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authorDaniel Golle <daniel@makrotopia.org>2024-01-24 19:22:09 +0300
committerJakub Kicinski <kuba@kernel.org>2024-01-26 04:20:12 +0300
commitcae1f1c36661f28c92a1db9113961a9ebd61dbaa (patch)
treee177ebef209aedb31a9a81fa61129dbaa01d9d86 /drivers/net
parentd833683d43854ad041ed64fdc175cbd1a19253eb (diff)
downloadlinux-cae1f1c36661f28c92a1db9113961a9ebd61dbaa.tar.xz
net: ethernet: mtk_eth_soc: set DMA coherent mask to get PPE working
Set DMA coherent mask to 32-bit which makes PPE offloading engine start working on BPi-R4 which got 4 GiB of RAM. Fixes: 2d75891ebc09 ("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>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/ethernet/mediatek/mtk_eth_soc.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index a6e91573f8da..de123350bd46 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -4761,7 +4761,10 @@ 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;