On 2023-12-13 02:45, Elliott Mitchell wrote:
On Tue, Dec 12, 2023 at 04:54:05PM +0100, Jonas Gorski wrote:
On Sun, 10 Dec 2023 at 18:51, Elliott Mitchell <ehem+open...@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 Enabling an Intel chipset feature on a platform originally made by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.
Hi.
The problem was and is that the PINCTRL subsystem can only be used on
x86
platforms if either X86_INTEL_LPSS or X86_AMD_PLATFORM_DEVICE is
activated.
I no longer know why I chose the former at the time.
X86_AMD_PLATFORM_DEVICE is now activated for x86/generic and x86/64.
From my point of view, we can deactivate X86_INTEL_LPSS if no one else
need it.
Regards,
Martin
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