On Mon, 20 Jan 2025 at 20:38, Bernhard Beschow <shen...@gmail.com> wrote: > > Linux checks for the PLLs in the PHY to be locked, so implement a model > emulating that. > > Signed-off-by: Bernhard Beschow <shen...@gmail.com>
> diff --git a/docs/system/arm/imx8mp-evk.rst b/docs/system/arm/imx8mp-evk.rst > index 1514bc5864..8d48580cb4 100644 > --- a/docs/system/arm/imx8mp-evk.rst > +++ b/docs/system/arm/imx8mp-evk.rst > @@ -14,6 +14,7 @@ The ``imx8mp-evk`` machine implements the following devices: > * Generic Interrupt Controller (GICv3) > * 4 UARTs > * 3 USDHC Storage Controllers > + * 1 Designware PCI Express Controller > * Secure Non-Volatile Storage (SNVS) including an RTC > * Clock Tree > > @@ -62,3 +63,15 @@ Now that everything is prepared the newly built image can > be run in the QEMU > -dtb imx8mp-evk-patched.dtb \ > -append "root=/dev/mmcblk2p2" \ > -drive file=sdcard.img,if=sd,bus=2,format=raw,id=mmcblk2 > + > +Using PCI Devices > +----------------- > + > +The PCI Express controller spawns two PCI buses, of which only one can be > used. > +By default QEMU assigns the wrong bus, so the correct one has to be specified > +manually by adding ``bus=dw-pcie``. For example, when adding an Intel e1000 > +network card, the command line looks like: > + > +.. code-block:: bash > + > + $ qemu-system-aarch64 -M imximp-evk ... -device virtio-net-pci,bus=dw-pcie Why does this happen? Isn't there some way to make QEMU default to using the right bus? Otherwise there's likely to be a lot of user confusion because PCI "doesn't work"... thanks -- PMM
