mirror of
https://github.com/andreili/SBC_builder.git
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40 lines
1.6 KiB
Diff
40 lines
1.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: SuperKali <hello@superkali.me>
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Date: Fri, 7 Mar 2025 15:06:42 +0000
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Subject: drm/rockchip: Set dma mask to 64 bit
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The vop mmu support translate physical address upper 4 GB to iova
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below 4 GB. So set dma mask to 64 bit to indicate we support address
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> 4GB.
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This can avoid warnging message like this on some boards with DDR
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> 4 GB:
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rockchip-drm display-subsystem: swiotlb buffer is full (sz: 266240 bytes), total 32768 (slots), used 130 (slots)
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rockchip-drm display-subsystem: swiotlb buffer is full (sz: 266240 bytes), total 32768 (slots), used 0 (slots)
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rockchip-drm display-subsystem: swiotlb buffer is full (sz: 266240 bytes), total 32768 (slots), used 130 (slots)
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rockchip-drm display-subsystem: swiotlb buffer is full (sz: 266240 bytes), total 32768 (slots), used 130 (slots)
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rockchip-drm display-subsystem: swiotlb buffer is full (sz: 266240 bytes), total 32768 (slots), used 0 (slots)
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---
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drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
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index 111111111111..222222222222 100644
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--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
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+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
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@@ -472,7 +472,9 @@ static int rockchip_drm_platform_probe(struct platform_device *pdev)
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return ret;
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}
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- return 0;
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+ ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(64));
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+
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+ return ret;
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}
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static void rockchip_drm_platform_remove(struct platform_device *pdev)
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--
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Armbian
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