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usb-designware: allow setting FDMOD bit to force device mode

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If the PHY doesn't correctly report the ID pin state,
then the DWC2 core may operate in host mode by default.

Defining USB_DW_FORCE_DEVICE_MODE in the target config
will set the FDMOD bit in the GUSBCFG register to force
the core into device mode regardless of what the PHY
reports.

Change-Id: If2391aaa4a7c65ba6c90dd56074faeb3ed1ac2ca
This commit is contained in:
Aidan MacDonald 2026-01-08 00:32:48 +00:00
parent 361cd46a08
commit 5dd2756b14
1 changed files with 7 additions and 1 deletions
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8
firmware/drivers/usb-designware.c
View file

@ -87,6 +87,12 @@
#define USB_DW_TOUTCAL 0
#endif
#ifdef USB_DW_FORCE_DEVICE_MODE
#define USB_DW_FORCED_MODE FDMOD
#else
#define USB_DW_FORCED_MODE 0
#endif
#define GET_DTXFNUM(ep) ((DWC_DIEPCTL(ep)>>22) & 0xf)
#define USB_DW_NUM_DIRS 2
@ -1417,7 +1423,7 @@ static void usb_dw_init(void)
*/
int USB_DW_TURNAROUND = (c->phytype == DWC_PHYTYPE_UTMI_16) ? 5 : 9;
#endif
uint32_t gusbcfg = c->phytype|TRDT(USB_DW_TURNAROUND)|USB_DW_TOUTCAL;
uint32_t gusbcfg = c->phytype|TRDT(USB_DW_TURNAROUND)|USB_DW_TOUTCAL|USB_DW_FORCED_MODE;
DWC_GUSBCFG = gusbcfg;
/* Reset the whole USB core */