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| author | Mark A. Greer <mgreer@animalcreek.com> | 2013-07-25 10:16:41 -0700 |
|---|---|---|
| committer | Bryan Wu <cooloney@gmail.com> | 2013-08-26 17:22:10 -0700 |
| commit | 8465b01827b7a1e0e2464b0a300618bf7add25d8 (patch) | |
| tree | a06c6620291ab5a0a8e9eb7e5507e9d089ba7139 /Documentation/devicetree/bindings | |
| parent | 33b3a561f417ec3e1013999ce8bdb6c055abb1ce (diff) | |
| download | blackbird-obmc-linux-8465b01827b7a1e0e2464b0a300618bf7add25d8.tar.gz blackbird-obmc-linux-8465b01827b7a1e0e2464b0a300618bf7add25d8.zip | |
leds: pca9633: Add hardware blink support
Add hardware blinking support to the pca9633 driver.
NOTE: Hardware blinking violates the leds infrastructure
driver interface since the hardware only supports
blinking all LEDs with the same delay_on/delay_off
rates. That is, only the LEDs that are set to blink
will actually blink but all LEDs that are set to blink
will blink in identical fashion. The delay_on/delay_off
values of the last LED that is set to blink will be used
for all of the blinking LEDs. If the hardware doesn't
support the requested blinking pattern, a default of
500ms on and off will be used.
Hardware blinking is disabled by default but can be enabled
by setting the 'blink_type' member in the platform_data
struct to 'PCA9633_HW_BLINK' or by adding the 'nxp,hw-blink'
property to the DTS.
(fengguang.wu@intel.com: Removes unneeded semicolon.)
Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
Diffstat (limited to 'Documentation/devicetree/bindings')
| -rw-r--r-- | Documentation/devicetree/bindings/leds/pca9633.txt | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/leds/pca9633.txt b/Documentation/devicetree/bindings/leds/pca9633.txt index 8140512c0ac8..6d9e1a9e7e9f 100644 --- a/Documentation/devicetree/bindings/leds/pca9633.txt +++ b/Documentation/devicetree/bindings/leds/pca9633.txt @@ -5,6 +5,7 @@ Required properties: Optional properties: - nxp,totem-pole : use totem pole (push-pull) instead of default open-drain +- nxp,hw-blink : use hardware blinking instead of software blinking Each led is represented as a sub-node of the nxp,pca9633 device. |
