On Wed, 16 Oct 2024 14:39:52 +0200, Amelie Delaunay wrote:
> The HW version of STM32 DMA3 inside STM32MP25 requires some tunings to
> meet the needs of the interconnect. This series adds the linked list
> refactoring feature to have optimal performance when addressing the
> memory, and it adds the use of two new bits in the third cell specifying
> the DMA transfer requirements:
> - bit[16] to prevent packing/unpacking mode to avoid bytes loss in case
> of interrupting an ongoing transfer (e.g. UART RX),
> - bit[17] to prevent linked-list refactoring because some peripherals
> (e.g. FMC ECC) require a one-shot transfer, they trigger the DMA only
> once.
> It also adds platform data to clamp the burst length on AXI port,
> especially when it is interconnected to AXI3 bus, such as on STM32MP25.
> Finally this series also contains STM32MP25 device tree updates, to add
> DMA support on SPI, I2C, UART and apply the tunings introduced.
>
> [...]
Applied, thanks!
[1/9] dt-bindings: dma: stm32-dma3: prevent packing/unpacking mode
commit: 689f05586e7ea620c8fc1066c067809e52ffc2f3
[2/9] dmaengine: stm32-dma3: prevent pack/unpack thanks to DT configuration
commit: 12eb621e1abff65d89aeb4c92a4f3436225971d0
[3/9] dmaengine: stm32-dma3: refactor HW linked-list to optimize memory accesses
commit: cb467c451163bacad4cbb7540ce7d731946f13f9
[4/9] dt-bindings: dma: stm32-dma3: prevent additional transfers
commit: e18a9830233e739ae7045700232c53b4cb2e98eb
[5/9] dmaengine: stm32-dma3: prevent LL refactoring thanks to DT configuration
commit: 2ff0fb9474eefa7149c199fb3f79e54355a6c184
[6/9] dmaengine: stm32-dma3: clamp AXI burst using match data
commit: e713468e7c104a0598a7ec31ab7ec0bec94a174d
Best regards,
--
~Vinod
