linux-kernel - Re: [PATCH v2 1/2] interconnect: qcom: Add SDM660 interconnect provider driver

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Date:   Tue, 6 Oct 2020 13:19:37 -0500
From:   Rob Herring <robh@...nel.org>
To:     kholk11@...il.com
Cc:     bjorn.andersson@...aro.org, agross@...nel.org,
        georgi.djakov@...aro.org, marijns95@...il.com,
        konradybcio@...il.com, martin.botka1@...il.com,
        linux-arm-msm@...r.kernel.org, phone-devel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] interconnect: qcom: Add SDM660 interconnect
 provider driver

On Mon, Sep 28, 2020 at 09:58:52PM +0200, kholk11@...il.com wrote:
> From: AngeloGioacchino Del Regno <kholk11@...il.com>
> 
> Introduce a driver for the Qualcomm interconnect busses found in
> the SDM630/SDM636/SDM660 SoCs.
> The topology consists of several NoCs that are controlled by a
> remote processor that collects the aggregated bandwidth for each
> master-slave pairs.
> 
> On a note, these chips are managing the "bus QoS" in a "hybrid"
> fashion: some of the paths in the topology are managed through
> (and by, of course) the RPM uC, while some others are "AP Owned",
> meaning that the AP shall do direct writes to the appropriate
> QoS registers for the specific paths and ports, instead of sending
> an indication to the RPM and leaving the job to that one.
> 
> Signed-off-by: AngeloGioacchino Del Regno <kholk11@...il.com>
> ---
>  drivers/interconnect/qcom/Kconfig             |   9 +
>  drivers/interconnect/qcom/Makefile            |   2 +
>  drivers/interconnect/qcom/sdm660.c            | 919 ++++++++++++++++++
>  .../dt-bindings/interconnect/qcom,sdm660.h    | 116 +++

This goes with the binding.

>  4 files changed, 1046 insertions(+)
>  create mode 100644 drivers/interconnect/qcom/sdm660.c
>  create mode 100644 include/dt-bindings/interconnect/qcom,sdm660.h