linux-kernel - Re: [PATCH v5 6/9] clk: mediatek: Add flags support for mtk

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Date:   Fri, 8 Mar 2019 14:20:57 +0800
From:   Nicolas Boichat <drinkcat@...omium.org>
To:     Weiyi Lu <weiyi.lu@...iatek.com>
Cc:     Matthias Brugger <matthias.bgg@...il.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Rob Herring <robh@...nel.org>,
        James Liao <jamesjj.liao@...iatek.com>,
        Fan Chen <fan.chen@...iatek.com>,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        lkml <linux-kernel@...r.kernel.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>, linux-clk@...r.kernel.org,
        srv_heupstream <srv_heupstream@...iatek.com>,
        stable@...r.kernel.org
Subject: Re: [PATCH v5 6/9] clk: mediatek: Add flags support for mtk_gate data

On Tue, Mar 5, 2019 at 1:06 PM Weiyi Lu <weiyi.lu@...iatek.com> wrote:
>
> On some Mediatek platforms, there are critical clocks of
> clock gate type.
> To register clock gate with flags CLK_IS_CRITICAL,
> we need to add the flags field in mtk_gate data and register APIs.
>
> Signed-off-by: Weiyi Lu <weiyi.lu@...iatek.com>

Reviewed-and-tested-by: Nicolas Boichat <drinkcat@...omium.org>

> ---
>  drivers/clk/mediatek/clk-gate.c | 5 +++--
>  drivers/clk/mediatek/clk-gate.h | 3 ++-
>  drivers/clk/mediatek/clk-mtk.c  | 3 ++-
>  drivers/clk/mediatek/clk-mtk.h  | 1 +
>  4 files changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/clk/mediatek/clk-gate.c b/drivers/clk/mediatek/clk-gate.c
> index 934bf0e45e26..85daf826619a 100644
> --- a/drivers/clk/mediatek/clk-gate.c
> +++ b/drivers/clk/mediatek/clk-gate.c
> @@ -157,7 +157,8 @@ struct clk *mtk_clk_register_gate(
>                 int clr_ofs,
>                 int sta_ofs,
>                 u8 bit,
> -               const struct clk_ops *ops)
> +               const struct clk_ops *ops,
> +               unsigned long flags)
>  {
>         struct mtk_clk_gate *cg;
>         struct clk *clk;
> @@ -168,7 +169,7 @@ struct clk *mtk_clk_register_gate(
>                 return ERR_PTR(-ENOMEM);
>
>         init.name = name;
> -       init.flags = CLK_SET_RATE_PARENT;
> +       init.flags = flags | CLK_SET_RATE_PARENT;
>         init.parent_names = parent_name ? &parent_name : NULL;
>         init.num_parents = parent_name ? 1 : 0;
>         init.ops = ops;
> diff --git a/drivers/clk/mediatek/clk-gate.h b/drivers/clk/mediatek/clk-gate.h
> index 72ef89b3ad7b..9f766dfe1d57 100644
> --- a/drivers/clk/mediatek/clk-gate.h
> +++ b/drivers/clk/mediatek/clk-gate.h
> @@ -47,6 +47,7 @@ struct clk *mtk_clk_register_gate(
>                 int clr_ofs,
>                 int sta_ofs,
>                 u8 bit,
> -               const struct clk_ops *ops);
> +               const struct clk_ops *ops,
> +               unsigned long flags);
>
>  #endif /* __DRV_CLK_GATE_H */
> diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c
> index 9c0ae4278a94..35359e5397c7 100644
> --- a/drivers/clk/mediatek/clk-mtk.c
> +++ b/drivers/clk/mediatek/clk-mtk.c
> @@ -130,7 +130,8 @@ int mtk_clk_register_gates(struct device_node *node,
>                                 gate->regs->set_ofs,
>                                 gate->regs->clr_ofs,
>                                 gate->regs->sta_ofs,
> -                               gate->shift, gate->ops);
> +                               gate->shift, gate->ops,
> +                               gate->flags);
>
>                 if (IS_ERR(clk)) {
>                         pr_err("Failed to register clk %s: %ld\n",
> diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h
> index 11b5517903d0..928905496c4b 100644
> --- a/drivers/clk/mediatek/clk-mtk.h
> +++ b/drivers/clk/mediatek/clk-mtk.h
> @@ -158,6 +158,7 @@ struct mtk_gate {
>         const struct mtk_gate_regs *regs;
>         int shift;
>         const struct clk_ops *ops;
> +       unsigned long flags;
>  };
>
>  int mtk_clk_register_gates(struct device_node *node,
> --
> 2.18.0
>