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Subject: Re: Old regression with MTD devices disappearing from a Kurobox HD/HG
From: Scott Wood <scottwood@freescale.com>
To: =?ISO-8859-1?Q?Rog=E9rio?= Brito <rbrito@ime.usp.br>
Date: Thu, 16 Apr 2015 19:03:00 -0500
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On Thu, 2015-04-16 at 21:01 -0300, Rogério Brito wrote:
> Dear Scott.
> 
> On Apr 16 2015, Scott Wood wrote:
> > On Thu, 2015-04-16 at 19:55 -0300, Rogério Brito wrote:
> > > Is there any "proper" way for me to discover what device name the kernel
> > > uses? I have tried the following command lines without success:
> > > 
> > > 1 - mtdparts=myflash:4096k(allflash),3072k(firmimg),448k@3072k(bootcode),64k@3520k(status),512k@3584k(conf)
> > > 2 - mtdparts=physmap-flash:3072k(firmimg),448k@3072k(bootcode),64k@3520k(status),512k@3584k(conf)
> > > 3 - mtdparts=cfi_cmdset_0002:3072k(firmimg),448k@3072k(bootcode),64k@3520k(status),512k@3584k(conf)
> > 
> > Look in sysfs.
> 
> The output that I get from sysfs is:
> 
>     # ls -l /sys/block/mtdblock0
>     lrwxrwxrwx 1 root root 0 Apr 16 20:42 /sys/block/mtdblock0 -> ../devices/platform/physmap-flash.0/mtd/mtd0/mtdblock0
>     # cat /sys/devices/platform/physmap-flash.0/uevent
>     DRIVER=physmap-flash
>     MODALIAS=platform:physmap-flash
>     # cat /sys/devices/platform/physmap-flash.0/driver_override
>     (null)
> 
> So, it is saying that the driver is physmap-flash, right?

It looks like the device name is "physmap-flash.0".  You're partitioning
the device, not the driver.

-Scott