From: Frieder Schrempf <frieder.schrempf@kontron.de>
Date: Tue, 22 Nov 2022 09:12:18 +0100
Subject: [PATCH] drm/bridge: ti-sn65dsi83: Fix delay after reset deassert to
match spec
References: bsc#1012628
Patch-mainline: 6.2.3
Git-commit: 4b03d5e0d3e86ee492d54254927d020dc0fe8acf
[ Upstream commit 4b03d5e0d3e86ee492d54254927d020dc0fe8acf ]
The datasheet specifies a delay of 10 milliseconds, but the current
driver only waits for 1 ms. Fix this to make sure the initialization
sequence meets the spec.
Fixes: ceb515ba29ba ("drm/bridge: ti-sn65dsi83: Add TI SN65DSI83 and SN65DSI84 driver")
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20221122081219.20143-1-frieder@fris.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
drivers/gpu/drm/bridge/ti-sn65dsi83.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi83.c b/drivers/gpu/drm/bridge/ti-sn65dsi83.c
index 7ba9467f..047c14dd 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi83.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi83.c
@@ -346,7 +346,7 @@ static void sn65dsi83_atomic_enable(struct drm_bridge *bridge,
/* Deassert reset */
gpiod_set_value_cansleep(ctx->enable_gpio, 1);
- usleep_range(1000, 1100);
+ usleep_range(10000, 11000);
/* Get the LVDS format from the bridge state. */
bridge_state = drm_atomic_get_new_bridge_state(state, bridge);
--
2.35.3