diff mbox series

[U-Boot,05/16] phy: usbphyc: increase PLL wait timeout

Message ID 1553870544-15734-6-git-send-email-patrick.delaunay@st.com
State Accepted
Commit 901f6950a482d11849b7c748eaef7bda010e91dc
Delegated to: Lukasz Majewski
Headers show
Series usb: convert dwc2 gadget to driver model, used in stm32mp1 | expand

Commit Message

Patrick DELAUNAY March 29, 2019, 2:42 p.m. UTC 
wait 200us to solve USB init issue on device mode
(ums and stm32prog commands)

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
---

 drivers/phy/phy-stm32-usbphyc.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/drivers/phy/phy-stm32-usbphyc.c b/drivers/phy/phy-stm32-usbphyc.c
index 54363cd..6f11190 100644
--- a/drivers/phy/phy-stm32-usbphyc.c
+++ b/drivers/phy/phy-stm32-usbphyc.c
@@ -37,7 +37,8 @@ 
 
 #define MAX_PHYS		2
 
-#define PLL_LOCK_TIME_US	100
+/* max 100 us for PLL lock and 100 us for PHY init */
+#define PLL_INIT_TIME_US	200
 #define PLL_PWR_DOWN_TIME_US	5
 #define PLL_FVCO		2880	 /* in MHz */
 #define PLL_INFF_MIN_RATE	19200000 /* in Hz */
@@ -177,11 +178,8 @@  static int stm32_usbphyc_phy_init(struct phy *phy)
 
 	setbits_le32(usbphyc->base + STM32_USBPHYC_PLL, PLLEN);
 
-	/*
-	 * We must wait PLL_LOCK_TIME_US before checking that PLLEN
-	 * bit is still set
-	 */
-	udelay(PLL_LOCK_TIME_US);
+	/* We must wait PLL_INIT_TIME_US before using PHY */
+	udelay(PLL_INIT_TIME_US);
 
 	if (!(readl(usbphyc->base + STM32_USBPHYC_PLL) & PLLEN))
 		return -EIO;