164 lines
3.9 KiB
YAML
164 lines
3.9 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/leds/ti,lm3560.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: TI LM3560 Synchronous Boost Flash Driver
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maintainers:
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- Svyatoslav Ryhel <clamor95@gmail.com>
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description:
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The LM3560 is a 2-MHz fixed frequency synchronous boost converter with two
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1000-mA constant current drivers for high-current white LEDs. The dual high-
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side current sources allow for grounded cathode LED operation and can be
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tied together for providing flash currents at up to 2 A through a single LED.
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An adaptive regulation method ensures the current for each LED remains in
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regulation and maximizes efficiency.
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properties:
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compatible:
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enum:
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- ti,lm3559
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- ti,lm3560
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reg:
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maxItems: 1
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'#address-cells':
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const: 1
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'#size-cells':
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const: 0
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enable-gpios:
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description: GPIO connected to the HWEN pin.
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maxItems: 1
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vin-supply:
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description: Supply connected to the IN line.
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flash-max-timeout-us:
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minimum: 32000
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maximum: 1024000
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default: 32000
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ti,peak-current-microamp:
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description:
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The LM3560 features 4 selectable current limits 1.6A, 2.3A, 3A, and 3.6A
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(in case of LM3559 - 1.4A, 2.1A, 2.7A, and 3.2A). When the current limit
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is reached, the LM3559/LM3560 stops switching for the remainder of the
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switching cycle.
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patternProperties:
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'^led@[01]$':
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type: object
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$ref: /schemas/leds/common.yaml#
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description: LED control bank nodes.
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unevaluatedProperties: false
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properties:
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reg:
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description: Control bank selection (0 = bank A, 1 = bank B).
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maximum: 1
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required:
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- reg
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- flash-max-microamp
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- led-max-microamp
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allOf:
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- $ref: /schemas/leds/common.yaml#
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- if:
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properties:
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compatible:
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contains:
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const: ti,lm3559
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then:
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properties:
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ti,peak-current-microamp:
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enum: [1400000, 2100000, 2700000, 3200000]
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default: 1400000
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patternProperties:
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'^led@[01]$':
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properties:
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flash-max-microamp:
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minimum: 56250
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maximum: 900000
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led-max-microamp:
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minimum: 28125
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maximum: 225000
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- if:
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properties:
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compatible:
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contains:
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const: ti,lm3560
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then:
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properties:
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ti,peak-current-microamp:
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enum: [1600000, 2300000, 3000000, 3600000]
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default: 1600000
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patternProperties:
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'^led@[01]$':
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properties:
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flash-max-microamp:
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minimum: 62500
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maximum: 1000000
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led-max-microamp:
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minimum: 31250
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maximum: 250000
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required:
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- compatible
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- reg
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- '#address-cells'
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- '#size-cells'
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/leds/common.h>
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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led-controller@53 {
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compatible = "ti,lm3560";
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reg = <0x53>;
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enable-gpios = <&gpio 28 GPIO_ACTIVE_HIGH>;
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vin-supply = <&vdd_3v3_sys>;
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flash-max-timeout-us = <1024000>;
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ti,peak-current-microamp = <1600000>;
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#address-cells = <1>;
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#size-cells = <0>;
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led@0 {
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reg = <0>;
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function = LED_FUNCTION_FLASH;
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color = <LED_COLOR_ID_WHITE>;
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flash-max-microamp = <562500>;
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led-max-microamp = <156250>;
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};
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led@1 {
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reg = <1>;
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function = LED_FUNCTION_FLASH;
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color = <LED_COLOR_ID_YELLOW>;
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flash-max-microamp = <562500>;
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led-max-microamp = <156250>;
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};
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};
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};
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