Hi Lucas,
we tested your patch on PHYTEC i.MX6Q phyCORE with 1GiB and 2GiB RAM variants.
I can happily report that the previous issues with "command buffer outside
valid memory window" are gone when using kernel's cmdline parameter cma=256M
for example!
If you want you can add:
Tested-by: Primo
Am Mo., 3. Mai 2021 um 12:24 Uhr schrieb Lucas Stach :
>
> The current calculation based on the required_dma mask can be significantly
> off, so that the linear window only overlaps a small part of the DRAM
> address space. This can lead to the command buffer being unmappable, which
> is obviously
The current calculation based on the required_dma mask can be significantly
off, so that the linear window only overlaps a small part of the DRAM
address space. This can lead to the command buffer being unmappable, which
is obviously bad.
Rework the linear window offset calculation to be based on
The current calculation based on the required_dma mask can be significantly
off, so that the linear window only overlaps a small part of the DRAM
address space. This can lead to the command buffer being unmappable, which
is obviously bad.
Rework the linear window offset calculation to be based on
