Properties defining maximum values for LED currents and timeout should be mandatory to avoid the risk of hardware damage. This patch fixes the issue.
Signed-off-by: Jacek Anaszewski <[email protected]> Acked-by: Kyungmin Park <[email protected]> Cc: Bryan Wu <[email protected]> Cc: Richard Purdie <[email protected]> Cc: Pavel Machek <[email protected]> Cc: Sakari Ailus <[email protected]> Cc: Sylwester Nawrocki <[email protected]> Cc: [email protected] --- Documentation/devicetree/bindings/leds/common.txt | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt index 747c538..e478ac6 100644 --- a/Documentation/devicetree/bindings/leds/common.txt +++ b/Documentation/devicetree/bindings/leds/common.txt @@ -10,6 +10,17 @@ 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. +Required properties for child nodes: +- led-max-microamp : Maximum LED supply current in microamperes + (torch LED for flash devices). Controllers that have no + configurable current can omit this property. +- flash-max-microamp : Maximum flash LED supply current in microamperes. +- flash-timeout-us : Timeout in microseconds after which the flash + LED is turned off. + +Above properties determine a LED driver IC settings required for safe +operation. They should be also used as the initial settings for the IC. + 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 @@ -29,14 +40,6 @@ Optional properties for child nodes: "ide-disk" - LED indicates disk activity "timer" - LED flashes at a fixed, configurable rate -- max-microamp : maximum intensity in microamperes of the LED - (torch LED for flash devices) -- flash-max-microamp : maximum intensity in microamperes of the - flash LED; it is mandatory if the LED should - support the flash mode -- flash-timeout-us : timeout in microseconds after which the flash - LED is turned off - Examples: -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-leds" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
