From: Frieder Schrempf <frieder@fris.de>
To: Andrzej Hajda <andrzej.hajda@intel.com>,
Daniel Vetter <daniel@ffwll.ch>, David Airlie <airlied@gmail.com>,
dri-devel@lists.freedesktop.org,
Frieder Schrempf <frieder.schrempf@kontron.de>,
Linus Walleij <linus.walleij@linaro.org>,
linux-kernel@vger.kernel.org, Marek Vasut <marex@denx.de>,
Neil Armstrong <neil.armstrong@linaro.org>,
Robert Foss <robert.foss@linaro.org>
Cc: "Alexander Stein" <alexander.stein@ew.tq-group.com>,
"Christophe JAILLET" <christophe.jaillet@wanadoo.fr>,
"Jernej Skrabec" <jernej.skrabec@gmail.com>,
"Jonas Karlman" <jonas@kwiboo.se>,
"José Expósito" <jose.exposito89@gmail.com>,
"Laurent Pinchart" <Laurent.pinchart@ideasonboard.com>,
"Sam Ravnborg" <sam@ravnborg.org>,
"Ville Syrjälä" <ville.syrjala@linux.intel.com>
Subject: [PATCH] drm/bridge: ti-sn65dsi83: Fix delay after reset deassert to match spec
Date: Tue, 22 Nov 2022 09:12:18 +0100 [thread overview]
Message-ID: <20221122081219.20143-1-frieder@fris.de> (raw)
From: Frieder Schrempf <frieder.schrempf@kontron.de>
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>
---
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 7ba9467fff12..047c14ddbbf1 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);
--
2.38.1
next reply other threads:[~2022-11-22 8:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-22 8:12 Frieder Schrempf [this message]
2022-11-24 11:00 ` Alexander Stein
2022-11-24 11:07 ` Frieder Schrempf
2022-11-24 12:16 ` Robert Foss
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