tree 9bce2bbefb9e26a1126c44fb92946e7ddc79da44
parent 0f54b52d38c9ac6715cab2f7248f61f8f753c71d
author developer <developer@mediatek.com> 1678176390 +0800
committer developer <developer@mediatek.com> 1678329173 +0800

[][kernel][common][eth][Add support for coherent DMA]

[Description]
Add support for coherent DMA.

It improves performance by eliminating the need for a cache flush
on rx and tx.
In preparation for supporting WED (Wireless Ethernet Dispatch),
also add a function for disabling coherent DMA at runtime.

This modification refers to Linux upstream patch which came from
Felix Fietkau.
  - https://patchwork.kernel.org/project/linux-mediatek/patch/
20220225101811.72103-2-nbd@nbd.name/

[Release-log]


Change-Id: I1dc9ec636ee0c780d8e8bd59673d36dd6bf1cbdb
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7214683