[PATCH 1/2] drm: bridge: tc358767: increase PLL lock time delay

[Lucas Stach]

From: David Jander <david at protonic.nl>

The PLL often fails to lock with this delay. The new value was
determined by trial and error increasing the delay bit by bit
until the error did not occurr anymore even after several tries.
Then double that value was taken as the minimum delay to be safe.

Signed-off-by: David Jander <david at protonic.nl>
Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
---
 drivers/gpu/drm/bridge/tc358767.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index 91f7cb56a654..46916ae30f8f 100644
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -501,7 +501,7 @@ static int tc_pllupdate(struct tc_data *tc, unsigned int pllctrl)
 		return ret;
 
 	/* Wait for PLL to lock: up to 2.09 ms, depending on refclk */
-	usleep_range(3000, 6000);
+	usleep_range(15000, 20000);
 
 	return 0;
 }
-- 
2.39.2