[Gta04-owner] gta04 hardware revision -- how to check?

Orest Tarasiuk orest.tarasiuk at tum.de
Thu Jan 17 20:10:40 CET 2013


All right, dmesg on Debian says "Machine: GTA04 (3019)". Is this the
line you meant?

//

//
On 17/01/13 19:50, Orest Tarasiuk wrote:
> OK, thank you for the fast and thorough answer! :)
>
>
>
> //
> On 17/01/13 18:17, Dr. H. Nikolaus Schaller wrote:
>> Hi Orest,
>>
>> Am 17.01.2013 um 17:59 schrieb Orest Tarasiuk:
>>
>>> Hi!
>>>
>>> Just a short question: does anyone know a quick way to check the hardware revision of a gta04?
>> Short question usually lead to long answers :)
>>
>> The easiest way is to directly look at the board.
>>
>> It is intentionally not made easy to directly read the hardware version... Because it is too
>> tempting to base user space code on that.
>>
>> The better solution is to base user space code on existence of features, i.e. the
>> hw-revision is hidden by the kernel and indirectly shown.
>>
>> And, there may be board revisions with different components installed/not installed.
>> They all have the same revision code. So it is more a PCB layout version code which
>> indicates different wiring options. Not necessarily what the board has or does not
>> have installed.
>>
>> I am not sure which kernel you use, but the set of GPIOs presented in /sys differs
>> between A3 and A4. Especially the one to control the UMTS modem.
>>
>> That said, there is code in the hw-validation kernel that prints the board version
>> to the initial lines of dmesg. So you can boot and then just dmesg | more.
>>
>> BR,
>> Nikolaus
>>
>> _______________________________________________
>> Gta04-owner mailing list
>> Gta04-owner at goldelico.com
>> http://lists.goldelico.com/mailman/listinfo/gta04-owner
>

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