Dan,
On 3/11/19 1:26 PM, Dan Murphy wrote:
On 3/10/19 1:28 PM, Jacek Anaszewski wrote:
Introduce dedicated properties for conveying information about
LED function and color. Mark old "label" property as deprecated.
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@xxxxxxxxx>
Cc: Baolin Wang <baolin.wang@xxxxxxxxxx>
Cc: Daniel Mack <daniel@xxxxxxxxxx>
Cc: Dan Murphy <dmurphy@xxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
Cc: Oleh Kravchenko <oleg@xxxxxxxxxx>
Cc: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Cc: Simon Shields <simon@xxxxxxxxxxxxx>
---
Documentation/devicetree/bindings/leds/common.txt | 55 +++++++++++++++++++----
1 file changed, 47 insertions(+), 8 deletions(-)
diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt
index aa1399814a2a..3402b0e1cec9 100644
--- a/Documentation/devicetree/bindings/leds/common.txt
+++ b/Documentation/devicetree/bindings/leds/common.txt
@@ -10,14 +10,23 @@ 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_NAME_* prefixed definitions
+ from the header include/dt-bindings/leds/common.h.
+ If there is no matching LED_COLOR_NAME available, add a new one.
+
I am assuming multi color can re-use this property as well?
I intended it to be a string, but indeed it would be better if we will
make it an integer to be consistent with the discussed LED multi color
design.
- 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.
- 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
@@ -87,29 +96,59 @@ Required properties for trigger source:
* Examples
-gpio-leds {
+#include <dt-bindings/leds/common.h>
+
+led-controller@0 {
compatible = "gpio-leds";
- system-status {
- label = "Status";
+ led0 {
+ function = LED_FUNCTION_STATUS;
Missing color for example unless there is a reason to omit it for GPIO LEDs
It is on purpose - to show that it is an optional property for
monochrome LEDs.
Also missing reg here
Also on purpose. leds-gpio bindings don't require reg here.
And when reg is absent the unit address in the node name should
be omitted as Rob stated in one of recent reviews.
linux,default-trigger = "heartbeat";
gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
};
- usb {
+ led1 {
+ function = LED_FUNCTION_USB;
Same as above
Also missing reg here
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_COLOR_NAME_WHITE;
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;
+ color = LED_COLOR_NAME_RED;
+ };
+
+ led@2 {
+ reg = <2>;
+ function = LED_FUNCTION_INDICATOR;
+ color = LED_COLOR_NAME_GREEN;
+ };
+
+ led@3 {
+ reg = <3>;
+ function = LED_FUNCTION_INDICATOR;
+ color = LED_COLOR_NAME_BLUE;
+ };
+};
--
Best regards,
Jacek Anaszewski
