6f18ce8026
Add snapshot of device tree bindings from keystone common kernel, branch
"android-mainline-keystone-qcom-release" at c4c12103f9c0 ("Snap for 9228065
from e32903b9a63bb558df8b803b076619c53c16baad to
android-mainline-keystone-qcom-release").
Change-Id: I7682079615cbd9f29340a5c1f2a1d84ec441a1f1
Signed-off-by: Melody Olvera <quic_molvera@quicinc.com>
112 lines
3.5 KiB
YAML
112 lines
3.5 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/leds/richtek,rt8515.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: Richtek RT8515 1.5A dual channel LED driver
|
|
|
|
maintainers:
|
|
- Linus Walleij <linus.walleij@linaro.org>
|
|
|
|
description: |
|
|
The Richtek RT8515 is a dual channel (two mode) LED driver that
|
|
supports driving a white LED in flash or torch mode. The maximum
|
|
current for each mode is defined in hardware using two resistors
|
|
RFS and RTS.
|
|
|
|
properties:
|
|
compatible:
|
|
const: richtek,rt8515
|
|
|
|
enf-gpios:
|
|
maxItems: 1
|
|
description: A connection to the 'ENF' (enable flash) pin.
|
|
|
|
ent-gpios:
|
|
maxItems: 1
|
|
description: A connection to the 'ENT' (enable torch) pin.
|
|
|
|
richtek,rfs-ohms:
|
|
minimum: 7680
|
|
maximum: 367000
|
|
description: The resistance value of the RFS resistor. This
|
|
resistors limits the maximum flash current. This must be set
|
|
for the property flash-max-microamp to work, the RFS resistor
|
|
defines the range of the dimmer setting (brightness) of the
|
|
flash LED.
|
|
|
|
richtek,rts-ohms:
|
|
minimum: 7680
|
|
maximum: 367000
|
|
description: The resistance value of the RTS resistor. This
|
|
resistors limits the maximum torch current. This must be set
|
|
for the property torch-max-microamp to work, the RTS resistor
|
|
defines the range of the dimmer setting (brightness) of the
|
|
torch LED.
|
|
|
|
led:
|
|
type: object
|
|
$ref: common.yaml#
|
|
properties:
|
|
function: true
|
|
color: true
|
|
flash-max-timeout-us: true
|
|
|
|
flash-max-microamp:
|
|
maximum: 700000
|
|
description: The maximum current for flash mode
|
|
is hardwired to the component using the RFS resistor to
|
|
ground. The maximum hardware current setting is calculated
|
|
according to the formula Imax = 5500 / RFS. The lowest
|
|
allowed resistance value is 7.86 kOhm giving an absolute
|
|
maximum current of 700mA. By setting this attribute in
|
|
the device tree, you can further restrict the maximum
|
|
current below the hardware limit. This requires the RFS
|
|
to be defined as it defines the maximum range.
|
|
|
|
led-max-microamp:
|
|
maximum: 700000
|
|
description: The maximum current for torch mode
|
|
is hardwired to the component using the RTS resistor to
|
|
ground. The maximum hardware current setting is calculated
|
|
according to the formula Imax = 5500 / RTS. The lowest
|
|
allowed resistance value is 7.86 kOhm giving an absolute
|
|
maximum current of 700mA. By setting this attribute in
|
|
the device tree, you can further restrict the maximum
|
|
current below the hardware limit. This requires the RTS
|
|
to be defined as it defines the maximum range.
|
|
|
|
additionalProperties: false
|
|
|
|
required:
|
|
- compatible
|
|
- ent-gpios
|
|
- enf-gpios
|
|
- led
|
|
|
|
additionalProperties: false
|
|
|
|
examples:
|
|
- |
|
|
#include <dt-bindings/gpio/gpio.h>
|
|
#include <dt-bindings/leds/common.h>
|
|
|
|
led-controller {
|
|
compatible = "richtek,rt8515";
|
|
enf-gpios = <&gpio4 12 GPIO_ACTIVE_HIGH>;
|
|
ent-gpios = <&gpio4 13 GPIO_ACTIVE_HIGH>;
|
|
richtek,rfs-ohms = <16000>;
|
|
richtek,rts-ohms = <100000>;
|
|
|
|
led {
|
|
function = LED_FUNCTION_FLASH;
|
|
color = <LED_COLOR_ID_WHITE>;
|
|
flash-max-timeout-us = <250000>;
|
|
flash-max-microamp = <150000>;
|
|
led-max-microamp = <25000>;
|
|
};
|
|
};
|
|
|
|
...
|