From 8910b732789aa4008ffb7a51f88d4128172333a2 Mon Sep 17 00:00:00 2001 From: Kuro Chung Date: Wed, 12 Mar 2025 22:51:00 +0900 Subject: [PATCH] drm/bridge: it6505: update usleep_range for RC circuit charge time BugLink: https://bugs.launchpad.net/bugs/2102118 [ 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 Signed-off-by: Hermes Wu Reviewed-by: Robert Foss Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20240604024405.1122488-1-kuro.chung@ite.com.tw Stable-dep-of: c5f3f21728b0 ("drm/bridge: it6505: Fix inverted reset polarity") Signed-off-by: Sasha Levin Signed-off-by: Koichiro Den Signed-off-by: Stefan Bader --- drivers/gpu/drm/bridge/ite-it6505.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c index 93eb8fba23d4..fda2c565fdb3 100644 --- a/drivers/gpu/drm/bridge/ite-it6505.c +++ b/drivers/gpu/drm/bridge/ite-it6505.c @@ -2614,7 +2614,7 @@ 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;