Marsboard A10 have four red LEDs, the first one can be used for heartbeat 
indication.

Signed-off-by: Aleksei Mamlin <mamli...@gmail.com>
---
 arch/arm/boot/dts/sun4i-a10-marsboard.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/sun4i-a10-marsboard.dts 
b/arch/arm/boot/dts/sun4i-a10-marsboard.dts
index 8e50723..ff73ee1 100644
--- a/arch/arm/boot/dts/sun4i-a10-marsboard.dts
+++ b/arch/arm/boot/dts/sun4i-a10-marsboard.dts
@@ -68,6 +68,7 @@
                red1 {
                        label = "marsboard:red1:usr";
                        gpios = <&pio 1 5 GPIO_ACTIVE_HIGH>;
+                       linux,default-trigger = "heartbeat";
                };
 
                red2 {
-- 
2.4.10

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