linux-kernel - Re: [PATCH v4 2/3] clk: qcom: add IPQ9574 interconnect clocks support

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Date: Thu, 28 Mar 2024 15:30:21 +0530
From: Varadarajan Narayanan <quic_varada@...cinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
CC: <andersson@...nel.org>, <konrad.dybcio@...aro.org>,
        <mturquette@...libre.com>, <sboyd@...nel.org>, <robh@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <djakov@...nel.org>, <quic_anusha@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-pm@...r.kernel.org>
Subject: Re: [PATCH v4 2/3] clk: qcom: add IPQ9574 interconnect clocks support

On Wed, Mar 27, 2024 at 10:49:56AM +0200, Dmitry Baryshkov wrote:
> On Wed, 27 Mar 2024 at 10:21, Varadarajan Narayanan
> <quic_varada@...cinc.com> wrote:
> >
> > Unlike MSM platforms that manage NoC related clocks and scaling
> > from RPM, IPQ SoCs dont involve RPM in managing NoC related
> > clocks and there is no NoC scaling.
> >
> > However, there is a requirement to enable some NoC interface
> > clocks for accessing the peripheral controllers present on
> > these NoCs. Though exposing these as normal clocks would work,
> > having a minimalistic interconnect driver to handle these clocks
> > would make it consistent with other Qualcomm platforms resulting
> > in common code paths. This is similar to msm8996-cbf's usage of
> > icc-clk framework.
> >
> > Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
> > ---
> > v4: Use clk_hw instead of indices
> >     Do icc register in qcom_cc_probe() call stream
> >     Add icc clock info to qcom_cc_desc structure
> > v3: Use indexed identifiers here to avoid confusion
> >     Fix error messages and move to common.c
> > v2: Move DTS to separate patch
> >     Update commit log
> >     Auto select CONFIG_INTERCONNECT & CONFIG_INTERCONNECT_CLK to fix build error
> > ---
> >  drivers/clk/qcom/Kconfig       |  2 ++
> >  drivers/clk/qcom/common.c      | 34 ++++++++++++++++++++-
> >  drivers/clk/qcom/common.h      |  4 ++-
> >  drivers/clk/qcom/gcc-ipq9574.c | 54 ++++++++++++++++++++++++++++++++++

Have addressed the comments and posted v5.
Kindly review.

Thanks
Varada