[PATCH 0/2] powerpc: Remove support for ppc405/440 Xilinx platforms

[Arnd Bergmann]

On Fri, Mar 27, 2020 at 1:12 PM Michal Simek <michal.simek at xilinx.com> wrote:
>
> recently we wanted to update xilinx intc driver and we found that function
> which we wanted to remove is still wired by ancient Xilinx PowerPC
> platforms. Here is the thread about it.
> https://lore.kernel.org/linux-next/48d3232d-0f1d-42ea-3109-f44bbabfa2e8@xilinx.com/
>
> I have been talking about it internally and there is no interest in these
> platforms and it is also orphan for quite a long time. None is really
> running/testing these platforms regularly that's why I think it makes sense
> to remove them also with drivers which are specific to this platform.
>
> U-Boot support was removed in 2017 without anybody complain about it
> https://github.com/Xilinx/u-boot-xlnx/commit/98f705c9cefdfdba62c069821bbba10273a0a8ed
>
> Based on current ppc/next.
>
> If anyone has any objection about it, please let me know.

Acked-by: Arnd Bergmann <arnd at arndb.de>

This looks reasonable to me as well, in particular as the code only
supports the two
ppc44x virtex developer boards and no commercial products.

It does raise a follow-up question about ppc40x though: is it time to
retire all of it?
The other ppc405 machines appear to have seen even fewer updates after the
OpenBlockS 600 got added in 2011, so it's possible nobody is using them any more
with modern kernels.

I see that OpenWRT removed both ppc40x and ppc44x exactly a year ago after
they had not been maintained for years.

However, 44x (in its ppc476 incarnation) is clearly still is used
through the fsp2 platform,
and can not be deprecated at least until that is known to have stopped
getting kernel
updates.

        Arnd