From ccdd4aac5f4b1e735c4372d2f12884a3ff0eb524 Mon Sep 17 00:00:00 2001 From: Michael Grzeschik Date: Tue, 2 Apr 2024 08:17:17 +0200 Subject: [PATCH] usb: phy-generic: add short delay after pulling the reset pin After pulling the reset pin some phys are not immediately ready. We add a short delay of at least 10 ms to ensure that the phy can be properly used. Signed-off-by: Michael Grzeschik Link: https://lore.kernel.org/r/20240402-phy-misc-v1-1-de5c17f93f17@pengutronix.de Signed-off-by: Greg Kroah-Hartman --- drivers/usb/phy/phy-generic.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c index fdcffebf415c..e7d50e0a1612 100644 --- a/drivers/usb/phy/phy-generic.c +++ b/drivers/usb/phy/phy-generic.c @@ -71,6 +71,7 @@ static void nop_reset(struct usb_phy_generic *nop) gpiod_set_value_cansleep(nop->gpiod_reset, 1); usleep_range(10000, 20000); gpiod_set_value_cansleep(nop->gpiod_reset, 0); + usleep_range(10000, 30000); } /* interface to regulator framework */ -- 2.25.1