From c5d18dd6b64e09dd6984bda9bdd55160af537a8c Mon Sep 17 00:00:00 2001 From: Jacek Anaszewski Date: Sun, 9 Jun 2019 20:19:04 +0200 Subject: [PATCH] dt-bindings: leds: Add properties for LED name construction Introduce dedicated properties for conveying information about LED function and color. Mark old "label" property as deprecated. Additionally function-enumerator property is being provided for the cases when neither function nor color can be used for LED differentiation. Signed-off-by: Jacek Anaszewski Cc: Baolin Wang Cc: Pavel Machek Cc: Dan Murphy Cc: Daniel Mack Cc: Linus Walleij Cc: Oleh Kravchenko Cc: Sakari Ailus Cc: Simon Shields Reviewed-by: Rob Herring --- .../devicetree/bindings/leds/common.txt | 62 ++++++++++++++++--- 1 file changed, 54 insertions(+), 8 deletions(-) diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt index 70876ac11367..9fa6f9795d50 100644 --- a/Documentation/devicetree/bindings/leds/common.txt +++ b/Documentation/devicetree/bindings/leds/common.txt @@ -10,14 +10,30 @@ can influence the way of the LED device initialization, the LED components have to be tightly coupled with the LED device binding. They are represented by child nodes of the parent LED device binding. + Optional properties for child nodes: - led-sources : List of device current outputs the LED is connected to. The outputs are identified by the numbers that must be defined in the LED device binding documentation. + +- function: LED functon. Use one of the LED_FUNCTION_* prefixed definitions + from the header include/dt-bindings/leds/common.h. + If there is no matching LED_FUNCTION available, add a new one. + +- color : Color of the LED. Use one of the LED_COLOR_ID_* prefixed definitions + from the header include/dt-bindings/leds/common.h. + If there is no matching LED_COLOR_ID available, add a new one. + +- function-enumerator: Integer to be used when more than one instance + of the same function is needed, differing only with + an ordinal number. + - label : The label for this LED. If omitted, the label is taken from the node name (excluding the unit address). It has to uniquely identify a device, i.e. no other LED class device can be assigned the same - label. + label. This property is deprecated - use 'function' and 'color' + properties instead. function-enumerator has no effect when this + property is present. - default-state : The initial state of the LED. Valid values are "on", "off", and "keep". If the LED is already on or off and the default-state property is @@ -99,29 +115,59 @@ Required properties for trigger source: * Examples -gpio-leds { +#include + +led-controller@0 { compatible = "gpio-leds"; - system-status { - label = "Status"; + led0 { + function = LED_FUNCTION_STATUS; linux,default-trigger = "heartbeat"; gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>; }; - usb { + led1 { + function = LED_FUNCTION_USB; gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>; trigger-sources = <&ohci_port1>, <&ehci_port1>; }; }; -max77693-led { +led-controller@0 { compatible = "maxim,max77693-led"; - camera-flash { - label = "Flash"; + led { + function = LED_FUNCTION_FLASH; + color = ; led-sources = <0>, <1>; led-max-microamp = <50000>; flash-max-microamp = <320000>; flash-max-timeout-us = <500000>; }; }; + +led-controller@30 { + compatible = "panasonic,an30259a"; + reg = <0x30>; + #address-cells = <1>; + #size-cells = <0>; + + led@1 { + reg = <1>; + linux,default-trigger = "heartbeat"; + function = LED_FUNCTION_INDICATOR; + function-enumerator = <1>; + }; + + led@2 { + reg = <2>; + function = LED_FUNCTION_INDICATOR; + function-enumerator = <2>; + }; + + led@3 { + reg = <3>; + function = LED_FUNCTION_INDICATOR; + function-enumerator = <3>; + }; +}; -- 2.30.2