# Re: \[PATCH 2/5\] virtio\_mmio: Bind virtio device to device-tree node

- From: Viresh Kumar \<viresh.kumar@linaro.org\>
- Date: 2021-07-14 03:11:31 
- List: linux-devicetree
- Page: https://ratatoskr.run/linux-devicetree/2021/07/1443641
- Thread: https://ratatoskr.run/linux-devicetree/2021/07/1442787/t.md

```text
On 13-07-21, 14:26, Arnd Bergmann wrote:
> On Tue, Jul 13, 2021 at 12:51 PM Viresh Kumar [ref] wrote:
> >
> > Bind the virtio device with its device protocol's sub-node. This will
> > help users of the virtio device to mention their dependencies on the
> > device in the DT file itself. Like GPIO pin users can use the phandle of
> > the device node, or the node may contain more subnodes to add i2c or spi
> > eeproms and other users.
> >
> > Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
> > ---
> >  drivers/virtio/virtio_mmio.c | 44 ++++++++++++++++++++++++++++++++++++
> >  1 file changed, 44 insertions(+)
> 
> Hi Viresh,
> 
> I don't see anything in this patch that is specific to virtio-mmio, as
> opposed to
> virtio-pci. It would be better to move this into the virtio core code so it can
> be called independently of the transport that is used for virtio.
> 
> The PCI code has similar code that will set vdev->dev.parent->of_node
> for a virtio-pci device, as long as that node is present.

Sure.
-- 
viresh
```