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Message-ID: <20180129162146.2h3kht4xhhr32mbp@rob-hp-laptop>
Date: Mon, 29 Jan 2018 10:21:46 -0600
From: Rob Herring <robh@...nel.org>
To: srinivas.kandagatla@...aro.org
Cc: Vinod Koul <vinod.koul@...el.com>,
Andy Gross <andy.gross@...aro.org>, dmaengine@...r.kernel.org,
Mark Rutland <mark.rutland@....com>,
David Brown <david.brown@...aro.org>,
Dan Williams <dan.j.williams@...el.com>,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
yanhe@...cinc.com, ramkri@....qualcomm.com, sdharia@...cinc.com
Subject: Re: [PATCH 4/4] dmaengine: qcom: bam_dma: Add num-ees dt binding for
remotely controlled
On Tue, Jan 16, 2018 at 07:02:36PM +0000, srinivas.kandagatla@...aro.org wrote:
> From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
>
> When Linux is master of BAM, it can directly read registers to know number
> of supported execution enviroments, 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 new binding num-ees to specify supported number of
> Execution Environments when BAM is remotely controlled.
>
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> ---
> Documentation/devicetree/bindings/dma/qcom_bam_dma.txt | 2 ++
> drivers/dma/qcom/bam_dma.c | 15 ++++++++++++---
> 2 files changed, 14 insertions(+), 3 deletions(-)
The correct split is the binding changes in 1 patch. Driver changes
separate.
>
> diff --git a/Documentation/devicetree/bindings/dma/qcom_bam_dma.txt b/Documentation/devicetree/bindings/dma/qcom_bam_dma.txt
> index aa6822cbb230..f0d10c2b393e 100644
> --- a/Documentation/devicetree/bindings/dma/qcom_bam_dma.txt
> +++ b/Documentation/devicetree/bindings/dma/qcom_bam_dma.txt
> @@ -17,6 +17,8 @@ Required properties:
> remote proccessor i.e. execution environment.
> - num-channels : optional, indicates supported number of DMA channels in a
> remotely controlled bam.
> +- num-ees : optional, indicates supported number of Execution Environments in a
> + remotely controlled bam.
This one needs a vendor prefix as it is not a common property.
>
> Example:
>
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