2024-04-02 06:17:40

by Michael Grzeschik

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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 <[email protected]>
---
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 fdcffebf415cd..e7d50e0a16123 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 */

---
base-commit: 5bab5dc780c9ed0c69fc2f828015532acf4a7848
change-id: 20240402-phy-misc-e3f056ec3f29

Best regards,
--
Michael Grzeschik <[email protected]>