Make bcm2835-mmc compatible with swiotlb that is used on ARM64 #3159
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swiotlb (256K). This resolves swiotlb buffer full errors on Wi-Fi bursts on Raspberry PI4 in 64-bit mode. Signed-off-by: Yaroslav Rosomakho <[email protected]>
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This fixes #3157 for me and should fix #3114 I guess more efficient solution would be to implement proper IOMMU support instead of relying on swiotlb bouncing but that needs a lot more investigation. |
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After stress testing wifi for 12+ hours it did eventually fail again. So, closing this PR. |
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This resolves swiotlb buffer full errors on Wi-Fi bursts on
Raspberry PI4 in 64-bit mode.
Signed-off-by: Yaroslav Rosomakho [email protected]