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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pwm/atmel,hlcdc-pwm.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Atmel's HLCDC's PWM controller
maintainers:
- Nicolas Ferre <nicolas.ferre@microchip.com>
- Alexandre Belloni <alexandre.belloni@bootlin.com>
- Claudiu Beznea <claudiu.beznea@tuxon.dev>
description:
The LCDC integrates a Pulse Width Modulation (PWM) Controller. This block
generates the LCD contrast control signal (LCD_PWM) that controls the
display's contrast by software. LCDC_PWM is an 8-bit PWM signal that can be
converted to an analog voltage with a simple passive filter. LCD display
panels have different backlight specifications in terms of minimum/maximum
values for PWM frequency. If the LCDC PWM frequency range does not match the
LCD display panel, it is possible to use the standalone PWM Controller to
drive the backlight.
properties:
compatible:
const: atmel,hlcdc-pwm
"#pwm-cells":
const: 3
required:
- compatible
- "#pwm-cells"
additionalProperties: false
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