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[v1,0/6] add edma2 for i.mx7ulp

Message ID 1557512248-8440-1-git-send-email-yibin.gong@nxp.com
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Series add edma2 for i.mx7ulp | expand


Robin Gong May 10, 2019, 10:14 a.m. UTC
This patch set add new version of edma for i.mx7ulp, the main changes
are as belows:
  1. only one dmamux.
  2. another clock dma_clk except dmamux clk.
  3. 16 independent interrupts instead of only one interrupt for
all channels.
  For the first change, need modify fsl-edma-common.c and mcf-edma,
so create the first two patches to prepare without any function
  For the third change, need request single irq for every channel with
the legacy handler. But actually 2 dma channels share one interrupt(16
channel interrupts, but 32 channels.),ch0/ch16,ch1/ch17... For now, just
simply request irq without IRQF_SHARED flag, since 16 channels are enough
on i.mx7ulp whose M4 domain own some peripherals.

Robin Gong (6):
  dmaengine: fsl-edma: add dmamux_nr for next version
  dmaengine: mcf-edma: update to 'dmamux_nr'
  dmaengine: fsl-edma-common: move dmamux register to another single
  dmaengine: fsl-edma: add i.mx7ulp edma2 version support
  dt-bindings: dma: fsl-edma: add new i.mx7ulp-edma
  ARM: dts: imx7ulp: add edma device node

 Documentation/devicetree/bindings/dma/fsl-edma.txt | 44 ++++++++++--
 arch/arm/boot/dts/imx7ulp.dtsi                     | 28 ++++++++
 drivers/dma/fsl-edma-common.c                      | 34 +++++++--
 drivers/dma/fsl-edma-common.h                      |  4 ++
 drivers/dma/fsl-edma.c                             | 80 ++++++++++++++++++++--
 drivers/dma/mcf-edma.c                             |  1 +
 6 files changed, 176 insertions(+), 15 deletions(-)