linux-kernel - Re: [PATCH 0/3] Retire remaining WindRiver embedded SBC BSPs

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Date:   Fri, 9 Jul 2021 08:48:22 -0400
From:   Paul Gortmaker <paul.gortmaker@...driver.com>
To:     linuxppc-dev@...ts.ozlabs.org
Cc:     linux-kernel@...r.kernel.org,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Paul Mackerras <paulus@...ba.org>,
        Scott Wood <oss@...error.net>
Subject: Re: [PATCH 0/3] Retire remaining WindRiver embedded SBC BSPs

[[PATCH 0/3] Retire remaining WindRiver embedded SBC BSPs] On 11/01/2021 (Mon 03:28) Paul Gortmaker wrote:

> In v2.6.27 (2008, 917f0af9e5a9) the sbc8260 support was implicitly
> retired by not being carried forward through the ppc --> powerpc
> device tree transition.
> 
> Then, in v3.6 (2012, b048b4e17cbb) we retired the support for the
> sbc8560 boards.
> 
> Next, in v4.18 (2017, 3bc6cf5a86e5) we retired the support for the
> 2006 vintage sbc834x boards.
> 
> The sbc8548 and sbc8641d boards were maybe 1-2 years newer than the
> sbc834x boards, but it is also 3+ years later, so it makes sense to
> now retire them as well - which is what is done here.

Any chance we can ensure this gets queued for v5.15 once the merge
window closes?   I don't like to nag, but it has been six months, and
even the U-boot guys have since removed these old platforms.

https://lists.denx.de/pipermail/u-boot/2021-July/454081.html
https://lists.denx.de/pipermail/u-boot/2021-July/454089.html

Thanks,
Paul.
--

> 
> These two remaining WR boards were based on the Freescale MPC8548-CDS
> and the MPC8641D-HPCN reference board implementations.  Having had the
> chance to use these and many other Fsl ref boards, I know this:  The
> Freescale reference boards were typically produced in limited quantity
> and primarily available to BSP developers and hardware designers, and
> not likely to have found a 2nd life with hobbyists and/or collectors.
> 
> It was good to have that BSP code subjected to mainline review and
> hence also widely available back in the day. But given the above, we
> should probably also be giving serious consideration to retiring
> additional similar age/type reference board platforms as well.
> 
> I've always felt it is important for us to be proactive in retiring
> old code, since it has a genuine non-zero carrying cost, as described
> in the 930d52c012b8 merge log.  But for the here and now, we just
> clean up the remaining BSP code that I had added for SBC platforms.
> 
> Paul.
> -- 
> 
> Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> Cc: Michael Ellerman <mpe@...erman.id.au>
> Cc: Paul Mackerras <paulus@...ba.org>
> Cc: Scott Wood <oss@...error.net>
> 
> The following changes since commit 7c53f6b671f4aba70ff15e1b05148b10d58c2837:
> 
>   Linux 5.11-rc3 (2021-01-10 14:34:50 -0800)
> 
> are available in the Git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux.git wr_sbc-delete
> 
> for you to fetch changes up to 1dfb28199572e3f6517cada41f6a150551749da1:
> 
>   MAINTAINERS: update for Paul Gortmaker (2021-01-11 00:06:01 -0500)
> 
> ----------------------------------------------------------------
> Paul Gortmaker (3):
>       powerpc: retire sbc8548 board support
>       powerpc: retire sbc8641d board support
>       MAINTAINERS: update for Paul Gortmaker
> 
>  MAINTAINERS                                 |   1 -
>  arch/powerpc/boot/Makefile                  |   1 -
>  arch/powerpc/boot/dts/fsl/sbc8641d.dts      | 176 -----------------
>  arch/powerpc/boot/dts/sbc8548-altflash.dts  | 111 -----------
>  arch/powerpc/boot/dts/sbc8548-post.dtsi     | 289 ----------------------------
>  arch/powerpc/boot/dts/sbc8548-pre.dtsi      |  48 -----
>  arch/powerpc/boot/dts/sbc8548.dts           | 106 ----------
>  arch/powerpc/boot/wrapper                   |   2 +-
>  arch/powerpc/configs/85xx/sbc8548_defconfig |  50 -----
>  arch/powerpc/configs/mpc85xx_base.config    |   1 -
>  arch/powerpc/configs/mpc86xx_base.config    |   1 -
>  arch/powerpc/configs/ppc6xx_defconfig       |   1 -
>  arch/powerpc/platforms/85xx/Kconfig         |   6 -
>  arch/powerpc/platforms/85xx/Makefile        |   1 -
>  arch/powerpc/platforms/85xx/sbc8548.c       | 134 -------------
>  arch/powerpc/platforms/86xx/Kconfig         |   8 +-
>  arch/powerpc/platforms/86xx/Makefile        |   1 -
>  arch/powerpc/platforms/86xx/sbc8641d.c      |  87 ---------
>  18 files changed, 2 insertions(+), 1022 deletions(-)
>  delete mode 100644 arch/powerpc/boot/dts/fsl/sbc8641d.dts
>  delete mode 100644 arch/powerpc/boot/dts/sbc8548-altflash.dts
>  delete mode 100644 arch/powerpc/boot/dts/sbc8548-post.dtsi
>  delete mode 100644 arch/powerpc/boot/dts/sbc8548-pre.dtsi
>  delete mode 100644 arch/powerpc/boot/dts/sbc8548.dts
>  delete mode 100644 arch/powerpc/configs/85xx/sbc8548_defconfig
>  delete mode 100644 arch/powerpc/platforms/85xx/sbc8548.c
>  delete mode 100644 arch/powerpc/platforms/86xx/sbc8641d.c