cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

at25.yaml (3714B)

      1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
      2%YAML 1.2
      3---
      4$id: "http://devicetree.org/schemas/eeprom/at25.yaml#"
      5$schema: "http://devicetree.org/meta-schemas/core.yaml#"
      6
      7title: SPI EEPROMs or FRAMs compatible with Atmel's AT25
      8
      9maintainers:
     10  - Christian Eggers <ceggers@arri.de>
     11
     12properties:
     13  $nodename:
     14    anyOf:
     15      - pattern: "^eeprom@[0-9a-f]{1,2}$"
     16      - pattern: "^fram@[0-9a-f]{1,2}$"
     17
     18  # There are multiple known vendors who manufacture EEPROM chips compatible
     19  # with Atmel's AT25. The compatible string requires two items where the
     20  # 'vendor' and 'model' parts of the first are the actual chip and the second
     21  # item is fixed to "atmel,at25". Some existing bindings only have the
     22  # "atmel,at25" part and should be fixed by somebody who knows vendor and
     23  # product.
     24  compatible:
     25    oneOf:
     26      - items:
     27          - enum:
     28              - anvo,anv32e61w
     29              - atmel,at25256B
     30              - fujitsu,mb85rs1mt
     31              - fujitsu,mb85rs64
     32              - microchip,at25160bn
     33              - microchip,25lc040
     34              - st,m95m02
     35              - st,m95256
     36              - cypress,fm25
     37
     38          - const: atmel,at25
     39
     40      # Please don't use this alternative for new bindings.
     41      - items:
     42          - const: atmel,at25
     43
     44  reg:
     45    maxItems: 1
     46
     47  spi-max-frequency: true
     48
     49  pagesize:
     50    $ref: /schemas/types.yaml#/definitions/uint32
     51    enum: [1, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072]
     52    description:
     53      Size of the eeprom page. FRAMs don't have pages.
     54
     55  size:
     56    $ref: /schemas/types.yaml#/definitions/uint32
     57    description:
     58      Total eeprom size in bytes.
     59
     60  address-width:
     61    $ref: /schemas/types.yaml#/definitions/uint32
     62    enum: [ 8, 9, 16, 24 ]
     63    description:
     64      Number of address bits.
     65      For 9 bits, the MSB of the address is sent as bit 3 of the instruction
     66      byte, before the address byte.
     67
     68  spi-cpha: true
     69
     70  spi-cpol: true
     71
     72  read-only:
     73    description:
     74      Disable writes to the eeprom.
     75    type: boolean
     76
     77  wp-gpios:
     78    maxItems: 1
     79    description:
     80      GPIO to which the write-protect pin of the chip is connected.
     81
     82  # Deprecated: at25,byte-len, at25,addr-mode, at25,page-size
     83  at25,byte-len:
     84    $ref: /schemas/types.yaml#/definitions/uint32
     85    description:
     86      Total eeprom size in bytes. Deprecated, use "size" property instead.
     87    deprecated: true
     88
     89  at25,addr-mode:
     90    $ref: /schemas/types.yaml#/definitions/uint32
     91    description:
     92      Addr-mode flags, as defined in include/linux/spi/eeprom.h.
     93      Deprecated, use "address-width" property instead.
     94    deprecated: true
     95
     96  at25,page-size:
     97    $ref: /schemas/types.yaml#/definitions/uint32
     98    description:
     99      Size of the eeprom page. Deprecated, use "pagesize" property instead.
    100    deprecated: true
    101
    102required:
    103  - compatible
    104  - reg
    105  - spi-max-frequency
    106
    107allOf:
    108  - if:
    109      properties:
    110        compatible:
    111          not:
    112            contains:
    113              const: cypress,fm25
    114    then:
    115      required:
    116        - pagesize
    117        - size
    118        - address-width
    119
    120additionalProperties: false
    121
    122examples:
    123  - |
    124    #include <dt-bindings/gpio/gpio.h>
    125    spi0 {
    126        #address-cells = <1>;
    127        #size-cells = <0>;
    128
    129        eeprom@0 {
    130            compatible = "st,m95256", "atmel,at25";
    131            reg = <0>;
    132            spi-max-frequency = <5000000>;
    133            spi-cpha;
    134            spi-cpol;
    135            wp-gpios = <&gpio1 3 0>;
    136
    137            pagesize = <64>;
    138            size = <32768>;
    139            address-width = <16>;
    140        };
    141
    142        fram@1 {
    143            compatible = "cypress,fm25", "atmel,at25";
    144            reg = <1>;
    145            spi-max-frequency = <40000000>;
    146        };
    147    };