linux-kernel - Re: [PATCH v3 2/2] interconnect: qcom: Add OSM L3 interconnect provider support

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Message-ID: <CAE=gft5cS54qn0JjxO58xL6sFyQk4t=8ofLFWPUSVQ9sdU4XpQ@mail.gmail.com>
Date:   Fri, 6 Dec 2019 11:16:10 -0800
From:   Evan Green <evgreen@...omium.org>
To:     Sibi Sankar <sibis@...eaurora.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Georgi Djakov <georgi.djakov@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <agross@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Mark Rutland <mark.rutland@....com>,
        David Dai <daidavid1@...eaurora.org>,
        Saravana Kannan <saravanak@...gle.com>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        linux-kernel-owner@...r.kernel.org
Subject: Re: [PATCH v3 2/2] interconnect: qcom: Add OSM L3 interconnect
 provider support

On Wed, Nov 27, 2019 at 12:42 AM Sibi Sankar <sibis@...eaurora.org> wrote:
>
> Hey Evan/Georgi,
>
> https://git.linaro.org/people/georgi.djakov/linux.git/commit/?h=icc-dev&id=9197da7d06e88666d1588e3c21a743e60381264d
>
> With the "Redefine interconnect provider
> DT nodes for SDM845" series, wouldn't it
> make more sense to define the OSM_L3 icc
> nodes in the sdm845.c icc driver and have
> the common helpers in osm_l3 driver? Though
> we don't plan on linking the OSM L3 nodes
> to the other nodes on SDM845/SC7180, we
> might have GPU needing to be linked to the
> OSM L3 nodes on future SoCs. Let me know
> how you want this done.
>
> Anyway I'll re-spin the series once the
> SDM845 icc re-work gets re-posted.

I don't have a clear picture of the proposal. You'd put the couple of
extra defines in sdm845.c for the new nodes. But then you'd need to do
something in icc_set() of sdm845. Is that when you'd call out to the
osm_l3 driver?