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[PATCHv4,13/24] drm/bridge: tc358767: remove unnecessary msleep

Message ID 20190528082747.3631-14-tomi.valkeinen@ti.com (mailing list archive)
State New, archived
Headers show
Series drm/bridge: tc358767: DP support | expand

Commit Message

Tomi Valkeinen May 28, 2019, 8:27 a.m. UTC 
For some reason the driver has a msleep(100) after writing to
DP_PHY_CTRL. Toshiba's documentation doesn't suggest any delay is
needed, and I have not seen any issues with the sleep removed.

Drop it, as msleep(100) is a rather big one.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
---
 drivers/gpu/drm/bridge/tc358767.c | 1 -
 1 file changed, 1 deletion(-)
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Patch

diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index ccf4c8cfbb52..a60a2e65e468 100644
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -874,7 +874,6 @@  static int tc_main_link_enable(struct tc_data *tc)
 	if (tc->link.base.num_lanes == 2)
 		dp_phy_ctrl |= PHY_2LANE;
 	tc_write(DP_PHY_CTRL, dp_phy_ctrl);
-	msleep(100);
 
 	/* PLL setup */
 	tc_write(DP0_PLLCTRL, PLLUPDATE | PLLEN);