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net: ethernet: mtk_eth_soc: set DMA coherent mask to get PPE working

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[ Upstream commit cae1f1c366 ]

Set DMA coherent mask to 32-bit which makes PPE offloading engine start
working on BPi-R4 which got 4 GiB of RAM.

Fixes: 2d75891ebc ("net: ethernet: mtk_eth_soc: support 36-bit DMA addressing on MT7988")
Suggested-by: Elad Yifee <eladwf@users.github.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Link: https://lore.kernel.org/r/97e90925368b405f0974b9b15f1b7377c4a329ad.1706113251.git.daniel@makrotopia.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Daniel Golle 2024-01-24 16:22:09 +00:00 committed by Greg Kroah-Hartman
parent f08daa806b
commit 01b4ae7e15
1 changed files with 4 additions and 1 deletions
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5
drivers/net/ethernet/mediatek/mtk_eth_soc.c
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@ -4757,7 +4757,10 @@ static int mtk_probe(struct platform_device *pdev)
}
if (MTK_HAS_CAPS(eth->soc->caps, MTK_36BIT_DMA)) {
err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(36));
err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(36));
if (!err)
err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
if (err) {
dev_err(&pdev->dev, "Wrong DMA config\n");
return -EINVAL;