[PATCH v2 09/14] media: mediatek: vcodec: support 36bit iova address
From: Yunfei Dong <yunfei.dong@mediatek.com>
Date: 2025-08-15 08:53:00
Also in:
linux-devicetree, linux-media, linux-mediatek, lkml
Subsystem:
media input infrastructure (v4l/dvb), mediatek media driver, the rest · Maintainers:
Mauro Carvalho Chehab, Tiffany Lin, Andrew-CT Chen, Yunfei Dong, Linus Torvalds
Need to set dma mask to support 36bit iova address for decoder hardware can use 36bit address to decode for mt8196. Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com> --- .../platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.c
index 5e312f86e652..fabf969bc8a9 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.c@@ -388,6 +388,13 @@ static int mtk_vcodec_probe(struct platform_device *pdev) return -ENODEV; } dma_set_max_seg_size(&pdev->dev, UINT_MAX); + if (dev->chip_name == MTK_VDEC_MT8196) { + ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(36)); + if (ret) { + dev_err(&pdev->dev, "Failed to enable 36-bit DMA: %d\n", ret); + return ret; + } + } dev->fw_handler = mtk_vcodec_fw_select(dev, fw_type, DECODER); if (IS_ERR(dev->fw_handler))
--
2.45.2