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charset="utf-8" The ssd132x family of chips require the result pulse to be at least 100us in length. Increase the reset time to meet this requirement. Signed-off-by: John Keeping --- drivers/gpu/drm/solomon/ssd130x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/solomon/ssd130x.c b/drivers/gpu/drm/solomon/ss= d130x.c index b777690fd6607..2622172228361 100644 --- a/drivers/gpu/drm/solomon/ssd130x.c +++ b/drivers/gpu/drm/solomon/ssd130x.c @@ -363,7 +363,7 @@ static void ssd130x_reset(struct ssd130x_device *ssd130= x) =20 /* Reset the screen */ gpiod_set_value_cansleep(ssd130x->reset, 1); - udelay(4); + usleep_range(100, 1000); gpiod_set_value_cansleep(ssd130x->reset, 0); udelay(4); } --=20 2.47.1