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[ts-7000] Re: kernel 2.6.27.4 for TS-72XX [take1]

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Subject: [ts-7000] Re: kernel 2.6.27.4 for TS-72XX [take1]
From: "charliem_1216" <>
Date: Mon, 17 Nov 2008 15:47:08 -0000
--- In  Matthieu <> wrote:
>
> Hi Marco,
> 
> Thanks for your feedback, I didn't know for ARCH_HAS_FLATMEM_HOLES,
I will
> have a look.

First, let me say thanks for trying to keep up support for TS-72xx in
newer kernels!  I read about the plan for moving away from discontimem
on the LAKML, and wondered how the TS boards would fare.  

You probably already know this, but the discontigmem patch is only
needed if the TS board has 64M or more of RAM.  More background is
here and following threads:
http://www.freelists.org/post/linux-cirrus/bootmem-init-node-failure-with-64M-TS7250,6

Quoting from Lennert Buytenhek (ep93xx maintainer):

"The problem here is that Linux 2.6 ep93xx port is somewhat naive and
expects all RAM to be within a 1G physical address range.  This isn't
always true on ep93xx hardware (such as your board), but it _is_ true
for all ep93xx hardware I have access to (for example, I have the 32M
variant of the TS7250), so I never fixed the problem, even though Linux
supports not having all RAM within a 1G range just fine."

This previous discussion is what helped Breton Saunders generate the
original discontigmem patch for TS boards, so perhaps it will help
going forward with SPARSEMEM and ARCH_HAS_FLATMEM_HOLES.

Regards, ........ Charlie

> Concerning LEDS and I2C driver, I will move them to generic GPIO
driver in
> the next patch release.
> 
> Concerning 00-1-ep93xx_gpio_fix.patch
> It fixes two bugs present in 2.6.27.4.
> Interrupt enable register offset for port F is wrong (it 0x58 not 0x5C).
> 
> Regards,
> Matthieu
>



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