From: Amelie Delaunay <amelie.delaunay@foss.st.com>
To: Vinod Koul <vkoul@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: <dmaengine@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-hardening@vger.kernel.org>
Subject: Re: [PATCH v3 00/12] Introduce STM32 DMA3 support
Date: Mon, 20 May 2024 17:46:42 +0200 [thread overview]
Message-ID: <61b68534-700d-489c-a5e0-029e46e03b1f@foss.st.com> (raw)
In-Reply-To: <20240520154213.689699-1-amelie.delaunay@foss.st.com>
Drop this incomplete series, issue with mail server.
On 5/20/24 17:42, Amelie Delaunay wrote:
> STM32 DMA3 is a direct memory access controller with different features
> depending on its hardware configuration. It is either called LPDMA (Low
> Power), GPDMA (General Purpose) or HPDMA (High Performance), and it can
> be found in new STM32 MCUs and MPUs.
>
> In STM32MP25 SoC [1], 3 HPDMAs and 1 LPDMA are embedded. Only HPDMAs are
> used by Linux.
>
> Before adding this new driver, this series gathers existing STM32 DMA
> drivers and bindings under stm32/ subdirectory and adds an entry in
> MAINTAINERS file.
>
> To ease review, the initial "dmaengine: Add STM32 DMA3 support" has been
> split into functionnalities.
> Patches 6 to 9 can be squashed into patch 5.
>
> Patch 10 has already been proposed [2], the API is now used in stm32-dma3
> driver. Indeed, STM32 DMA3 channels can be individually reserved either
> because they are secure, or dedicated to another CPU. These channels are
> not registered in dmaengine, so id is not incremented, but, using the new
> API to specify the channel name, channel name matches the name in the
> Reference Manual and ease requesting a channel thanks to its name.
>
> [1] https://www.st.com/resource/en/reference_manual/rm0457-stm32mp25xx-advanced-armbased-3264bit-mpus-stmicroelectronics.pdf
> [2] https://lore.kernel.org/lkml/20231213174021.3074759-1-amelie.delaunay@foss.st.com/
>
> v3:
> - address Rob's remarks about st,stm32-dma3.yaml
> (wrap at 80, remove useless '|')
> - address Frank's remarks about patch 5: improve commit message and
> ensure descriptors availability before starting the channel
>
> v2:
> - fix reference in spi/st,stm32-spi.yaml with an updated description of the
> dmas property to reflect the new path of STM32 DMA controllers bindings.
> - address Rob's remarks about st,stm32-dma3.yaml
> - address Vinod's remarks about stm32-dma3.c
>
> Amelie Delaunay (12):
> dt-bindings: dma: New directory for STM32 DMA controllers bindings
> dmaengine: stm32: New directory for STM32 DMA controllers drivers
> MAINTAINERS: Add entry for STM32 DMA controllers drivers and
> documentation
> dt-bindings: dma: Document STM32 DMA3 controller bindings
> dmaengine: Add STM32 DMA3 support
> dmaengine: stm32-dma3: add DMA_CYCLIC capability
> dmaengine: stm32-dma3: add DMA_MEMCPY capability
> dmaengine: stm32-dma3: add device_pause and device_resume ops
> dmaengine: stm32-dma3: improve residue granularity
> dmaengine: add channel device name to channel registration
> dmaengine: stm32-dma3: defer channel registration to specify channel
> name
> arm64: dts: st: add HPDMA nodes on stm32mp251
>
> .../dma/{ => stm32}/st,stm32-dma.yaml | 4 +-
> .../bindings/dma/stm32/st,stm32-dma3.yaml | 135 ++
> .../dma/{ => stm32}/st,stm32-dmamux.yaml | 4 +-
> .../dma/{ => stm32}/st,stm32-mdma.yaml | 4 +-
> .../devicetree/bindings/spi/st,stm32-spi.yaml | 2 +-
> MAINTAINERS | 9 +
> arch/arm64/boot/dts/st/stm32mp251.dtsi | 69 +
> drivers/dma/Kconfig | 34 +-
> drivers/dma/Makefile | 4 +-
> drivers/dma/dmaengine.c | 16 +-
> drivers/dma/idxd/dma.c | 2 +-
> drivers/dma/stm32/Kconfig | 47 +
> drivers/dma/stm32/Makefile | 5 +
> drivers/dma/{ => stm32}/stm32-dma.c | 2 +-
> drivers/dma/stm32/stm32-dma3.c | 1847 +++++++++++++++++
> drivers/dma/{ => stm32}/stm32-dmamux.c | 0
> drivers/dma/{ => stm32}/stm32-mdma.c | 2 +-
> include/linux/dmaengine.h | 3 +-
> 18 files changed, 2137 insertions(+), 52 deletions(-)
> rename Documentation/devicetree/bindings/dma/{ => stm32}/st,stm32-dma.yaml (97%)
> create mode 100644 Documentation/devicetree/bindings/dma/stm32/st,stm32-dma3.yaml
> rename Documentation/devicetree/bindings/dma/{ => stm32}/st,stm32-dmamux.yaml (89%)
> rename Documentation/devicetree/bindings/dma/{ => stm32}/st,stm32-mdma.yaml (96%)
> create mode 100644 drivers/dma/stm32/Kconfig
> create mode 100644 drivers/dma/stm32/Makefile
> rename drivers/dma/{ => stm32}/stm32-dma.c (99%)
> create mode 100644 drivers/dma/stm32/stm32-dma3.c
> rename drivers/dma/{ => stm32}/stm32-dmamux.c (100%)
> rename drivers/dma/{ => stm32}/stm32-mdma.c (99%)
>
next prev parent reply other threads:[~2024-05-20 15:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-20 15:42 [PATCH v3 00/12] Introduce STM32 DMA3 support Amelie Delaunay
2024-05-20 15:42 ` [PATCH v3 01/12] dt-bindings: dma: New directory for STM32 DMA controllers bindings Amelie Delaunay
2024-05-20 15:42 ` [PATCH v3 02/12] dmaengine: stm32: New directory for STM32 DMA controllers drivers Amelie Delaunay
2024-05-20 15:42 ` [PATCH v3 03/12] MAINTAINERS: Add entry for STM32 DMA controllers drivers and documentation Amelie Delaunay
2024-05-20 15:46 ` Amelie Delaunay [this message]
-- strict thread matches above, loose matches on Subject: below --
2024-05-20 15:49 [PATCH v3 00/12] Introduce STM32 DMA3 support Amelie Delaunay
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