net: ethernet: mtk_wed: increase WED v2 WDMA RESV_BUFF to 0x80

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Change WDMA RESV_BUFF from 0x40 to 0x80 to avoid CDM TX FIFO overflow.
Without this patch mt7986 and mt7981 may have WDMA TX hang issue. This
patch was pulled from mtk-openwrt-feeds GPL open source project.

Link: 07c87502e8
Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/OSZPR01MB779537889255E2F606E47EABBCA52@OSZPR01MB7795.jpnprd01.prod.outlook.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Shiji Yang 2026-08-19 21:07:07 +08:00 • committed by Jakub Kicinski

parent 7cbfb18094

commit c0ef04232f

2 changed files with 6 additions and 0 deletions

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5

drivers/net/ethernet/mediatek/mtk_wed.c

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1

drivers/net/ethernet/mediatek/mtk_wed_regs.h

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