W dniu 5.06.2023 o 11:55, Yuquan Wang pisze:
The current sbsa-ref cannot use EHCI controller which is only
able to do 32-bit DMA, since sbsa-ref doesn't have RAM below 4GB.
Hence, this uses XHCI to provide a usb controller with 64-bit
DMA capablity instead of EHCI.
Signed-off-by: Yuquan Wang<wangyuquan1...@phytium.com.cn>
Reviewed-by: Marcin Juszkiewicz <marcin.juszkiew...@linaro.org>
Without EDK2 changes Linux behaves same way (no USB found), with EDK2
changes (EHCI->XHCI) Linux gets USB devices.
