On Monday 12 October 2015 11:25 AM, Muni Sekhar wrote:
Hi ,
I tried to use the MMC host test driver (mmc_test.ko) for testing SD
Host controller hardware. When I load the driver I noticed that
mmc_test_probe() not getting called.
Could anyone specify the exact usage of mmc_test.ko?
Hello Muni Sekhar,
I think the following might help you in using MMC_TEST.KO Module
0. insmod mmc_test.ko
1. unbind the mmc block driver
echo mmc0:b368 > /sys/bus/mmc/drivers/mmcblk/unbind
2. bind the mmc_test driver
echo mmc0:b368 > /sys/bus/mmc/drivers/mmc_test/bind
3. mount the debugfs if you don't mount for debugfs
mount -t debugfs none /sys/kernel/debug
4. After mount, you can see the "/sys/kernel/debug/mmc0/mmc0:b368/test"
5. echo "test number" > /sys/kernel/debug/mmc0/mmc0\:b368/test
you can see the "test number" using the "cat
/sys/kernel/debug/mmc0/mmc0\:b368/testlist"
The above has been copied straigtly from thelink
<http://forum.kernelnewbies.org/read.php?12,1991,116405#msg-116405>
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