Re: [PATCH] dt-bindings: ufs: Add msi-parent for UFS MCQ

[Bart Van Assche]

On 11/6/23 06:48, Rob Herring wrote:
> On Wed, Nov 01, 2023 at 06:48:13PM +0800, Ziqi Chen wrote:
> > The Message Signaled Interrupts (MSI) has been introduced
> > to UFS driver since the MCQ be enabled.
>
> Not really relevant when a driver supported MSI, but the when the h/w
> did. Has UFS always supported MSI? It was added in some version of the
> spec?

MSI support has been introduced in UFSHCI version 4.0 and I think that
the controller vendor can decide whether or not to implement MSI. Does
this mean that the patch needs to be improved?

Thanks,

Bart.