netronix,ntxec.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/mfd/netronix,ntxec.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Netronix Embedded Controller
    8 
    9 maintainers:
   10   - Jonathan Neuschäfer <j.neuschaefer@gmx.net>
   11 
   12 description: |
   13   This EC is found in e-book readers of multiple brands (e.g. Kobo, Tolino), and
   14   is typically implemented as a TI MSP430 microcontroller.
   15 
   16 properties:
   17   compatible:
   18     const: netronix,ntxec
   19 
   20   reg:
   21     items:
   22       - description: The I2C address of the EC
   23 
   24   system-power-controller:
   25     type: boolean
   26     description: See Documentation/devicetree/bindings/power/power-controller.txt
   27 
   28   interrupts:
   29     minItems: 1
   30     description:
   31       The EC can signal interrupts via a GPIO line
   32 
   33   "#pwm-cells":
   34     const: 2
   35     description: |
   36       Number of cells in a PWM specifier.
   37 
   38       The following PWM channels are supported:
   39         - 0: The PWM channel controlled by registers 0xa1-0xa7
   40 
   41 required:
   42   - compatible
   43   - reg
   44 
   45 additionalProperties: false
   46 
   47 examples:
   48   - |
   49     #include <dt-bindings/interrupt-controller/irq.h>
   50     i2c {
   51             #address-cells = <1>;
   52             #size-cells = <0>;
   53 
   54             ec: embedded-controller@43 {
   55                     pinctrl-names = "default";
   56                     pinctrl-0 = <&pinctrl_ntxec>;
   57 
   58                     compatible = "netronix,ntxec";
   59                     reg = <0x43>;
   60                     system-power-controller;
   61                     interrupt-parent = <&gpio4>;
   62                     interrupts = <11 IRQ_TYPE_EDGE_FALLING>;
   63                     #pwm-cells = <2>;
   64             };
   65     };
   66 
   67     backlight {
   68             compatible = "pwm-backlight";
   69             pwms = <&ec 0 50000>;
   70             power-supply = <&backlight_regulator>;
   71     };
   72 
   73     backlight_regulator: regulator-dummy {
   74             compatible = "regulator-fixed";
   75             regulator-name = "backlight";
   76     };

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sys/contrib/device-tree/Bindings/mfd/netronix,ntxec.yaml