[U-Boot] [PATCH 13/14] ARM: AM43xx: GP_EVM: Add support for DDR3

[Sekhar Nori <nsekhar@ti.com>]

Hi Vaibhav,

On 11/13/2013 7:38 PM, Vaibhav Bedia wrote:
> On Wed, Nov 13, 2013 at 3:48 AM, Lokesh Vutla <lokeshvutla@ti.com> wrote:
> [...]
>> I checked with hardware folks. There is no register or some way to tell
>> if VTT is present. It is not added in EEPROM also and I have no answer why it
>> is not added in EEPROM..:(
>> It is specific to boards using DDR3. So its good to have it in board files as I did it here
>> instead of adding this check in emif file.
> 
> That EEPROM is clearly not getting used the way i think it should be :\
> I would have made a lot of noise to get details like this added there.

The EEPROM was designed as a way to differentiate between different TI
EVMs, not as a generic way to differentiate between various possible
board hook-ups. Even if we did define it that way, why would all boards
using AM437x have an onboard EEPROM?

We could request this information be placed in EEPROM and see if
hardware folks oblige, but I don't see how that's going to be used
beyond TI EVMs.

Thanks,
Sekhar