Re: [PATCH 3/3] drm/etnaviv: use a 32 bit mask as coherent DMA mask

Am 2021-08-26 14:10, schrieb Michael Walle:

The STLB and the first command buffer (which is used to set up the TLBs) has a 32 bit size restriction in hardware. There seems to be no way to specify addresses larger than 32 bit. Keep it simple and restict the addresses to the lower 4 GiB range for all coherent DMA memory allocations.

Signed-off-by: Michael Walle michael@walle.cc

Suggested-by: Lucas Stach l.stach@pengutronix.de

is missing here. sorry, will add it in the next version.

-michael