On 6 April 2016 at 12:12, Rob Herring <robh@xxxxxxxxxx> wrote: > On Mon, Apr 4, 2016 at 3:22 PM, Ezequiel Garcia > <ezequiel@xxxxxxxxxxxxxxxxxxxx> wrote: >> It's desirable to specify which LEDs are to be blinked on a kernel >> panic. Therefore, introduce a devicetree boolean property to mark >> which LEDs should be treated this way. >> >> Signed-off-by: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxxxxxxxxx> >> --- >> Documentation/devicetree/bindings/leds/common.txt | 2 ++ >> 1 file changed, 2 insertions(+) >> >> diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt >> index 68419843e32f..dd409df9203a 100644 >> --- a/Documentation/devicetree/bindings/leds/common.txt >> +++ b/Documentation/devicetree/bindings/leds/common.txt >> @@ -37,6 +37,8 @@ Optional properties for child nodes: >> property is mandatory for the LEDs in the non-flash modes >> (e.g. torch or indicator). >> >> +- panic-blink : Mark this LED to be used by the panic LED trigger. >> + > > We already have a way to specify LED triggers. Why can't that be used? > Because this is not about specifying a LED trigger. The use case is the following: a LED is assigned to some LED trigger. When the kernel panics, we want to switch that LED to the panic trigger, so it blinks signalling the panic. IOW, this allows a LED to be used for "normal operation stuff trigger", but blink if the kernel panics. -- Ezequiel García, VanguardiaSur www.vanguardiasur.com.ar -- To unsubscribe from this list: send the line "unsubscribe linux-leds" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
