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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/leds/leds-bcm63138.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Broadcom's BCM63138 LEDs controller
maintainers:
- Rafał Miłecki <rafal@milecki.pl>
description: |
This LEDs controller was first used on BCM63138 and later reused on BCM4908,
BCM6848, BCM6858, BCM63138, BCM63148, BCM63381 and BCM68360 SoCs.
It supports up to 32 LEDs that can be connected parallelly or serially. It
also includes limited support for hardware blinking.
Binding serially connected LEDs isn't documented yet.
properties:
compatible:
oneOf:
- items:
- enum:
- brcm,bcm4908-leds
- brcm,bcm6848-leds
- brcm,bcm6858-leds
- brcm,bcm63148-leds
- brcm,bcm63381-leds
- brcm,bcm68360-leds
- const: brcm,bcm63138-leds
- const: brcm,bcm63138-leds
reg:
maxItems: 1
"#address-cells":
const: 1
"#size-cells":
const: 0
brcm,serial-shift-bits:
minimum: 1
maximum: 32
description:
This describes the number of 8-bit serial shifters connected to the LED
controller block. The hardware is typically using 8-bit shift registers
with 8 LEDs per shift register, so 4 shifters results in 32 LEDs or 2
shifters give 16 LEDs etc, but the hardware supports any odd number of
registers. If left unspecified, the hardware boot-time default is used.
patternProperties:
"^led@[a-f0-9]+$":
type: object
$ref: common.yaml#
properties:
reg:
maxItems: 1
description: LED pin number
required:
- reg
unevaluatedProperties: false
required:
- reg
- "#address-cells"
- "#size-cells"
additionalProperties: false
examples:
- |
#include <dt-bindings/leds/common.h>
leds@ff800800 {
compatible = "brcm,bcm4908-leds", "brcm,bcm63138-leds";
reg = <0xff800800 0xdc>;
brcm,serial-shift-bits = <16>;
#address-cells = <1>;
#size-cells = <0>;
led@0 {
reg = <0x0>;
function = LED_FUNCTION_POWER;
color = <LED_COLOR_ID_GREEN>;
default-state = "on";
};
led@3 {
reg = <0x3>;
function = LED_FUNCTION_STATUS;
color = <LED_COLOR_ID_GREEN>;
active-low;
};
};
|
