Re: [PATCH v4,3/6] media: mtk-vcodec: Support 4GB~8GB range iova space for venc
From: Tzung-Bi Shih <hidden>
Date: 2021-05-21 08:06:29
Also in:
linux-arm-kernel, linux-media, linux-mediatek, lkml
On Fri, May 21, 2021 at 3:02 PM Irui Wang [off-list ref] wrote:
+ if (of_get_property(pdev->dev.of_node, "dma-ranges", NULL)) + dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(34)); +
From your previous dt-bindings patch[1], it has 4 banks.
0~4G; 4G~8G; 8G~12G; 12G~16G.
But, the code treats it as a boolean. I.e. 0~4GB if non-existent; otherwise, 4GB~8GB. [1]: https://patchwork.linuxtv.org/project/linux-media/patch/20210521070139.20644-3-irui.wang@mediatek.com/