linux-kernel - Re: [PATCH] clk: qcom: camcc-sc7180: Add parent dependency to all camera GDSCs

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Date:   Fri, 21 Apr 2023 16:42:06 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Taniya Das <quic_tdas@...cinc.com>
Cc:     Stephen Boyd <sboyd@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Andy Gross <agross@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        quic_skakitap@...cinc.com, quic_cponnapa@...cinc.com
Subject: Re: [PATCH] clk: qcom: camcc-sc7180: Add parent dependency to all
 camera GDSCs

On Thu, 20 Apr 2023 at 14:55, Taniya Das <quic_tdas@...cinc.com> wrote:
>
> Mark titan_top_gdsc as parent to all other camera GDSCs.

Please expand the commit message. Your text describes what the patch
does, but it can be observed from the patch itself. Please describe
why it is done.

>
> Signed-off-by: Taniya Das <quic_tdas@...cinc.com>
> ---
>  drivers/clk/qcom/camcc-sc7180.c | 19 ++++++++++++-------
>  1 file changed, 12 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/clk/qcom/camcc-sc7180.c b/drivers/clk/qcom/camcc-sc7180.c
> index e2b4804695f3..8a4ba7a19ed1 100644
> --- a/drivers/clk/qcom/camcc-sc7180.c
> +++ b/drivers/clk/qcom/camcc-sc7180.c
> @@ -1480,12 +1480,21 @@ static struct clk_branch cam_cc_sys_tmr_clk = {
>         },
>  };
>
> +static struct gdsc titan_top_gdsc = {
> +       .gdscr = 0xb134,
> +       .pd = {
> +               .name = "titan_top_gdsc",
> +       },
> +       .pwrsts = PWRSTS_OFF_ON,
> +};
> +
>  static struct gdsc bps_gdsc = {
>         .gdscr = 0x6004,
>         .pd = {
>                 .name = "bps_gdsc",
>         },
>         .pwrsts = PWRSTS_OFF_ON,
> +       .parent = &titan_top_gdsc.pd,
>         .flags = HW_CTRL,
>  };
>
> @@ -1495,6 +1504,7 @@ static struct gdsc ife_0_gdsc = {
>                 .name = "ife_0_gdsc",
>         },
>         .pwrsts = PWRSTS_OFF_ON,
> +       .parent = &titan_top_gdsc.pd,
>  };
>
>  static struct gdsc ife_1_gdsc = {
> @@ -1503,6 +1513,7 @@ static struct gdsc ife_1_gdsc = {
>                 .name = "ife_1_gdsc",
>         },
>         .pwrsts = PWRSTS_OFF_ON,
> +       .parent = &titan_top_gdsc.pd,
>  };
>
>  static struct gdsc ipe_0_gdsc = {
> @@ -1512,15 +1523,9 @@ static struct gdsc ipe_0_gdsc = {
>         },
>         .pwrsts = PWRSTS_OFF_ON,
>         .flags = HW_CTRL,
> +       .parent = &titan_top_gdsc.pd,
>  };
>
> -static struct gdsc titan_top_gdsc = {
> -       .gdscr = 0xb134,
> -       .pd = {
> -               .name = "titan_top_gdsc",
> -       },
> -       .pwrsts = PWRSTS_OFF_ON,
> -};
>
>  static struct clk_hw *cam_cc_sc7180_hws[] = {
>         [CAM_CC_PLL2_OUT_EARLY] = &cam_cc_pll2_out_early.hw,
> --
> 2.17.1
>


-- 
With best wishes
Dmitry