Re: [PATCH 0/4] dmaengine: qcom: bam_dma: fixes for remotely controlled bam

From: Vinod Koul
Date: Wed Jan 17 2018 - 05:14:25 EST


On Tue, Jan 16, 2018 at 07:02:32PM +0000, srinivas.kandagatla@xxxxxxxxxx wrote:
> From: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
>
> Hi Andy,
>
> I did hit few issues while trying out SLIMBus BAM on DB820c, this BAM instance
> is remotely controlled and powered up after ADSP is booted using QMI commands.

What do you mean by "remotely controlled" in this series?

>
> Firstly some of the master registers are written even when the BAM is remotely
> controlled, and secondly reading registers when bam is not ready yet.
>
> These 4 patches address these issues, there are few more issues like doing PM
> in simillar usecase, these will be addressed soon.
>
> Thanks,
> Srini
>
> Srinivas Kandagatla (4):
> dmaengine: qcom: bam_dma: make bam clk optional
> dmaengine: qcom: bam_dma: add num-channels binding for remotely
> controlled
> dmaengine: qcom: bam_dma: do not write to global regs in remote mode
> dmaengine: qcom: bam_dma: Add num-ees dt binding for remotely
> controlled
>
> .../devicetree/bindings/dma/qcom_bam_dma.txt | 4 ++
> drivers/dma/qcom/bam_dma.c | 56 +++++++++++++++-------
> 2 files changed, 43 insertions(+), 17 deletions(-)
>
> --
> 2.15.1
>

--
~Vinod