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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lm3630a-backlight.yaml (3555B)

      1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
      2%YAML 1.2
      3---
      4$id: http://devicetree.org/schemas/leds/backlight/lm3630a-backlight.yaml#
      5$schema: http://devicetree.org/meta-schemas/core.yaml#
      6
      7title: TI LM3630A High-Efficiency Dual-String White LED
      8
      9maintainers:
     10  - Lee Jones <lee.jones@linaro.org>
     11  - Daniel Thompson <daniel.thompson@linaro.org>
     12  - Jingoo Han <jingoohan1@gmail.com>
     13
     14description: |
     15  The LM3630A is a current-mode boost converter which supplies the power and
     16  controls the current in up to two strings of 10 LEDs per string.
     17  https://www.ti.com/product/LM3630A
     18
     19properties:
     20  compatible:
     21    const: ti,lm3630a
     22
     23  reg:
     24    maxItems: 1
     25
     26  '#address-cells':
     27    const: 1
     28
     29  '#size-cells':
     30    const: 0
     31
     32  enable-gpios:
     33    description: GPIO to use to enable/disable the backlight (HWEN pin).
     34    maxItems: 1
     35
     36required:
     37  - compatible
     38  - reg
     39  - '#address-cells'
     40  - '#size-cells'
     41
     42patternProperties:
     43  "^led@[01]$":
     44    type: object
     45    description: |
     46      Properties for a string of connected LEDs.
     47
     48    properties:
     49      reg:
     50        description: |
     51          The control bank that is used to program the two current sinks. The
     52          LM3630A has two control banks (A and B) and are represented as 0 or 1
     53          in this property. The two current sinks can be controlled
     54          independently with both banks, or bank A can be configured to control
     55          both sinks with the led-sources property.
     56        minimum: 0
     57        maximum: 1
     58
     59      label:
     60        maxItems: 1
     61
     62      led-sources:
     63        allOf:
     64          - minItems: 1
     65            maxItems: 2
     66            items:
     67              minimum: 0
     68              maximum: 1
     69
     70      default-brightness:
     71        description: Default brightness level on boot.
     72        minimum: 0
     73        maximum: 255
     74
     75      max-brightness:
     76        description: Maximum brightness that is allowed during runtime.
     77        minimum: 0
     78        maximum: 255
     79
     80      ti,linear-mapping-mode:
     81        description: |
     82          Enable linear mapping mode. If disabled, then it will use exponential
     83          mapping mode in which the ramp up/down appears to have a more uniform
     84          transition to the human eye.
     85        type: boolean
     86
     87    required:
     88      - reg
     89
     90    additionalProperties: false
     91
     92additionalProperties: false
     93
     94examples:
     95  - |
     96    #include <dt-bindings/gpio/gpio.h>
     97    i2c {
     98        #address-cells = <1>;
     99        #size-cells = <0>;
    100
    101        led-controller@38 {
    102                compatible = "ti,lm3630a";
    103                reg = <0x38>;
    104                enable-gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>;
    105
    106                #address-cells = <1>;
    107                #size-cells = <0>;
    108
    109                led@0 {
    110                        reg = <0>;
    111                        led-sources = <0 1>;
    112                        label = "lcd-backlight";
    113                        default-brightness = <200>;
    114                        max-brightness = <255>;
    115                };
    116        };
    117    };
    118  - |
    119    i2c {
    120        #address-cells = <1>;
    121        #size-cells = <0>;
    122
    123        led-controller@38 {
    124                compatible = "ti,lm3630a";
    125                reg = <0x38>;
    126
    127                #address-cells = <1>;
    128                #size-cells = <0>;
    129
    130                led@0 {
    131                        reg = <0>;
    132                        default-brightness = <150>;
    133                        ti,linear-mapping-mode;
    134                };
    135
    136                led@1 {
    137                        reg = <1>;
    138                        default-brightness = <225>;
    139                        ti,linear-mapping-mode;
    140                };
    141        };
    142    };