This is a note to let you know that I've just added the patch titled
drm/bridge: it6505: update usleep_range for RC circuit charge time
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-bridge-it6505-update-usleep_range-for-rc-circuit.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 66afc84a89c42e65240e145b7f2092d48f51a81f
Author: Kuro Chung <kuro.chung@xxxxxxxxxx>
Date: Tue Jun 4 10:44:05 2024 +0800
drm/bridge: it6505: update usleep_range for RC circuit charge time
[ Upstream commit 8814444e62b8a8b573fba2cbbb327d5817b74eb0 ]
The spec of timing between IVDD/OVDD and SYSRTEN is 10ms, but SYSRSTN RC
circuit need at least 25ms for rising time, update for match spec
Signed-off-by: Kuro Chung <kuro.chung@xxxxxxxxxx>
Signed-off-by: Hermes Wu <hermes.wu@xxxxxxxxxx>
Reviewed-by: Robert Foss <rfoss@xxxxxxxxxx>
Signed-off-by: Robert Foss <rfoss@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20240604024405.1122488-1-kuro.chung@xxxxxxxxxx
Stable-dep-of: c5f3f21728b0 ("drm/bridge: it6505: Fix inverted reset polarity")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c
index 292c4f6da04af..aad750ad4798d 100644
--- a/drivers/gpu/drm/bridge/ite-it6505.c
+++ b/drivers/gpu/drm/bridge/ite-it6505.c
@@ -2563,7 +2563,7 @@ static int it6505_poweron(struct it6505 *it6505)
gpiod_set_value_cansleep(pdata->gpiod_reset, 0);
usleep_range(1000, 2000);
gpiod_set_value_cansleep(pdata->gpiod_reset, 1);
- usleep_range(10000, 20000);
+ usleep_range(25000, 35000);
}
it6505->powered = true;
