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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2020/09/09 10:21:08 UTC

[GitHub] [incubator-nuttx] davids5 commented on a change in pull request #1734: Allow dma capable to be permissive

davids5 commented on a change in pull request #1734:
URL: https://github.com/apache/incubator-nuttx/pull/1734#discussion_r485503187



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File path: arch/arm/src/stm32h7/Kconfig
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@@ -1684,6 +1684,16 @@ config STM32H7_DMACAPABLE
 		Drivers then may use this information to determine if they should
 		attempt the DMA or fall back to a different transfer method.
 
+config STM32H7_DMACAPABLE_ASSUME_CACHE_ALIGNED
+	bool "Do not disqualify DMA capability based on cache alignment"
+	depends on STM32H7_DMACAPABLE && ARMV7M_DCACHE && !ARMV7M_DCACHE_WRITETHROUGH
+	default n
+	---help---
+		This option configures the stm32_dmacapable to not disqualify
+		DMA operations on memory that is not dcache aligned based solely
+		on the starting addresss and byte count.
+		Use this when ALL buffer extents are known to be alligned, but the

Review comment:
       @ghn-certi - Thank you for the review. Fixed and force pushed.
   




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