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drm/rockchip: assign drm device dma_mask to mask(64) from mask(32)

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dma framework use dma_mask to check device if dma_capable, so set
dma_mask to mask(64) to compatible with platform that ddr capacity
larger than 4GB or physical address space beyond 32 bit.

Change-Id: I04cbe038402db6b48ef2b36a9494fc8eb8c98d6c
Signed-off-by: Simon Xue <xxm@rock-chips.com>
This commit is contained in:
Simon Xue
2021-10-20 10:13:42 +08:00
committed by Tao Huang
parent 049dac47fb
commit b3ed01278c
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/rockchip/rockchip_drm_drv.c
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@@ -1327,7 +1327,10 @@ static int rockchip_drm_platform_probe(struct platform_device *pdev)
rockchip_drm_match_remove(dev);
return ret;
}
dev->coherent_dma_mask = DMA_BIT_MASK(64);
ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(64));
if (ret)
return ret;
return 0;
}