mediatek,spi-mtk-snfi.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-snfi.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: SPI-NAND flash controller for MediaTek ARM SoCs
    8 
    9 maintainers:
   10   - Chuanhong Guo <gch981213@gmail.com>
   11 
   12 description: |
   13   The Mediatek SPI-NAND flash controller is an extended version of
   14   the Mediatek NAND flash controller. It can perform standard SPI
   15   instructions with one continuous write and one read for up-to 0xa0
   16   bytes. It also supports typical SPI-NAND page cache operations
   17   in single, dual or quad IO mode with pipelined ECC encoding/decoding
   18   using the accompanying ECC engine. There should be only one spi
   19   slave device following generic spi bindings.
   20 
   21 allOf:
   22   - $ref: /schemas/spi/spi-controller.yaml#
   23 
   24 properties:
   25   compatible:
   26     enum:
   27       - mediatek,mt7622-snand
   28       - mediatek,mt7629-snand
   29 
   30   reg:
   31     items:
   32       - description: core registers
   33 
   34   interrupts:
   35     items:
   36       - description: NFI interrupt
   37 
   38   clocks:
   39     items:
   40       - description: clock used for the controller
   41       - description: clock used for the SPI bus
   42 
   43   clock-names:
   44     items:
   45       - const: nfi_clk
   46       - const: pad_clk
   47 
   48   nand-ecc-engine:
   49     description: device-tree node of the accompanying ECC engine.
   50     $ref: /schemas/types.yaml#/definitions/phandle
   51 
   52 required:
   53   - compatible
   54   - reg
   55   - interrupts
   56   - clocks
   57   - clock-names
   58   - nand-ecc-engine
   59 
   60 unevaluatedProperties: false
   61 
   62 examples:
   63   - |
   64     #include <dt-bindings/interrupt-controller/irq.h>
   65     #include <dt-bindings/interrupt-controller/arm-gic.h>
   66     #include <dt-bindings/clock/mt7622-clk.h>
   67     soc {
   68       #address-cells = <2>;
   69       #size-cells = <2>;
   70       snfi: spi@1100d000 {
   71         compatible = "mediatek,mt7622-snand";
   72         reg = <0 0x1100d000 0 0x1000>;
   73         interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_LOW>;
   74         clocks = <&pericfg CLK_PERI_NFI_PD>, <&pericfg CLK_PERI_SNFI_PD>;
   75         clock-names = "nfi_clk", "pad_clk";
   76         nand-ecc-engine = <&bch>;
   77         #address-cells = <1>;
   78         #size-cells = <0>;
   79 
   80         flash@0 {
   81           compatible = "spi-nand";
   82           reg = <0>;
   83           spi-tx-bus-width = <4>;
   84           spi-rx-bus-width = <4>;
   85           nand-ecc-engine = <&snfi>;
   86         };
   87       };
   88     };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/spi/mediatek,spi-mtk-snfi.yaml

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sys/contrib/device-tree/Bindings/spi/mediatek,spi-mtk-snfi.yaml