cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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cypress,cy8ctma340.yaml (4385B)


      1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
      2%YAML 1.2
      3---
      4$id: http://devicetree.org/schemas/input/touchscreen/cypress,cy8ctma340.yaml#
      5$schema: http://devicetree.org/meta-schemas/core.yaml#
      6
      7title: Cypress CY8CTMA340 series touchscreen controller bindings
      8
      9description: The Cypress CY8CTMA340 series (also known as "CYTTSP" after
     10  the marketing name Cypress TrueTouch Standard Product) touchscreens can
     11  be connected to either I2C or SPI buses.
     12
     13maintainers:
     14  - Javier Martinez Canillas <javier@dowhile0.org>
     15  - Linus Walleij <linus.walleij@linaro.org>
     16
     17allOf:
     18  - $ref: touchscreen.yaml#
     19
     20properties:
     21  $nodename:
     22    pattern: "^touchscreen(@.*)?$"
     23
     24  compatible:
     25    oneOf:
     26      - const: cypress,cy8ctma340
     27      - const: cypress,cy8ctst341
     28      - const: cypress,cyttsp-spi
     29        description: Legacy compatible for SPI connected CY8CTMA340
     30        deprecated: true
     31      - const: cypress,cyttsp-i2c
     32        description: Legacy compatible for I2C connected CY8CTMA340
     33        deprecated: true
     34
     35  reg:
     36    description: I2C address when used on the I2C bus, or the SPI chip
     37      select index when used on the SPI bus
     38
     39  clock-frequency:
     40    description: I2C client clock frequency, defined for host when using
     41      the device on the I2C bus
     42    minimum: 0
     43    maximum: 400000
     44
     45  spi-max-frequency:
     46    description: SPI clock frequency, defined for host, defined when using
     47      the device on the SPI bus. The throughput is maximum 2 Mbps so the
     48      typical value is 2000000, if higher rates are used the total throughput
     49      needs to be restricted to 2 Mbps.
     50    minimum: 0
     51    maximum: 6000000
     52
     53  interrupts:
     54    description: Interrupt to host
     55    maxItems: 1
     56
     57  vcpin-supply:
     58    description: Analog power supply regulator on VCPIN pin
     59
     60  vdd-supply:
     61    description: Digital power supply regulator on VDD pin
     62
     63  reset-gpios:
     64    description: Reset line for the touchscreen, should be tagged
     65      as GPIO_ACTIVE_LOW
     66
     67  bootloader-key:
     68    description: the 8-byte bootloader key that is required to switch
     69      the chip from bootloader mode (default mode) to application mode
     70    $ref: /schemas/types.yaml#/definitions/uint8-array
     71    minItems: 8
     72    maxItems: 8
     73
     74  touchscreen-size-x: true
     75  touchscreen-size-y: true
     76  touchscreen-fuzz-x: true
     77  touchscreen-fuzz-y: true
     78
     79  active-distance:
     80    description: the distance in pixels beyond which a touch must move
     81      before movement is detected and reported by the device
     82    $ref: /schemas/types.yaml#/definitions/uint32
     83    minimum: 0
     84    maximum: 15
     85
     86  active-interval-ms:
     87    description: the minimum period in ms between consecutive
     88      scanning/processing cycles when the chip is in active mode
     89    minimum: 0
     90    maximum: 255
     91
     92  lowpower-interval-ms:
     93    description: the minimum period in ms between consecutive
     94      scanning/processing cycles when the chip is in low-power mode
     95    minimum: 0
     96    maximum: 2550
     97
     98  touch-timeout-ms:
     99    description: minimum time in ms spent in the active power state while no
    100      touches are detected before entering low-power mode
    101    minimum: 0
    102    maximum: 2550
    103
    104  use-handshake:
    105    description: enable register-based handshake (boolean). This should only
    106      be used if the chip is configured to use 'blocking communication with
    107      timeout' (in this case the device generates an interrupt at the end of
    108      every scanning/processing cycle)
    109    $ref: /schemas/types.yaml#/definitions/flag
    110
    111additionalProperties: false
    112
    113required:
    114  - compatible
    115  - reg
    116  - interrupts
    117  - bootloader-key
    118  - touchscreen-size-x
    119  - touchscreen-size-y
    120
    121examples:
    122  - |
    123    #include <dt-bindings/interrupt-controller/irq.h>
    124    #include <dt-bindings/gpio/gpio.h>
    125    spi {
    126      #address-cells = <1>;
    127      #size-cells = <0>;
    128      num-cs = <1>;
    129      cs-gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
    130
    131      touchscreen@0 {
    132        compatible = "cypress,cy8ctma340";
    133        reg = <0>;
    134        interrupt-parent = <&gpio>;
    135        interrupts = <20 IRQ_TYPE_EDGE_FALLING>;
    136        reset-gpios = <&gpio 21 GPIO_ACTIVE_LOW>;
    137        vdd-supply = <&ldo_aux1_reg>;
    138        vcpin-supply = <&ldo_aux2_reg>;
    139        bootloader-key = /bits/ 8 <0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07>;
    140        touchscreen-size-x = <480>;
    141        touchscreen-size-y = <800>;
    142        active-interval-ms = <0>;
    143        touch-timeout-ms = <255>;
    144        lowpower-interval-ms = <10>;
    145      };
    146    };
    147
    148...