Thread (19 messages) read the whole thread 19 messages, 4 authors, 2018-01-30

Re: [PATCH 2/4] dmaengine: qcom: bam_dma: add num-channels binding for remotely controlled

From: Rob Herring <hidden>
Date: 2018-01-29 16:19:18
Also in: dmaengine, linux-arm-msm, lkml

On Tue, Jan 16, 2018 at 07:02:34PM +0000, srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org wrote:
From: Srinivas Kandagatla <redacted>

When Linux is master of BAM, it can directly read registers to know number
of supported channels, however when its remotely controlled reading these
registers would trigger a crash if the BAM is not yet intialized/powered up
on the remote side.

This patch adds num-channels binding to specify number of supported
dma channels on remotely controlled BAM.

Signed-off-by: Srinivas Kandagatla <redacted>
---
 Documentation/devicetree/bindings/dma/qcom_bam_dma.txt |  2 ++
Reviewed-by: Rob Herring <redacted>
 drivers/dma/qcom/bam_dma.c                             | 13 +++++++++++--
 2 files changed, 13 insertions(+), 2 deletions(-)
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