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 7title: Netronix Embedded Controller 8 9maintainers: 10 - Jonathan Neuschäfer <j.neuschaefer@gmx.net> 11 12description: | 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 16properties: 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 41required: 42 - compatible 43 - reg 44 45additionalProperties: false 46 47examples: 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 }; 77