Re: OMAP4 errata i740

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



+ Kevin

On Friday 30 March 2012 01:56 PM, Tomi Valkeinen wrote:
> On Fri, 2012-03-30 at 13:51 +0530, Shilimkar, Santosh wrote:
>> On Fri, Mar 30, 2012 at 1:37 PM, Tomi Valkeinen <tomi.valkeinen@xxxxxx> wrote:
> 
>>> All OMAP4 versions seem to be affected. I couldn't find a mention about
>>> this in the mainline kernel. Any ideas how and where this should be
>>> fixed?
>>>
>> It's not patched for mainline. Generally clock-domain code
>> is abstracted from drivers but considering the errata and affected
>> modules, I guees it should be handled by DSS driver
>> since that is where the state of DSS or ISS will be known. Note
>> ISS will be automatically taken care since it will always use disaplay.
>>
>> In internal tree's this was handled as part of DSS early suspend/resume
> 
> That version doesn't work as it uses functions that are not exported to
> drivers.
> 
> I don't know much about the clock domain code, but I hope there's a way
> to handle it there. Otherwise I guess I need to add a new set of
> platform callback functions, so that the dss driver can call
> arch/arm/mach-omap2 code to enable and disable the work-around. I
> dislike that because I'm currently trying to remove those kinds of hacks
> to make dss work better with DT =).
> 
I agree. In fact I faced similar issue when I briefly tried moving
OMAP cpuidle code to drivers/idle/*.

That time me and Kevin concluded that till we move the powerdomain,
clockdomain code to drivers/* and export it, the cpuidle movement
needs to be deferred.

Regards
Santosh


--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux Arm (vger)]     [ARM Kernel]     [ARM MSM]     [Linux Tegra]     [Linux WPAN Networking]     [Linux Wireless Networking]     [Maemo Users]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux