Re: [Xen-users] i2c pass-through in mpsoc

[Julien Grall <julien.grall@xxxxxxx>]

On 13/10/17 10:55, Jesús Lázaro wrote:
> Hi,
Hello,

> Avoiding the dtdev property avoids any error. Now the issue is that, 
> although in the devicetree/passthrough section the i2c appears, the 
> kernel fails to load any drivers and does not create the /dev/i2c device.
> The dom0 kernel has XEN support following 
> https://wiki.xenproject.org/wiki/Mainline_Linux_Kernel_Configs
> dmesg does not offer any messages regarding issues with the i2c.
I am a bit confused. You say you pass-through to a guest, but speak 
about Dom0 kernel. So the dmesg is from DomU or Dom0?
Note that when doing platform device passthrough, Dom0 kernel is not 
involved in the process. The guest will have full access and should 
detect it via device-tree.
Make sure you have I2C built in your guest kernel.

Cheers,

--
Julien Grall

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