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SubjectRe: [PATCH v5 0/6] add edma2 for i.mx7ulp
Hi Robin,

On Tue, Jun 25, 2019 at 05:43:18PM +0800, yibin.gong@nxp.com wrote:
> From: Robin Gong <yibin.gong@nxp.com>
>
> 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 impact.
>
> 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.
>
> change from v1:
> 1. check .data of 'of_device_id' in probe instead of compatible name.
>
> change from v2:
> 1. move the difference between edma and edma2 into driver data so that
> no need version checking in fsl-edma.c.
>
> change from v3:
> 1. remove duplicated 'version' and 'dmamux_nr' in 'struct fsl_edma_engine'
> since they are included in drvdata already.
> 2. downgrade print log level.
> 3. address some minor indent issues raised by Vinod.
>
> change from v4:
> 1. correct typo.
>
> Robin Gong (6):
> dmaengine: fsl-edma: add drvdata for fsl-edma
> dmaengine: fsl-edma-common: move dmamux register to another single
> function
> dmaengine: fsl-edma-common: version check for v2 instead
> dt-bindings: dma: fsl-edma: add new i.mx7ulp-edma
> dmaengine: fsl-edma: add i.mx7ulp edma2 version support
> 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 | 83 ++++++++++------
> drivers/dma/fsl-edma-common.h | 14 ++-
> drivers/dma/fsl-edma.c | 109 ++++++++++++++++++---
> drivers/dma/mcf-edma.c | 11 ++-
> 6 files changed, 239 insertions(+), 50 deletions(-)
>

I tested the patch-set on ColdFire mcf5441x (stmark2 board), all works fine.

Tested-by: Angelo Dureghello <angelo@sysam.it>


Regards,
Angelo

> --
> 2.7.4
>

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