| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/mfd/netronix,ntxec.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Netronix Embedded Controller |
| |
| maintainers: |
| - Jonathan Neuschäfer <j.neuschaefer@gmx.net> |
| |
| description: | |
| This EC is found in e-book readers of multiple brands (e.g. Kobo, Tolino), and |
| is typically implemented as a TI MSP430 microcontroller. |
| |
| properties: |
| compatible: |
| const: netronix,ntxec |
| |
| reg: |
| items: |
| - description: The I2C address of the EC |
| |
| system-power-controller: |
| type: boolean |
| description: See Documentation/devicetree/bindings/power/power-controller.txt |
| |
| interrupts: |
| minItems: 1 |
| description: |
| The EC can signal interrupts via a GPIO line |
| |
| "#pwm-cells": |
| const: 2 |
| description: | |
| Number of cells in a PWM specifier. |
| |
| The following PWM channels are supported: |
| - 0: The PWM channel controlled by registers 0xa1-0xa7 |
| |
| required: |
| - compatible |
| - reg |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/interrupt-controller/irq.h> |
| i2c { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| ec: embedded-controller@43 { |
| pinctrl-names = "default"; |
| pinctrl-0 = <&pinctrl_ntxec>; |
| |
| compatible = "netronix,ntxec"; |
| reg = <0x43>; |
| system-power-controller; |
| interrupt-parent = <&gpio4>; |
| interrupts = <11 IRQ_TYPE_EDGE_FALLING>; |
| #pwm-cells = <2>; |
| }; |
| }; |
| |
| backlight { |
| compatible = "pwm-backlight"; |
| pwms = <&ec 0 50000>; |
| power-supply = <&backlight_regulator>; |
| }; |
| |
| backlight_regulator: regulator-dummy { |
| compatible = "regulator-fixed"; |
| regulator-name = "backlight"; |
| }; |
