Hi,
Hi,
[...]
+/*
+ * We have seen MMC DMA transfers read corrupted data from SDRAM
when a burst
+ * interval ends at physical address 0x1000. To avoid this
problem, we
+ * remove the final page of low memory from the memory map.
+ */
+void __init jz4770_reserve_unsafe_for_dma(void
Hi Paul,
On 2 January 2018 at 20:38, Paul Cercueil wrote:
> From: Maarten ter Huurne
>
> We have seen MMC DMA transfers read corrupted data from SDRAM when
> a burst interval ends at physical address 0x1000. To avoid this
> problem, we remove the final page of low memory from the memory map.
From: Maarten ter Huurne
We have seen MMC DMA transfers read corrupted data from SDRAM when
a burst interval ends at physical address 0x1000. To avoid this
problem, we remove the final page of low memory from the memory map.
Signed-off-by: Maarten ter Huurne
---
arch/mips/jz4740/setup.c |
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