Messages in this thread | | | From | Amelie Delaunay <> | Subject | [RESEND PATCH 0/2] STM32 DMA alternative REQ/ACK protocol support | Date | Wed, 21 Jul 2021 13:39:44 +0200 |
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Default REQ/ACK protocol consists in maintaining ACK signal up to the removal of REQuest and the transfer completion. In case of alternative REQ/ACK protocol, ACK de-assertion does not wait the removal of the REQuest, but only the transfer completion. Due to a possible DMA stream lock when transferring data to/from STM32 USART/UART, add support to select alternative REQ/ACK protocol.
Amelie Delaunay (2): dt-bindings: dma: add alternative REQ/ACK protocol selection in stm32-dma dmaengine: stm32-dma: add alternate REQ/ACK protocol management
Documentation/devicetree/bindings/dma/st,stm32-dma.yaml | 7 +++++++ drivers/dma/stm32-dma.c | 8 ++++++-- 2 files changed, 13 insertions(+), 2 deletions(-)
-- 2.25.1
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