Re: [PATCH v3 1/2] dt-bindings: dmaengine: bam_dma: Add "powered remotely" mode

[Rob Herring <robh@kernel.org>]

On Mon, 18 Oct 2021 12:24:20 +0200, Stephan Gerhold wrote:
> In some configurations, the BAM DMA controller is set up by a remote
> processor and the local processor can simply start making use of it
> without setting up the BAM. This is already supported using the
> "qcom,controlled-remotely" property.
> 
> However, for some reason another possible configuration is that the
> remote processor is responsible for powering up the BAM, but we are
> still responsible for initializing it (e.g. resetting it etc). Add
> a "qcom,powered-remotely" property to describe that configuration.
> 
> Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
> ---
> Changes in v3: None, split from BAM-DMUX patch set
> Changes since RFC:
>   - Rename qcom,remote-power-collapse -> qcom,powered-remotely
>     for consistency with "qcom,controlled-remotely"
> 
> Also note that there is an ongoing effort to convert these bindings
> to DT schema but sadly there were not any updates for a while. :/
> https://lore.kernel.org/linux-arm-msm/20210519143700.27392-2-bhupesh.sharma@linaro.org/
> ---
>  Documentation/devicetree/bindings/dma/qcom_bam_dma.txt | 2 ++
>  1 file changed, 2 insertions(+)
> 

Acked-by: Rob Herring <robh@kernel.org>