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https://en.wikibooks.org/wiki/QEMU/Devices/USB/Root
QEMU/Devices/USB/Root. From Wikibooks, open books for an open world < QEMU ... EHCI controllers can only handle USB 2.0 (with a few exceptions not included by QEMU), so a companion controller is needed for USB 1.x. ... PCI UHCI . Intel and VIA controllers fall into this section. Other vendors tend to use OHCI. These controllers support USB 1 ...
https://github.com/qemu/qemu/blob/master/docs/usb2.txt
Aug 21, 2018 · EHCI controller support-----The QEMU EHCI Adapter supports USB 2.0 devices. It can be used either: standalone or with companion controllers (UHCI, OHCI) for USB 1.1: devices. The companion controller setup is more convenient to use: because it provides a single USB bus supporting both USB 2.0 and USB: 1.1 devices. See next section for details.
https://wiki.qemu.org/Google_Summer_of_Code_2011
Upstreaming EHCI support. There exists a good foundation for EHCI support in out-of-tree repository. But it hasn't been proposed for merge yet due to a few open issues. The list below reflects potential sub-tasks but it's not necessarily up-to-date with latest development: testing and stabilizing host pass-through of various devices
https://sourceforge.net/p/aqemu/patches/6/
Add USB 2.0 ehci support 0001-Adding-ehci-support.patch If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
https://forums.xilinx.com/t5/Embedded-Linux/QEMU-with-Running-With-USB-Support/td-p/901774
Oct 23, 2018 · Here is the output of petalinux QEMU command. You need to run 2 instances of microblaze for PMUFW and other instance of ARM for other boot images. I would rather suggest to use petalinux which automatically runs these instances when you run petalinux-boot --root --qemu --kernel --qemu-args "-device usb-ehci,id=ehci"
http://patchwork.ozlabs.org/patch/46878/
Re: EHCI support in QEMU 46878 diff mbox Message ID: [email protected]: State: New: Headers
https://github.com/qemu/qemu/blob/master/hw/usb/hcd-ehci.c
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https://en.wikipedia.org/wiki/Qemu
QEMU versions starting with 0.12.0 (as of August 2009) support large memory which makes them incompatible with KQEMU. Newer releases of QEMU have completely removed support for KQEMU. QVM86 was a GNU GPLv2 licensed drop-in replacement for the then closed-source KQEMU. The developers of QVM86 ceased development in January, 2007.Original author(s): Fabrice Bellard
https://wiki.qemu.org/ChangeLog/2.2
Support for hot-plugging XHCI/EHCI/UHCI controllers (in the case of EHCI/UHCI, only if there are no companion controllers). Support for USB 2.0 (high speed) mice and keyboards, complementing the existing support for high speed USB tablets. High speed devices avoid the less efficient UHCI controller, and thus use less CPU on the host. VGA
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