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List:       linux-ide
Subject:    Re: [PATCH 1/1] AVR32 PATA driver
From:       Jeff Garzik <jeff () garzik ! org>
Date:       2007-08-31 9:38:40
Message-ID: 46D7E1A0.2050002 () garzik ! org
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Kristoffer Nyborg Gregertsen wrote:
> Updated and simplified driver. Use only register transfer timing for both
> data and register transfers. This gives poorer performance in PIO1 and 2,
> but should not be a problem in PIO3 and 4, correct me if I'm wrong :)
> 
> The driver works very we'll but I still wonder about the interrupts. I have
> an interrupt line, that works nicely when POLLING flag is not set. The
> problem is the number of interrupts that eat away my CPU cycles.
> 
> When using the POLLING flag there seem to be some interrupts that dosen't get
> cleared. Furthermore the device dosen't drive INTRQ high, it stays at 2.5 volts
> and generates a lot of interrupts due to ripple / noise. What to do?
> 
> Signed-off-by: Kristoffer Nyborg Gregertsen <kngregertsen@norway.atmel.com>

applied


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