On Tue, Jun 20, 2023 at 04:12:08PM -0400, Frank Li wrote:
> This patch series introduces support for the eDMA version 3 from
> Freescale. The eDMA v3 brings alterations in the register layout,
> particularly, the separation of channel control registers into
> different channels. The Transfer Control Descriptor (TCD) layout,
> however, remains identical with only the offset being changed.
>
> The first 11 patches aim at tidying up the existing Freescale
> eDMA code and laying the groundwork for the integration of eDMA v3
> support.
>
> Patch 1-11:
> These patches primarily focus on cleaning up and refactoring the existing
> fsl_edma driver code. This is to accommodate the upcoming changes and new
> features introduced with the eDMA v3.
>
> Patch 12:
> This patch introduces support for eDMA v3. In addition, this patch has
> been designed with an eye towards future upgradability, specifically for
> transitioning to eDMA v5. The latter involves a significant upgrade
> where the TCD address would need to support 64 bits.
>
> Patch 13:
> This patch focuses on the device tree bindings and their modifications
> to properly handle and integrate the changes brought about by eDMA v3
@vkoul:
Do you have chance to check these patches? Any chance to come into 6.5
All audio parts of i.MX8x and i.MX9 was dependent on these patches.
best regards
Frank Li
>
> Change from v8 to v9
> - add dmaengine: fsl-edma: fix build error when arch is s390
> fix kernel test robot build issue
>
> Change from v7 to v8
> -dt-bind: add missed part
>
> clock-names:
> > items:
> > - const: dma
> >
> > clocks:
> > maxItems: 1
>
> Change from v6 to v7
> -dt-bind: remove "else" branch.
>
> Change from v5 to v6
> - dt-bind: rework it by fixed top level constraint.
>
> Change from v4 to v5
> - dt-bind, add example for imx93 to trigger make dt_binding_check to
> generate the yaml error. fixed dt_binding_check error.
> keep compatible string ordered alphabetically.
>
> Change from v3 to v4.
> - use dma-channel-mask instead of fsl,channel-mask
> - don't use dmamux after v3. only use flags to distinguish the IP
> difference
> - fixed 8qm and imx93 have not CH_MUX register. Previous can work
> because dmamux is 0.
>
> Change from v2 to v3
> - dt-binding: add interrupt-names
> - dt-binding: add minItems
> - dt-binding: add missed property: fsl,channel-mask
> - rework patch 4, removed edma_version to avoid confuse with hardware
> IP version.
>
> Change from v1 to v2
> - fixed issue found by make DT_CHECKER_FLAGS=-m dt_binding_check
> - fixed warning found by kernel test robot
>
>
> Frank Li (13):
> 1 dmaengine: fsl-edma: fix build error when arch is s390
> 2 dmaengine: fsl-edma: clean up EXPORT_SYMBOL_GPL in fsl-edma-common.c
> 3 dmaengine: fsl-edma: clean up fsl_edma_irq_exit()
> 4 dmaengine: fsl-edma: transition from bool fields to bitmask flags in
> drvdata
> 5 dmaengine: fsl-edma: Remove enum edma_version
> 6 dmaengine: fsl-edma: move common IRQ handler to common.c
> 7 dmaengine: fsl-edma: simply ATTR_DSIZE and ATTR_SSIZE by using ffs()
> 8 dmaengine: fsl-edma: refactor using devm_clk_get_enabled
> 9 dmaengine: fsl-edma: move clearing of register interrupt into
> setup_irq function
> 10 dmaengine: fsl-edma: refactor chan_name setup and safety
> 11 dmaengine: fsl-edma: move tcd into struct fsl_dma_chan
> 12 dmaengine: fsl-edma: integrate v3 support
> 13 dt-bindings: fsl-dma: fsl-edma: add edma3 compatible string
>
> .../devicetree/bindings/dma/fsl,edma.yaml | 106 +++++-
> drivers/dma/Kconfig | 2 +-
> drivers/dma/Makefile | 6 +-
> drivers/dma/fsl-edma-common.c | 308 +++++++++++------
> drivers/dma/fsl-edma-common.h | 127 +++++--
> drivers/dma/{fsl-edma.c => fsl-edma-main.c} | 320 ++++++++++++++----
> drivers/dma/{mcf-edma.c => mcf-edma-main.c} | 36 +-
> 7 files changed, 677 insertions(+), 228 deletions(-)
> rename drivers/dma/{fsl-edma.c => fsl-edma-main.c} (62%)
> rename drivers/dma/{mcf-edma.c => mcf-edma-main.c} (90%)
>
> --
> 2.34.1
>
