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arch/mach-meson has some custom usb logic, in particular: * on board_usb_init(), we force USB_DR_MODE_PERIPHERAL * on board_usb_cleanup(), we force USB_DR_MODE_HOST With DM_USB_GADGET=y, board_usb_init/cleanup() are no longer used when we call usb_gadget_initialize(). Instead, the generic (from udc-uclass) initialization/release is called, which itself calls the controller driver's probe()/remove(). Therefore, enabling DM_USB_GADGET=y will mean that this mode switching will break. To prepare for enabling DM_USB_GADGET, perform the mode switching when the "amlogic,meson-g12a-usb" (dwc2) driver is probed()/removed() instead. This is achieved via the glue driver, which gets notified each time one of its children is probed()/removed. Note: this change should be harmless without DM_USB_GADGET=y because the amlogic-g12a-usb driver is not probed via driver model. Thanks for Mattijs for the original work at [1]. [1] https://lore.kernel.org/all/20221024-meson-dm-usb-v1-1-2ab077a503b9@baylibre.com/ Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> Reviewed-by: Marek Vasut <marex@denx.de> Link: https://lore.kernel.org/r/20230117-u-boot-usb-gxl-otg-dm-v1-1-2853f6d75b06@linaro.org Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> |
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| .. | ||
| core.c | ||
| core.h | ||
| dwc3-generic.c | ||
| dwc3-layerscape.c | ||
| dwc3-meson-g12a.c | ||
| dwc3-meson-gxl.c | ||
| dwc3-omap.c | ||
| dwc3-uniphier.c | ||
| ep0.c | ||
| gadget.c | ||
| gadget.h | ||
| io.h | ||
| Kconfig | ||
| linux-compat.h | ||
| Makefile | ||
| samsung_usb_phy.c | ||
| ti_usb_phy.c | ||