Messages in this thread | | | Date | Mon, 6 Nov 2023 09:56:23 -0800 | Subject | Re: [PATCH] dt-bindings: ufs: Add msi-parent for UFS MCQ | From | 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.
| |