----- Original Message -----
From: "Premi, Sanjeev" <pr...@ti.com>
To: <linux-omap@vger.kernel.org>
Sent: Thursday, November 26, 2009 10:32 PM
Subject: omap3evm: touchscreen delays on pm branch
Hi,
I am finding the response of touchscreen on the omap3evm very slow.
Here is my test:
On console, I run : watch -n2 "cat /proc/interrupts"
Then, I tap the touchscreen approximately once per second. However,
(usually) no interrupts are registered. As I increase the frequency
of 'taps' more and more interrupts are registered. But still not
matching exact taps.
However, when I keep the cpu busy with "cat /dev/zero > /dev/null &"
each tap is recognized.
EVM uses GPIO175 for touchscreen. I notice that Zoom2 uses GPIO102.
Both are not on BANK0.
Is the behavior same on ZOOM2 as well?
I dont see this problem on Zoom2/Zoom3, I am able to see interrupts being
incremented for every touch.
Best regards,
Sanjeev
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