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iommu/mediatek: Set dma_mask for the master devices

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MediaTek iommu arranges dma ranges for all the masters, this patch is to
help them set dma mask. This is to avoid each master setting their own
mask, but also to avoid a real issue, such as JPEG uses
"mediatek,mtk-jpgenc" for 2701/8183/8186/8188, then JPEG could ignore its
different dma_mask in different SoC to achieve common code.

Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230411093144.2690-10-yong.wu@mediatek.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Yong Wu 2023-04-11 17:31:39 +08:00 committed by Joerg Roedel
parent 3df9bdd4ae
commit f7da2da867
1 changed files with 8 additions and 0 deletions
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8
drivers/iommu/mtk_iommu.c
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@ -738,6 +738,14 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
}
mutex_unlock(&data->mutex);
if (region_id > 0) {
ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(34));
if (ret) {
dev_err(m4udev, "Failed to set dma_mask for %s(%d).\n", dev_name(dev), ret);
return ret;
}
}
return mtk_iommu_config(data, dev, true, region_id);
err_unlock: