[Gta04-owner] gta04 hardware revision -- how to check?
Dr. H. Nikolaus Schaller
hns at goldelico.com
Thu Jan 17 20:19:16 CET 2013
Am 17.01.2013 um 20:09 schrieb Orest Tarasiuk:
> All right, dmesg on Debian says "Machine: GTA04 (3019)". Is this the line you meant?
No, this is just the machine identifier (ARM).
Should look like this:
[ 0.000000] Revision GTA04A4
I don't know if it is only printed on the hw-validation kernel.
> 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:
>>>> 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.
>>> Gta04-owner mailing list
>>> Gta04-owner at goldelico.com
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Gta04-owner