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VC4 GPU Build
Peter Yoon edited this page Mar 29, 2016
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Raspberry Pi 2 default build is now VC4 GPU enabled.
Follow README of https://github.com/peyo-hd/local_manifests & https://github.com/peyo-hd/device_brcm_rpi2
For vc4 original work of Eric Anholt, refer to http://dri.freedesktop.org/wiki/VC4 And his github : https://github.com/anholt
Among 1GB DRAM on Rpi2 board, amount of GPU side memory could be changed with CONFIG_CMA_SIZE_MBYTES in the file - kernel/rpi/arch/arm/configs/bcm2709_defconfig
Current value is 256. It could be increased to 320 or more. But there is critical side-effect of ARM side memory reduction. Android could suffer from frequent Out-of-Memory.