Ard Biesheuvel ard.biesheuvel@linaro.org writes:
The 100c08 scratch page is mapped using dma_map_page() before the TTM layer has had a chance to set the DMA mask. This means we are still running with the default of 32 when this code executes, and this causes problems for platforms with no memory below 4 GB (such as AMD Seattle)
So move the dma_map_page() to the .init hook, and set the streaming DMA mask based on the MMU subdev parameters before performing the call.
Signed-off-by: Ard Biesheuvel ard.biesheuvel@linaro.org
Hi Ard,
Thanks for posting this patch.
With the patch, I am able to see console output on a screen attached to the NVS 300 PCIe card in an AMD Seattle system. It was failing with a message similar to what you've posted below.
For some reason, X refuses to start up but that, I think, is a problem with my userspace setup.
Cheers, Punit
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