| Message ID | 20211022092827.24631-4-roy-cw.yeh@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add additional setting and performance tuning | expand |
Il 22/10/21 11:28, roy-cw.yeh ha scritto: > From: "Roy-CW.Yeh" <roy-cw.yeh@mediatek.com> > > Use the dma_set_mask_and_coherent helper to set mdp > DMA bit mask to support 34bits iova space(16GB) that > the mt8195 iommu HW supports. > > The whole iova range separates to 0~4G/4G~8G/8G~12G/12G~16G. > Regarding which iova range mdp actually locates, > it depends on the dma-ranges property of mdp dtsi node. > > Signed-off-by: Roy-CW.Yeh <roy-cw.yeh@mediatek.com> Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> > --- > drivers/media/platform/mtk-mdp3/mtk-mdp3-core.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/media/platform/mtk-mdp3/mtk-mdp3-core.c b/drivers/media/platform/mtk-mdp3/mtk-mdp3-core.c > index 12b029d145d6..51f7ef2b31ce 100644 > --- a/drivers/media/platform/mtk-mdp3/mtk-mdp3-core.c > +++ b/drivers/media/platform/mtk-mdp3/mtk-mdp3-core.c > @@ -1141,6 +1141,9 @@ static int mdp_probe(struct platform_device *pdev) > mdp->pdev = pdev; > mdp->mdp_data = of_device_get_match_data(&pdev->dev); > > + if (of_get_property(pdev->dev.of_node, "dma-ranges", NULL)) > + dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(34)); > + > ret = of_property_read_u32(dev->of_node, "mediatek,mdp3-id", &id); > if (ret) { > dev_err(dev, "Failed to get mdp-id\n"); >
diff --git a/drivers/media/platform/mtk-mdp3/mtk-mdp3-core.c b/drivers/media/platform/mtk-mdp3/mtk-mdp3-core.c index 12b029d145d6..51f7ef2b31ce 100644 --- a/drivers/media/platform/mtk-mdp3/mtk-mdp3-core.c +++ b/drivers/media/platform/mtk-mdp3/mtk-mdp3-core.c @@ -1141,6 +1141,9 @@ static int mdp_probe(struct platform_device *pdev) mdp->pdev = pdev; mdp->mdp_data = of_device_get_match_data(&pdev->dev); + if (of_get_property(pdev->dev.of_node, "dma-ranges", NULL)) + dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(34)); + ret = of_property_read_u32(dev->of_node, "mediatek,mdp3-id", &id); if (ret) { dev_err(dev, "Failed to get mdp-id\n");