Re: [PATCH 1/2] ARM: pxa: remove Compulab pxa2xx boards

From: Robert Jarzmik <robert.jarzmik@free.fr>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>,
	igor <igor@compulab.co.il>,
	Boris Brezillon <boris.brezillon@collabora.com>,
	linux-mtd <linux-mtd@lists.infradead.org>,
	Mike Rapoport <mike@compulab.co.il>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 1/2] ARM: pxa: remove Compulab pxa2xx boards
Date: Wed, 20 May 2020 12:21:52 +0200	[thread overview]
Message-ID: <87h7waoqin.fsf@belgarion.home> (raw)
In-Reply-To: <CAK8P3a3E=Fq6ZXLkeQgufeJCP0gZiN1uXA2J=HzpH3D49GOMXQ@mail.gmail.com> (Arnd Bergmann's message of "Wed, 13 May 2020 22:39:59 +0200")

Arnd Bergmann <arnd@arndb.de> writes:

> On Wed, May 13, 2020 at 7:01 PM Robert Jarzmik <robert.jarzmik@free.fr> wrote:
>>  CONFIG_MACH_EXEDA=y
>
> CONFIG_MACH_EXEDA should be removed here as well, it refers
> to part of em-x270.c
>
> Similarly, the whole em_x270_defconfig can be removed.
Certainly.

> Now arch/arm/mach-pxa/include/mach/io.h is unused and
> can be removed.
Yes.

> With MACH_ARMCORE gone, the MTD_NAND_CM_X270 and
> PCI_HOST_ITE8152 become impossible to select, and
> a part of PCMCIA_PXA2XX (pxa2xx_cm_x2xx_cs.c) becomes
> unused.
>
> FB_MBX can still be selected, but there are no boards defining
> the platform data any more, so I'd like to remove that as well.
That should be dealt with another time, sorry.

> MACH_EXEDA here is also obsolete, and I'd probably want to
> update the SND_PXA2XX_SOC_EM_X270 dependencies in the
> same patch.
Yes.

>
>> -static struct spi_board_info spi_board_info[] __initdata = {
>> -       [0] = {
>> -               .modalias       = "rtc-max6902",
>> -               .max_speed_hz   = 1000000,
>> -               .bus_num        = 1,
>> -               .chip_select    = 0,
>
> Another last reference, so we can remove that the corresponding driver.
Another patch serie for this as well.

> Same here, there is still one more user left (MACH_ZIPIT2), though
> at some point that might get removed if we decide to drop the handhelds
> with 32MB RAM or less.  That is probably something to be left for
> another time, but I see that pxa_defconfig produces a 9.5MB kernel
> image, so this is getting rather tight, and 32MB wasn't much when this
> got added in 2010.
Yeah, but no PXA user would ever use the pxa_defconfig kernel :)
A typical kernel for a PXA board is right now around 4MB, which is very tight
for 32MB platforms, and just enough for 64MB ones.

Cheers.

-- 
Robert

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