[PATCH RESEND 06/11] Revert "x86/geode: enable X86_INTEL_LPSS to select PINCTRL"

[Elliott Mitchell]

On Tue, Dec 12, 2023 at 04:54:05PM +0100, Jonas Gorski wrote:
> 
> On Sun, 10 Dec 2023 at 18:51, Elliott Mitchell <ehem+openwrt at m5p.com> wrote:
> >
> > Date: Fri, 3 Nov 2023 22:57:43 -0700
> >
> > Enabling an Intel chipset feature on a platform originally made by
> > National Semiconductor and later bought by AMD.  Could we cut the Intel
> > enthusiasm?
> >
> > This reverts commit 4eda2fddf2995c8ade2b1e0faddc8ce1f1e0ec5f.
> 
> commit 4eda2fddf2995c8ade2b1e0faddc8ce1f1e0ec5f says "This makes it
> possible to use the MCP23S08 i/o expander on geode platforms with
> linux 4.14."

Problem is this is nonsensical.  A Geode processor CANNOT be paired with
an Intel chipset (the original Geode GX1 came out of National
Semiconductor/Cyrix and was later bought by AMD).

> So we don't need to enable PINCTRL (via other symbols) anymore for this?

No idea, I wasn't able to find very much information when I looked at
this.

I did find:
https://lists.openwrt.org/pipermail/openwrt-devel/2018-August/019479.html

This doesn't tell me what platform Martin Schiller was trying for.
17f30bfcf7 makes me suspect Martin Schiller was simply trying to do this
to all x86 platforms and didn't realize geode was a specialized target.

Alternatively Martin Schiller may have been trying to use a MCP23S08 on a
Geode processor.  Unfortunately using CONFIG_X86_INTEL_LPSS is a bizzare
choice since CONFIG_X86_AMD_PLATFORM_DEVICE has fewer side-effects and
then current Geodes were AMD processors.

With sparse information the former is my present belief.  Is anyone
reading this list using a Geode processor with a MCP23S08?  Otherwise my
present belief is only people with Intel x86 processors are interested in
the MCP23S08.


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