The Linux support for dwc3 on Apple silicon SoCs switched to using a apple specific glue driver [1] that uses it own compatible string. The glue driver handles platform specific requirements on the interaction between dwc3 and the USB2/USB3 PHY and reset-controller for USB role switches and plug events. To keep USB working as before when the nodes still carried "snps,dwc3" as compatible add "apple,t8103-dwc3" to the of match table. Eventually it is probably advisable to add a dwc3-apple glue driver and write code for the currently empty Apple Type-C PHY driver in phy-apple-atc.c.
Link: https://lore.kernel.org/asahi/[email protected]/ [1] Signed-off-by: Janne Grunau <[email protected]> --- drivers/usb/host/xhci-dwc3.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/host/xhci-dwc3.c b/drivers/usb/host/xhci-dwc3.c index e3e0ceff43e6abdb8643f265819eff28c2c802f4..ba42c3247654b7d9272c42ea9c4cf0bd9082915e 100644 --- a/drivers/usb/host/xhci-dwc3.c +++ b/drivers/usb/host/xhci-dwc3.c @@ -238,6 +238,7 @@ static int xhci_dwc3_remove(struct udevice *dev) static const struct udevice_id xhci_dwc3_ids[] = { { .compatible = "snps,dwc3" }, + { .compatible = "apple,t8103-dwc3" }, { } }; --- base-commit: 127a42c7257a6ffbbd1575ed1cbaa8f5408a44b3 change-id: 20260109-usb-dwc3-apple-compat-linux-821ee75bec48 Best regards, -- Janne Grunau <[email protected]>
