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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-lgm.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Intel Lightning Mountain (LGM) SoC LED Serial Shift Output (SSO) Controller driver
maintainers:
- Zhu, Yi Xin <Yixin.zhu@intel.com>
- Amireddy Mallikarjuna reddy <mallikarjunax.reddy@intel.com>
properties:
compatible:
const: intel,lgm-ssoled
gpio-controller: true
'#gpio-cells':
const: 2
ngpios:
minimum: 0
maximum: 32
description:
Number of GPIOs this controller provides.
intel,sso-update-rate-hz:
description:
Blink frequency for SOUTs in Hz.
led-controller:
type: object
description:
This sub-node must contain a sub-node for each leds.
additionalProperties: false
patternProperties:
"^led@[0-23]$":
type: object
properties:
reg:
description: Index of the LED.
minimum: 0
maximum: 2
intel,sso-hw-trigger:
type: boolean
description: This property indicates Hardware driven/control LED.
intel,sso-hw-blink:
type: boolean
description: This property indicates Enable LED blink by Hardware.
intel,sso-blink-rate-hz:
description: LED HW blink frequency.
retain-state-suspended:
type: boolean
description: The suspend state of LED can be retained.
retain-state-shutdown:
type: boolean
description: Retain the state of the LED on shutdown.
required:
- compatible
- reg
- clocks
- clock-names
- "#gpio-cells"
- gpio-controller
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/intel,lgm-clk.h>
#include <dt-bindings/leds/common.h>
ssogpio: ssogpio@e0d40000 {
compatible = "intel,sso-led";
reg = <0xE0D40000 0x2E4>;
gpio-controller;
#gpio-cells = <2>;
ngpios = <32>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ledc>;
clocks = <&cgu0 LGM_GCLK_LEDC0>, <&afeclk>;
clock-names = "sso", "fpid";
intel,sso-update-rate-hz = <250000>;
led-controller {
#address-cells = <1>;
#size-cells = <0>;
led@0 {
reg = <0>;
function = "gphy";
color = <LED_COLOR_ID_GREEN>;
led-gpio = <&ssogpio 0 0>;
};
led@23 {
reg = <23>;
function = LED_FUNCTION_POWER;
color = <LED_COLOR_ID_GREEN>;
led-gpio = <&ssogpio 23 0>;
};
};
};
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