On Thu, Nov 3, 2016 at 8:55 AM, Gary Thomas <[email protected]> wrote:
> On 2016-11-03 14:38, Robert Nelson wrote:
>>
>> On Thu, Nov 3, 2016 at 7:26 AM, Gary Thomas <[email protected]> wrote:
>>>
>>> On my BeagleBoneBlack with a system installed in eMMC, I get
>>> different device names for the MMC devices, depending on whether
>>> or not there is a SD card installed at boot time.
>>>
>>> With SD card installed:
>>>   MMC/SD slot = mmcblk0
>>>   eMMC = mmcblk1
>>>
>>> Without SD card installed (at boot):
>>>   MMC/SD slot = mmcblk1 if inserted after boot
>>>   eMMC = mmcblk0
>>>
>>> Is there some way to configure this to be consistent?  i.e.
>>>   MMC/SD slot = mmcblk0 (regardless of the presence of an SD card)
>>>   eMMC = mmcblk1
>>> which matches the device enumeration in U-Boot?
>>>
>>> If not, what's the rationale behind the madness?
>>
>>
>> First valid device probed is mmc0...
>>
>> This changed in v4.5.x/v4.6.x timeframe and we backported it to v4.4.x.
>
>
> Do you recall the changeset, in case I'd like to undo it?  I'm trying
> to make the BBB behave like all the other platforms I support.
>
> Thanks for any pointers

For our "v4.4.x-ti" just revert:

https://github.com/RobertCNelson/ti-linux-kernel-dev/blob/ti-linux-4.4.y/patches/x15/fixes/0004-mmc-block-Use-the-mmc-host-device-index-as-the-mmcbl.patch

On mainline (v4.5.x+): either get use to it, or revert:

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/mmc/core?id=520bd7a8b4152aacfbd34eb7f7a447354b631039
&
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/mmc?id=9aaf3437aa72ed5370bf32c99580a3fa2c330e3d

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

-- 
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