[U-Boot] [PATCH V2 2/2] ARM: tegra: Add p2371-0000 board

[Stephen Warren]

On 08/19/2015 11:41 AM, Stephen Warren wrote:
> On 08/19/2015 07:56 AM, Thierry Reding wrote:
>> On Wed, Jul 29, 2015 at 02:16:33PM -0600, Stephen Warren wrote:
>>> From: Stephen Warren <swarren at nvidia.com>
>>>
>>> Signed-off-by: Stephen Warren <swarren at nvidia.com>
>>> ---
>>> v2: Use named constants for PMIC I2C and register addresses.
>>> ---
>>>   arch/arm/dts/Makefile                              |   1 +
>>>   arch/arm/dts/tegra210-p2371-0000.dts               |  59 +++++
>>>   arch/arm/mach-tegra/tegra210/Kconfig               |   6 +
>>>   board/nvidia/p2371-0000/Kconfig                    |  12 +
>>>   board/nvidia/p2371-0000/MAINTAINERS                |   6 +
>>>   board/nvidia/p2371-0000/Makefile                   |   8 +
>>>   board/nvidia/p2371-0000/p2371-0000.c               |  51 ++++
>>>   board/nvidia/p2371-0000/pinmux-config-p2371-0000.h | 260
>>> +++++++++++++++++++++
>>>   configs/p2371-0000_defconfig                       |  16 ++
> ...
>>
>> Sorry for being late on this. I just rebased my tree on origin/master
>> and got rid of my preliminary P2371 patches in favour of this only to
>> notice that it doesn't work the way it used to. For example I used to
>> use:
>>
>>     # ums 0 mmc 1
>>
>> to upload kernel, DTB and such to the external SD card. Unfortunately
>> that no longer works with this version of the patches. I tried to see
>> what the differences are but couldn't spot anything. I see that dmesg
>> shows a bunch of USB device reset messages, and failures to read the
>> superblock on /dev/sdc, which is what the mass storage shows up as. I
>> also tried porting a couple of changes from my earlier tree over to
>> master, but to no avail.
>>
>> Any ideas what could be the reason here? Does the external SD card work
>> for anybody else?
>
> It certainly did when I tested it. I haven't tested it on this
> particular board since the patch was actually applied though.
>
> A few questions:
>
> - Do regular filesystem commands such as part list, ls, load work on the
> SD card?
>
> - Does ums work on the eMMC but not SD, or fail on both?
>
> Perhaps related: I have just noticed that one of my SD cards works just
> fine in p2371-2180 but the other card doesn't. I swear they both used to
> work. Unfortunately I can't test those cards on p2371-0000 since it has
> a uSD slot instead of full-size. I've also noticed some stability issues
> with "ums" even on the eMMC; basic stuff like the device enumeration and
> various sized dd operations work fine, but mounting filesystems doesn't
> always work. I'll see if I can work out what's up. I wonder if the
> recent T210 clock driver patches had anything to do with this; IIRC they
> didn't exist when I first did all these board ports.

Well, I found what was preventing one of my SD cards from working; the 
fix is:

http://lists.denx.de/pipermail/u-boot/2015-August/224545.html
[PATCH] ARM: tegra: fix PLLP frequency calc on T210

ums is still solid for me with dd but unreliable with mount. Still 
investigating that one.