Video Core IV Driver

[andyrblank]

Just in case anyone hasn't thought of this (and when I get back home to my RPi I may try it) but has anyone thought of trying to use the Android GPU driver from a Samsung Galaxy Y rom? It uses a different Broadcom SOC but has the same Videocore IV GPU.

http://geekyzz.blogspot.com/2013/03/Ins ... S5360.html

http://wiki.cyanogenmod.org/w/Unofficia ... T-S5360.29

[jamesh]

Galaxy Y doesn't use a Videocore GPU....

There are SS phones that do, but they use a different build which won't match the Raspi userland code.

[andyrblank]

Galaxy Y doesn't use a Videocore GPU....

There are SS phones that do, but they use a different build which won't match the Raspi userland code.

Both of these site say the Samsung Galaxy Y does use a VideoCore IV GPU:

http://en.wikipedia.org/wiki/Samsung_Galaxy_Y

http://en.wikipedia.org/wiki/VideoCore

[jamesh]

Galaxy Y doesn't use a Videocore GPU....

There are SS phones that do, but they use a different build which won't match the Raspi userland code.

Both of these site say the Samsung Galaxy Y does use a VideoCore IV GPU:

http://en.wikipedia.org/wiki/Samsung_Galaxy_Y

http://en.wikipedia.org/wiki/VideoCore

Ah, OK, that's using a separate GPU chip, the 2763 - unlike the 2835 and recent SS phones where the Arm and GPU are on the same die, in the Galaxy Y case, the Arm and the GPU are separate chips (very similar to the Nokia 808 and associated devices). I didn't work on that one, so wasn't aware it used the VC, and given the specs, they really don't take full advantage! In fact, looking at the specs one wonders whether it really does use the VC4, since they use none of its main features. I'll ask around!

Firmware even less likely to work on the Raspi though!

[jamesh]

In reply to myself - the VC4 in the Galaxy Y is a very much cut down version of the standard VC4, so it has a very low performance in comparison with the full spec device. It's done to reduce die size and hence reduce cost. That explains the low specs of the Y in comparison to full VC4 based devices.

[andyrblank]

In reply to myself - the VC4 in the Galaxy Y is a very much cut down version of the standard VC4, so it has a very low performance in comparison with the full spec device. It's done to reduce die size and hence reduce cost. That explains the low specs of the Y in comparison to full VC4 based devices.

Thank you for the information James. About the SS Phones that you referred to can you tell me more about those or do you have a link to their website?

[jamesh]

These both use the Videocore 4 (this information is publicly available)

Samsung Galaxy Grand Duos
Samsung Galaxy S2 Plus

[andyrblank]

These both use the Videocore 4 (this information is publicly available)

Samsung Galaxy Grand Duos
Samsung Galaxy S2 Plus

Thank you. I didn't catch at first that SS meant SamSung. I thought it was a carrier I'd never heard of before.