mediatek,spi-mtk-nor.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/spi/mediatek,spi-mtk-nor.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Serial NOR flash controller for MediaTek ARM SoCs
    8 
    9 maintainers:
   10   - Bayi Cheng <bayi.cheng@mediatek.com>
   11   - Chuanhong Guo <gch981213@gmail.com>
   12 
   13 description: |
   14   This spi controller support single, dual, or quad mode transfer for
   15   SPI NOR flash. There should be only one spi slave device following
   16   generic spi bindings. It's not recommended to use this controller
   17   for devices other than SPI NOR flash due to limited transfer
   18   capability of this controller.
   19 
   20 allOf:
   21   - $ref: /schemas/spi/spi-controller.yaml#
   22 
   23 properties:
   24   compatible:
   25     oneOf:
   26       - enum:
   27           - mediatek,mt8173-nor
   28           - mediatek,mt8186-nor
   29           - mediatek,mt8192-nor
   30       - items:
   31           - enum:
   32               - mediatek,mt2701-nor
   33               - mediatek,mt2712-nor
   34               - mediatek,mt7622-nor
   35               - mediatek,mt7623-nor
   36               - mediatek,mt7629-nor
   37               - mediatek,mt8195-nor
   38           - const: mediatek,mt8173-nor
   39       - items:
   40           - enum:
   41               - mediatek,mt8188-nor
   42           - const: mediatek,mt8186-nor
   43 
   44   reg:
   45     maxItems: 1
   46 
   47   interrupts:
   48     maxItems: 1
   49 
   50   clocks:
   51     minItems: 2
   52     items:
   53       - description: clock used for spi bus
   54       - description: clock used for controller
   55       - description: clock used for nor dma bus. this depends on hardware
   56                      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: 2
   62     items:
   63       - const: spi
   64       - const: sf
   65       - const: axi
   66       - const: axi_s
   67 
   68 required:
   69   - compatible
   70   - reg
   71   - clocks
   72   - clock-names
   73 
   74 unevaluatedProperties: false
   75 
   76 examples:
   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         clock-names = "spi", "sf";
   90         #address-cells = <1>;
   91         #size-cells = <0>;
   92 
   93         flash@0 {
   94           compatible = "jedec,spi-nor";
   95           reg = <0>;
   96         };
   97       };
   98     };

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sys/contrib/device-tree/Bindings/spi/mediatek,spi-mtk-nor.yaml