Re: [PATCH 1/3] OMAP: control: add functions for DSP boot address/mode control

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On Tue, Oct 12, 2010 at 12:35 AM, Paul Walmsley <paul@xxxxxxxxx> wrote:
> On Mon, 11 Oct 2010, Tony Lindgren wrote:
>> Would be nice to get the dspbridge into working shape. Sounds we still
>> need the following:
>>
>> - memblock fixes
>> - this series to fix the control module related issues
>> - platform data for the boards
>>
>> Is that all, or are we also missing something else?
>
> A few other things should be done also.
>
> 1. Most of the code in drivers/staging/tidspbridge/code/tiomap3430.c in
> the bridge_brd_monitor(), bridge_brd_start(), and bridge_brd_stop() should
> be moved into a file in arch/arm/mach-omap2. ÂThe DSPBridge driver should
> call those functions (to reset the DSP, start it, etc.) through
> platform_data function pointers. ÂOnce that happens, patch 3 of the
> control module-related series would not be needed, since that code would
> be in arch/arm/mach-omap2 anyway.
>
> 2. The direct CM/PRM/RM register access should be removed from that
> arch/arm/mach-omap2 code. ÂThat should be handled directly by the
> clock/hwmod/whatever code.
>
> 3. DSPBridge should be converted to use PM runtime, and the
> arch/arm/mach-omap2 portion should use omap_device, omap_hwmod, etc.

Before starting to clean things up, I would rather have something that
works, which AFAIK includes:

 1) revert or fix iommu migration
 2) fix ioremap() usage on RAM

Only then we can have some minimal confidence that the cleaning up is
not introducing further breakage.

-- 
Felipe Contreras
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