linux-kernel - Re: [PATCH v3 1/5] clk: sunxi: Add apb0 gates for H3

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Date:	Thu, 4 Feb 2016 15:47:52 +0100
From:	Jean-Francois Moine <moinejf@...e.fr>
To:	Krzysztof Adamski <k@...ko.eu>
Cc:	inus Walleij <linus.walleij@...aro.org>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Chen-Yu Tsai <wens@...e.org>,
	Hans de Goede <hdegoede@...hat.com>,
	Lee Jones <lee@...nel.org>, Rob Herring <robh@...nel.org>,
	Jens Kuske <jenskuske@...il.com>,
	Fabian Frederick <fabf@...net.be>,
	Vishnu Patekar <vishnupatekar0510@...il.com>,
	linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com
Subject: Re: [PATCH v3 1/5] clk: sunxi: Add apb0 gates for H3

On Thu,  4 Feb 2016 00:33:46 +0100
Krzysztof Adamski <k@...ko.eu> wrote:

> This patch adds support for APB0 in H3. It seems to be compatible with
> earlier SOCs. apb0 gates controls R_ block peripherals (R_PIO, R_IR,
> etc).
> 
> Signed-off-by: Krzysztof Adamski <k@...ko.eu>
> ---
>  Documentation/devicetree/bindings/clock/sunxi.txt | 1 +
>  drivers/clk/sunxi/clk-simple-gates.c              | 2 ++
>  2 files changed, 3 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/clock/sunxi.txt b/Documentation/devicetree/bindings/clock/sunxi.txt
> index e59f57b..751c8b9f0 100644
> --- a/Documentation/devicetree/bindings/clock/sunxi.txt
> +++ b/Documentation/devicetree/bindings/clock/sunxi.txt
> @@ -45,6 +45,7 @@ Required properties:
>  	"allwinner,sun6i-a31-apb0-gates-clk" - for the APB0 gates on A31
>  	"allwinner,sun7i-a20-apb0-gates-clk" - for the APB0 gates on A20
>  	"allwinner,sun8i-a23-apb0-gates-clk" - for the APB0 gates on A23
> +	"allwinner,sun8i-h3-apb0-gates-clk" - for the APB0 gates on H3
>  	"allwinner,sun9i-a80-apb0-gates-clk" - for the APB0 gates on A80
>  	"allwinner,sun4i-a10-apb1-clk" - for the APB1 clock
>  	"allwinner,sun9i-a80-apb1-clk" - for the APB1 bus clock on A80
> diff --git a/drivers/clk/sunxi/clk-simple-gates.c b/drivers/clk/sunxi/clk-simple-gates.c
> index f4da52b..6753c87 100644
> --- a/drivers/clk/sunxi/clk-simple-gates.c
> +++ b/drivers/clk/sunxi/clk-simple-gates.c
> @@ -130,6 +130,8 @@ CLK_OF_DECLARE(sun8i_a23_apb2, "allwinner,sun8i-a23-apb2-gates-clk",
>  	       sunxi_simple_gates_init);
>  CLK_OF_DECLARE(sun8i_a33_ahb1, "allwinner,sun8i-a33-ahb1-gates-clk",
>  	       sunxi_simple_gates_init);
> +CLK_OF_DECLARE(sun8i_h3_apb0, "allwinner,sun8i-h3-apb0-gates-clk",
> +	       sunxi_simple_gates_init);
>  CLK_OF_DECLARE(sun9i_a80_ahb0, "allwinner,sun9i-a80-ahb0-gates-clk",
>  	       sunxi_simple_gates_init);
>  CLK_OF_DECLARE(sun9i_a80_ahb1, "allwinner,sun9i-a80-ahb1-gates-clk",

It seems that the other compatible strings are there for historical
reasons. Why do you need a new one with such a specific name?

It would have been more sensible to add a generic compatible string as
"allwinner,apb-gates", letting the removal of the other strings for a
later patch...

-- 
Ken ar c'hentañ	|	      ** Breizh ha Linux atav! **
Jef		|		http://moinejf.free.fr/