Will my phone buzz?

Rask Ingemann Lambertsen rask at sygehus.dk
Sun May 3 18:03:57 CEST 2009

On Sun, May 03, 2009 at 02:18:57PM +0300, Shachar Shemesh wrote:

> I'm sorry if I'm asking a silly question. When I do "cat /proc/cpuinfo"  
> I get "Revision: 24420360", so presumably I'm okay. Then again, while  
> trying to figure out what field I was supposed to be looking at, I  
> stumbled upon http://wiki.openmoko.org/wiki/Neo_FreeRunner_Hardware.  
> From there, it seems that the user space gets that data from the kernel, 
> which in turn gets it from the boot loader, which doesn't get it from 
> anywhere at all hardware related.

   It _is_ read from the hardware by the kernel. Please see function
gta02_get_pcb_revision() in arch/arm/mach-s3c2442/mach-gta02.c.

> I have the debug board, which implicitly means I have the screw driver  
> needed to open the device (already did once). I was more looking for  
> something that says "this is the change you need to do in order to fix  
> the buzz", and then just open the device and have a look whether that  
> change is already in place.

   Easy enough. Unscrew the two screws, remove the front cover and check the
area left of the mic. If there isn't a huge (relatively - 3.2 mm by 1.6 mm
or more) capacitor left of or above the small resistors and capacitors, then
you don't have the buzz fix. Examples:


   Note: This does not apply to the GTA02v8 which is buzz-fixed differently.

   Btw, do we really need two wiki pages for the same thing?


Rask Ingemann Lambertsen
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