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fix(boards/ark): exclude DTCM from heap on H7 boards (#27312)

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Set CONFIG_STM32H7_DTCMEXCLUDE=y on the four STM32H7 ARK boards
(fmu-v6x, fmu-v6s, fpv, pi6x) so DTCM is no longer part of the kernel
heap. Stacks and dynamic buffers can otherwise land in DTCM, which AHB
DMA masters (SDMMC IDMA, MDMA, BDMA, DMA1/2) cannot access, causing file
operations to fail with EIO/ETIMEDOUT.

Refs PX4/PX4-Autopilot#27242.
This commit is contained in:
Jacob Dahl
2026-05-15 21:41:44 -04:00
committed by GitHub
parent 4eccdf9a9c
commit 6900fe621c
4 changed files with 4 additions and 0 deletions
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boards/ark/fmu-v6s/nuttx-config/nsh/defconfig
+1
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@@ -232,6 +232,7 @@ CONFIG_STM32H7_BKPSRAM=y
CONFIG_STM32H7_DMA1=y
CONFIG_STM32H7_DMA2=y
CONFIG_STM32H7_DMACAPABLE=y
CONFIG_STM32H7_DTCMEXCLUDE=y
CONFIG_STM32H7_ETHMAC=y
CONFIG_STM32H7_FLASH_OVERRIDE_I=y
CONFIG_STM32H7_FLOWCONTROL_BROKEN=y
boards/ark/fmu-v6x/nuttx-config/nsh/defconfig
+1
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@@ -232,6 +232,7 @@ CONFIG_STM32H7_BKPSRAM=y
CONFIG_STM32H7_DMA1=y
CONFIG_STM32H7_DMA2=y
CONFIG_STM32H7_DMACAPABLE=y
CONFIG_STM32H7_DTCMEXCLUDE=y
CONFIG_STM32H7_ETHMAC=y
CONFIG_STM32H7_FLASH_OVERRIDE_I=y
CONFIG_STM32H7_FLOWCONTROL_BROKEN=y
boards/ark/fpv/nuttx-config/nsh/defconfig
+1
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@@ -193,6 +193,7 @@ CONFIG_STM32H7_BKPSRAM=y
CONFIG_STM32H7_DMA1=y
CONFIG_STM32H7_DMA2=y
CONFIG_STM32H7_DMACAPABLE=y
CONFIG_STM32H7_DTCMEXCLUDE=y
CONFIG_STM32H7_FLASH_OVERRIDE_I=y
CONFIG_STM32H7_FLOWCONTROL_BROKEN=y
CONFIG_STM32H7_I2C1=y
boards/ark/pi6x/nuttx-config/nsh/defconfig
+1
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@@ -193,6 +193,7 @@ CONFIG_STM32H7_BKPSRAM=y
CONFIG_STM32H7_DMA1=y
CONFIG_STM32H7_DMA2=y
CONFIG_STM32H7_DMACAPABLE=y
CONFIG_STM32H7_DTCMEXCLUDE=y
CONFIG_STM32H7_FLASH_OVERRIDE_I=y
CONFIG_STM32H7_FLOWCONTROL_BROKEN=y
CONFIG_STM32H7_I2C1=y