Re: [PATCH] ARM: omap4: gpio: fix setting IRQWAKEN bits

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

 



On Mon, Jun 06, 2011 at 03:32:29PM -0700, Kevin Hilman wrote:
> Colin Cross <ccross@xxxxxxxxxxx> writes:
> 
> > On Sat, Jun 4, 2011 at 12:03 PM, Colin Cross <ccross@xxxxxxxxxxx> wrote:
> >> Setting the IRQWAKEN bit was overwriting previous IRQWAKEN bits,
> >> causing only the last bit set to take effect, resulting in lost
> >> wakeups when the GPIO controller is in idle.
> >>
> >> Replace direct writes to IRQWAKEN with writes to SETWKUENA and
> >> CLEARWKUEN.
> >>
> >> Signed-off-by: Colin Cross <ccross@xxxxxxxxxxx>
> 
> [...]
> 
> >
> > Todd pointed out that the OMAP4 TRM says not to use SETWKUENA and
> > CLEARWKUENA.  
> 
> In my GPIO cleanups, I was wondering why the set/clear registers were
> not used here. Todd, can you give the TRM version & reference for this?
> I didn't find anything after a quick scan/search.

http://focus.ti.com/general/docs/wtbu/wtbudocumentcenter.tsp?templateId=6123&navigationId=12037

OMAP4460 Multimedia Device Silicon Revision 1.0 Version E
February 2011âRevised May 2011

p. 5357 Table 25-68. GPIO_CLEARWKUPENA

"Caution: This register is kept for backward software compatibility. Use
GPIO_IRQWAKEN_0 and GPIO_IRQWAKEN_1 instead."

OMAP4430 TRM is similar.


Todd
--
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