diff options
| author | Uwe Bonnes <[email protected]> | 2020-07-01 14:45:07 +0200 |
|---|---|---|
| committer | Uwe Bonnes <[email protected]> | 2020-07-01 14:45:07 +0200 |
| commit | 196bdbc7024fcfd3f94e4609cee6580df5bab70b (patch) | |
| tree | fac7b9c2faae78cbce8d390ea37b01bc39bdf4c0 /src/portable | |
| parent | 530b0099a55492bb1bc2f5cda3530569d221e8d4 (diff) | |
st/synopsys/dcd_synopsys.c: Remove USBC PHY PLL stabilization delay for now
While the ST code has a 2 ms stabilization delay for the USBC PHY PLL,
running without this delay showed no problem for at leat 10 USB un/replug
cycles. Observe for problems!
Diffstat (limited to 'src/portable')
| -rw-r--r-- | src/portable/st/synopsys/dcd_synopsys.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/portable/st/synopsys/dcd_synopsys.c b/src/portable/st/synopsys/dcd_synopsys.c index ba3cc3460..4a372348a 100644 --- a/src/portable/st/synopsys/dcd_synopsys.c +++ b/src/portable/st/synopsys/dcd_synopsys.c @@ -27,7 +27,6 @@ */ #include "tusb_option.h" -#include "../../../../hw/bsp//board.h" #if defined (STM32F105x8) || defined (STM32F105xB) || defined (STM32F105xC) || \ defined (STM32F107xB) || defined (STM32F107xC) @@ -349,7 +348,12 @@ static bool USB_HS_PHYCInit(void) // Enable PLL internal PHY usb_hs_phyc->USB_HS_PHYC_PLL = phyc_pll | USB_HS_PHYC_PLL_PLLEN; - board_delay(2); + /* Original ST code has 2 ms delay for PLL stabilization. + * Primitive test shows that more than 10 USB un/replug cycle + * showed no error with enumeration + * //#include "../../../../hw/bsp//board.h" + * //board_delay(2); + */ return true; } # endif |