Re: Nokia n810 LCD (MIPID/blizzard) on 2.6.38

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Greetings Michael,

On Mon, 28 Feb 2011, Michael Buesch wrote:

> The n810 LCD does not work on the 2.6.38(-rc6) kernel
> due to changes in the OMAP GPIO-hwmod code.
> 
> The hwmod code performs a soft-reset on the GPIO
> module. The first GPIO module carries the MIPID
> "nreset" line, which is toggled due to the hwmod soft reset.
> This resets Blizzard and breaks it, because
> it assumes the LCD was left in the state that the
> bootloader initialized it to:

...

> My temporary workaround to this issue is to disable
> soft reset for the first GPIO module:

...

> I'm wondering if a better fix suitable for the mainline
> kernel inclusion could be found.
> Any ideas?

Perhaps this patch will do:

   http://marc.info/?l=linux-omap&m=129971920806386&w=2

Afterwards, it should be possible to look up the GPIO1 hwmod in 
mach-omap2/board-n8x0.c after the call to 
omap2_init_common_infrastructure(), and then to call 
omap_hwmod_no_setup_reset() on it.  Perhaps you might wish to try it?

...

Thanks for maintaining your N810 pages, they have proven quite useful over 
the years,

MfG,

- Paul
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