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

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Date:   Tue, 5 Mar 2019 14:47:19 +0800
From:   James Liao <jamesjj.liao@...iatek.com>
To:     Weiyi Lu <weiyi.lu@...iatek.com>
CC:     Nicolas Boichat <drinkcat@...omium.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Rob Herring <robh@...nel.org>,
        Fan Chen <fan.chen@...iatek.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>, <linux-clk@...r.kernel.org>,
        <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, 2019-03-05 at 13:05 +0800, Weiyi Lu 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-by: James Liao <jamesjj.liao@...iatek.com>

> ---
>  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,