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From: Husam <husamsenussi@gmail.com>
To: linux-omap-open-source@linux.omap.com
Subject: Reading/Writing to MMC without interrupt handler
Date: Sat, 1 Apr 2006 13:04:36 +0100	[thread overview]
Message-ID: <200604011304.36250.husamsenussi@gmail.com> (raw)

Hi,

I guess this stupid question, but I'm going to asked anyway :)

I'm adding ipaq h6300 support to u-boot which based OMAP1510 processer, I want 
to allow u-boot to load an kernel image from MMC/SD card.

I did make the changes but I'm having problem reading from the MMC card 
(Getting Data Timeout) ,

At the moment I'm polling for the status without using irq, and that seems to 
work for configuring the card and reading manufacturer information like date, 
serial number  etc.

mca_vsn : 03
cmdclass : 1F5
tacc_clks: 00
tacc_ns  : 4C4B400
max_dtr  : 1312D00
read_blkbits: 9
capacity    : 1003520
Manufacturer ID = 0000049A
HW/FW Revision = 0 0
Product Name = MMC
Serial Number = 0000049a
Month = 12
Year = 2004

My question is it passible to do that without having to enable irq and using 
interrupt handler?

Thanks 

             reply	other threads:[~2006-04-01 12:04 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-04-01 12:04 Husam [this message]
2006-04-03 14:24 ` Reading/Writing to MMC without interrupt handler Tony Lindgren
2006-04-03 20:52   ` Husam

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