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 --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;