linux-kernel - Re: [PATCH v2 3/3] clk: qcom: Add modem clock controller driver for SC7180

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Date:   Wed, 22 Jan 2020 13:29:06 -0800
From:   Doug Anderson <dianders@...omium.org>
To:     Taniya Das <tdas@...eaurora.org>
Cc:     Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        David Brown <david.brown@...aro.org>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        "open list:ARM/QUALCOMM SUPPORT" <linux-soc@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Andy Gross <agross@...nel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, Rob Herring <robh@...nel.org>,
        Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH v2 3/3] clk: qcom: Add modem clock controller driver for SC7180

Hi,

On Thu, Dec 26, 2019 at 8:43 PM Taniya Das <tdas@...eaurora.org> wrote:
>
> Add support for the modem clock controller found on SC7180
> based devices. This would allow modem drivers to probe and
> control their clocks.
>
> Signed-off-by: Taniya Das <tdas@...eaurora.org>
> ---
>  drivers/clk/qcom/Kconfig      |  9 +++++
>  drivers/clk/qcom/Makefile     |  1 +
>  drivers/clk/qcom/gcc-sc7180.c | 70 ++++++++++++++++++++++++++++++++
>  drivers/clk/qcom/mss-sc7180.c | 94 +++++++++++++++++++++++++++++++++++++++++++
>  4 files changed, 174 insertions(+)
>  create mode 100644 drivers/clk/qcom/mss-sc7180.c
>
> diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
> index 3b33ef1..5d4b6e5 100644
> --- a/drivers/clk/qcom/Kconfig
> +++ b/drivers/clk/qcom/Kconfig
> @@ -245,6 +245,15 @@ config SC_GCC_7180
>           Say Y if you want to use peripheral devices such as UART, SPI,
>           I2C, USB, UFS, SDCC, etc.
>
> +config SC_MSS_7180
> +       tristate "SC7180 MSS Clock Controller"
> +       select SC_GCC_7180
> +       help
> +         Support for the MSS clock controller on Qualcomm Technologies, Inc
> +         SC7180 devices.
> +         Say Y if you want to use the MSS branch clocks of the MSS clock
> +         controller to reset the MSS subsystem.

I didn't review your whole patch, but I was skimming through things
and trying to figure out what the heck a "MSS" clock was for a while
before I finally thought to look at the commit message and figured out
that it probably means "modem subsystem".  I assume you're going to
spin this patch somewhat soon.  When you do, can you please expand the
"MSS" acronym somewhere in your KConfig description?

Thanks!

-Doug