[U-Boot] [PATCH v3 4/4] samsung: misc: keys: fix gpio key bouncing by adding 50 ms delay

This change prevents gpio keys bouncing by adding 50 ms delay when key pressed condition met.

Signed-off-by: Przemyslaw Marczak p.marczak@samsung.com Cc: Minkyu Kang mk7.kang@samsung.com

--- Changes v2: - new commit

Changes v3: - correct commit message --- board/samsung/common/misc.c | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/board/samsung/common/misc.c b/board/samsung/common/misc.c index 65b5c30..5b43821 100644 --- a/board/samsung/common/misc.c +++ b/board/samsung/common/misc.c @@ -105,6 +105,10 @@ static int check_keys(void) if (key_pressed(KEY_VOLUMEDOWN)) keys += KEY_VOLUMEDOWN;

+ /* Avoids gpio keys debouncing */ + if (keys) + mdelay(50); + return keys; }