Re: [PATCH 2/2] arm64: dts: zena: Add support for Zena CSS

From: Andre Przywara

Date: Thu Feb 05 2026 - 06:25:56 EST




On 2/5/26 12:08, Sudeep Holla wrote:
On Tue, Feb 03, 2026 at 12:11:57PM +0000, Cristian Marussi wrote:

All of this madness was the best way I could find to address the problem
of supporting such new unidirectional mailboxes in the SCMI while NOT
breaking backward compatibility in the absence of mandatory naming from
the start.


You can attribute this to my expecting an overly ideal scenario with
bidirectional mailbox channels across all platforms using SCMI. At the time, I
did not anticipate the range of configurations that rely on unidirectional
channels.

Would it make sense then to add mbox-names parsing to the code, to accommodate new users? There is precedence in some drivers for introducing xyz-names for clearer and unambiguous resolution, while still falling back to some legacy, fixed associations in case the names property doesn't exist.

Cheers,
Andre