enum:32 - mediatek,mt2701-nor33 - mediatek,mt2712-nor34 - mediatek,mt7622-nor35 - mediatek,mt7623-nor36 - mediatek,mt7629-nor37 - mediatek,mt8195-nor38 - const: mediatek,mt8173-nor39 - items:40 - enum:41 - mediatek,mt8188-nor42 - const: mediatek,mt8186-nor43 44 reg:45 maxItems: 146 47 interrupts:48 maxItems: 149 50 clocks:51 minItems: 252 items:53 - description: clock used for spi bus54 - description: clock used for controller55 - description: clock used for nor dma bus. this depends on hardware56 design, so this is optional.57 - description: clock used for controller axi slave bus.58 this depends on hardware design, so it is optional.59 60 clock-names:61 minItems: 262 items:63 - const: spi64 - const: sf65 - const: axi66 - const: axi_s67 68required:69 - compatible70 - reg71 - clocks72 - clock-names73 74unevaluatedProperties: false75 76examples:77 - |78 #include <dt-bindings/clock/mt8173-clk.h>79 80 soc {81 #address-cells = <2>;82 #size-cells = <2>;83 84 nor_flash: spi@1100d000 {85 compatible = "mediatek,mt8173-nor";86 reg = <0 0x1100d000 0 0xe0>;87 interrupts = <1>;88 clocks = <&pericfg CLK_PERI_SPI>, <&topckgen CLK_TOP_SPINFI_IFR_SEL>,89 <&pericfg CLK_PERI_NFI>;90 clock-names = "spi", "sf", "axi";91 #address-cells = <1>;92 #size-cells = <0>;93 94 flash@0 {95 compatible = "jedec,spi-nor";96 reg = <0>;97 };98 };99 };100