drm/etnaviv: set up initial PULSE_EATER register

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Set up the PULSE_EATER register (0x0010C) in etnaviv_gpu_hw_init. This
ports three mostly undocumented model/revision-specific register
overrides from the Vivante kernel driver.

This is relevant as at least the "disable internal DFS" for revisions >
0x5420 has shown to have a huge impact on shader performance (sped up
memory read performance by 7.5x and write performance by 1.5x) on an
affected GPU.

Signed-off-by: Wladimir J. van der Laan <laanwj@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

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Wladimir J. van der Laan 2016-12-15 13:11:30 +01:00 • committed by Lucas Stach

parent a1540a7fa4

commit e17a0ded5c

1 changed files with 34 additions and 0 deletions

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drivers/gpu/drm/etnaviv/etnaviv_gpu.c

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