CONFIG_USB_XHCI_DWC3 is not required for AM62x as the XHCI driver is registered through the dwc3-generic driver.
CONFIG_USB_XHCI_DWC3 causes problems by hijacking the USB controller even if it is not set for Host mode in device tree.
'dm tree' output after 'usb start' is fixed from
simple_bus 5 [ + ] dwc3-am62 | |-- dwc3-usb@f900000 usb_gadget 0 [ ] dwc3-generic-periphe | | |-- usb@31000000 usb 0 [ + ] xhci-dwc3 | | `-- usb@31000000 usb_hub 0 [ + ] usb_hub | | `-- usb_hub simple_bus 6 [ + ] dwc3-am62 | |-- dwc3-usb@f910000 usb 1 [ + ] dwc3-generic-host | | |-- usb@31100000 usb_hub 1 [ + ] usb_hub | | | `-- usb_hub usb 1 [ + ] xhci-dwc3 | | `-- usb@31100000 usb_hub 2 [ + ] usb_hub | | `-- usb_hub
[notice that 'xhci-dwc3' and 'usb_hub' drivers are probed for both USB instances although the first instance is supposed to be 'peripheral' only]
to
simple_bus 5 [ ] dwc3-am62 | |-- dwc3-usb@f900000 usb_gadget 0 [ ] dwc3-generic-periphe | | `-- usb@31000000 simple_bus 6 [ + ] dwc3-am62 | |-- dwc3-usb@f910000 usb 1 [ + ] dwc3-generic-host | | `-- usb@31100000 usb_hub 0 [ + ] usb_hub | | `-- usb_hub
Fixes: dfc2dff5a844 ("configs: am62x_evm_*: Enable USB and DFU support") Signed-off-by: Roger Quadros rogerq@kernel.org --- configs/am62x_a53_usbdfu.config | 1 - 1 file changed, 1 deletion(-)
diff --git a/configs/am62x_a53_usbdfu.config b/configs/am62x_a53_usbdfu.config index 3a19cf23287..0d3c6df1e73 100644 --- a/configs/am62x_a53_usbdfu.config +++ b/configs/am62x_a53_usbdfu.config @@ -16,7 +16,6 @@ CONFIG_USB=y CONFIG_DM_USB_GADGET=y CONFIG_SPL_DM_USB_GADGET=y CONFIG_USB_XHCI_HCD=y -CONFIG_USB_XHCI_DWC3=y CONFIG_USB_DWC3=y CONFIG_USB_DWC3_GENERIC=y CONFIG_SPL_USB_DWC3_GENERIC=y
--- base-commit: 3073246d1be682071d8b3d07d06c2484907aed60 change-id: 20241203-am62-usb-xhci-be62bc9584c9
Best regards,