On 09/15/2013 07:50 PM, Linus Walleij wrote:
This enables setting a default trigger on an LP55xx channel,
either from platform data or device tree. This mechanism is
identical to the mechanism for GPIO LEDs and references the
common LEDs device tree bindings.
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Acked-by: Milo Kim <milo.kim@xxxxxx>
---
Documentation/devicetree/bindings/leds/leds-lp55xx.txt | 10 +++++++---
drivers/leds/leds-lp55xx-common.c | 3 +++
include/linux/platform_data/leds-lp55xx.h | 1 +
3 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/leds/leds-lp55xx.txt b/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
index a61727f..d221e75 100644
--- a/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
+++ b/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
@@ -17,12 +17,15 @@ Optional properties:
2: D1~6 with VOUT, D7~9 with VDD
3: D1~9 are connected to VOUT
-Alternatively, each child can have specific channel name
-- chan-name: Name of each channel name
+Alternatively, each child can have a specific channel name and trigger:
+- chan-name (optional): name of channel
+- linux,default-trigger (optional): see
+ Documentation/devicetree/bindings/leds/common.txt
example 1) LP5521
3 LED channels, external clock used. Channel names are 'lp5521_pri:channel0',
-'lp5521_pri:channel1' and 'lp5521_pri:channel2'
+'lp5521_pri:channel1' and 'lp5521_pri:channel2', with a heartbeat trigger
+on channel 0.
lp5521@32 {
compatible = "national,lp5521";
@@ -33,6 +36,7 @@ lp5521@32 {
chan0 {
led-cur = /bits/ 8 <0x2f>;
max-cur = /bits/ 8 <0x5f>;
+ linux,default-trigger = "heartbeat";
};
And this DT example works well with 'ledtrig-heartbeat' module.
Tested-by: Milo Kim <milo.kim@xxxxxx>
Thanks.
Best regards,
Milo
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