Re: [PATCH] mux: mmio: Do not use syscon helper to build regmap

[Greg Kroah-Hartman]

On Thu, Jan 23, 2025 at 02:04:12PM -0600, Nishanth Menon wrote:
> On 12:20-20250123, Andrew Davis wrote:
> > The syscon helper device_node_to_regmap() is used to fetch a regmap
> > registered to a device node. It also currently creates this regmap
> > if the node did not already have a regmap associated with it. This
> > should only be used on "syscon" nodes. This driver is not such a
> > device and instead uses device_node_to_regmap() on its own node as
> > a hacky way to create a regmap for itself.
> > 
> > This will not work going forward and so we should create our regmap
> > the normal way by defining our regmap_config, fetching our memory
> > resource, then using the normal regmap_init_mmio() function.
> > 
> > Signed-off-by: Andrew Davis <afd@xxxxxx>
> > ---
> Tested-by: Nishanth Menon <nm@xxxxxx>
> 
> Greg, Peter,
> 
> This is part of the fixes TI K3 platforms boot issues reported in
> https://lore.kernel.org/all/b2413460-ec8b-4c77-99b8-4c32b262439a@xxxxxx/
> on the latest linus master v6.13-5001-gd0d106a2bd21 + linux
> next-20250123
> 
> Total set of patches tested with:
> https://lore.kernel.org/all/20250119182121.3956546-1-vaishnav.a@xxxxxx/
> https://lore.kernel.org/r/20250123181726.597144-1-afd@xxxxxx
> https://lore.kernel.org/r/20250123181913.597304-1-afd@xxxxxx
> https://lore.kernel.org/r/20250123182059.597491-1-afd@xxxxxx
> https://lore.kernel.org/r/20250123182234.597665-1-afd@xxxxxx
> 
> Could we get this routed to master as fixes asap please to get a sane 6.14?

Our trees are of course closed right now due to the merge window, you
know that :)

So we can take things after -rc1 is out, and route bugfixes for
6.14-final and new stuff for 6.15-rc1, like always.  It's hard to see
that this is just a bugfix, but if it is, it needs a Fixes: tag at the
very least, right?

thanks,

greg k-h