[PATCH 0/4] mailbox: mpfs-mbox: fixes and syscon support

[Conor Dooley]

Tom,

On Tue, May 19, 2026 at 05:24:30PM +0100, Conor Dooley wrote:
> On Mon, May 18, 2026 at 03:17:08PM +0100, Jamie Gibbons wrote:
> > Hi all,
> > 
> > This series updates the Microchip PolarFire SoC (MPFS) mailbox driver in
> > U-Boot.
> > 
> > The first three patches contain a set of bug fixes and cleanups to the
> > existing driver, fixing MMIO size calculations, and removing invalid
> > mailbox channel and private-data handling. These changes are independent
> > of any devicetree updates and fix issues present in the legacy driver.
> > 
> > The final patch adds support for the corrected, syscon-based devicetree
> > bindings for the MPFS mailbox. Linux has moved to this binding to more
> > accurately model the hardware, and U-Boot already supports the same
> > approach for the MPFS clock controller. This patch updates the mailbox
> > driver accordingly, while retaining support for the legacy binding for
> > backwards compatibility.
> > 
> > The final patch is required ASAP as boot is currently broken on master
> > for MPFS generic boards.
> > 
> > Tested on a PolarFire SoC Icicle Kit ES.
> > 
> > Thanks,
> > Jamie
> > 
> > Jamie Gibbons (4):
> >   mailbox: mpfs-mbox: fix MMIO mapping calculation
> >   mailbox: mpfs-mbox: fix Driver Model private data handling
> >   mailbox: mpfs-mbox: fix driver bug and cleanup
> >   mailbox: mpfs-mbox: support new syscon based devicetree configuration
> 
> Reviewed-by: Conor Dooley <conor.dooley at microchip.com>

Would you be able to grab this please? Your current mainline branch is
failing to boot because the last dt-rebasing version jump brought in a
changed dts from linux that requires the syscon-based devicetree setup.

Thanks,
Conor.
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