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Graphics, sound and multimedia • Map of RPi5 HVS registers

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Hi,

I'm trying to control the GPU's HVS module by writing directly to memory. An approach to this is described here - https://blog.benjdoherty.com/2019/05/21 ... splay-List - though in my case I plan do it via /dev/mem since I'm using Linux.

I can't find any documentation on the HVS's registers or glean anything (other than a handful of addresses for the scaling settings) from the Linux source: https://github.com/torvalds/linux/blob/ ... vc4_regs.h.

The best I can do via the pseudo filesystems is:

Code:

sudo cat /proc/iomem
which gives me the following:

Code:

...107c501000-107c50101f : 107c501000.moplet moplet@7c501000107c580000-107c599fff : 107c580000.hvs hvs@107c580000107c700000-107c70000f : 107c700000.clock clock@7c700000...
So clearly there's quite a lot to map.

Can anyone offer any help?

Thanks.

Statistics: Posted by Moocrow — Mon Aug 05, 2024 3:51 pm — Replies 0 — Views 11



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