linux-kernel - Re: [PATCH 07/11] clk: sunxi: add generic allwinner,sunxi name

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Date:	Mon, 8 Feb 2016 09:57:21 -0600
From:	Rob Herring <robh@...nel.org>
To:	Andre Przywara <andre.przywara@....com>
Cc:	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Chen-Yu Tsai <wens@...e.org>, linux-sunxi@...glegroups.com,
	Arnd Bergmann <arnd@...db.de>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Emilio López <emilio@...pez.com.ar>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...eaurora.org>, linux-clk@...r.kernel.org,
	Jens Kuske <jenskuske@...il.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org
Subject: Re: [PATCH 07/11] clk: sunxi: add generic allwinner,sunxi name

On Mon, Feb 01, 2016 at 05:39:26PM +0000, Andre Przywara wrote:
> The only difference between the different compatible matches at the
> end of clk-sunxi.c are the critical clocks. Two SoCs get away so far
> without any, so there is no reason to enumerate those SoCs in here
> explicitly, though we have to keep them in for compatibility reasons.
> 
> Rename the init function to highlight this generic feature and add a
> new, generic DT compatible string which can be used as a fallback value
> in the future should a particular SoC don't need any special treatment.
> 
> Signed-off-by: Andre Przywara <andre.przywara@....com>
> ---
>  Documentation/devicetree/bindings/arm/sunxi.txt |  4 ++++
>  drivers/clk/sunxi/clk-sunxi.c                   | 14 ++++++--------
>  2 files changed, 10 insertions(+), 8 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/arm/sunxi.txt b/Documentation/devicetree/bindings/arm/sunxi.txt
> index 7e79fcc..980e065 100644
> --- a/Documentation/devicetree/bindings/arm/sunxi.txt
> +++ b/Documentation/devicetree/bindings/arm/sunxi.txt
> @@ -14,3 +14,7 @@ using one of the following compatible strings:
>    allwinner,sun8i-a83t
>    allwinner,sun8i-h3
>    allwinner,sun9i-a80
> +
> +For Allwinner SoCs without any specific needs the generic fallback value of:
> +  allwinner,sunxi
> +can be used.

Perhaps "fallback" implies this, but be more specific that it can be 
used in addition to a specific string.

> diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
> index e460a6b..efcce85 100644
> --- a/drivers/clk/sunxi/clk-sunxi.c
> +++ b/drivers/clk/sunxi/clk-sunxi.c
> @@ -1052,14 +1052,12 @@ CLK_OF_DECLARE(sun8i_a23_clk_init, "allwinner,sun8i-a23", sun6i_init_clocks);
>  CLK_OF_DECLARE(sun8i_a33_clk_init, "allwinner,sun8i-a33", sun6i_init_clocks);
>  CLK_OF_DECLARE(sun8i_h3_clk_init, "allwinner,sun8i-h3", sun6i_init_clocks);
>  
> -static void __init sun8i_a83t_init_clocks(struct device_node *node)
> +static void __init sunxi_generic_init_clocks(struct device_node *node)
>  {
>  	sunxi_init_clocks(NULL, 0);
>  }
> -CLK_OF_DECLARE(sun8i_a83t_clk_init, "allwinner,sun8i-a83t", sun8i_a83t_init_clocks);
> -
> -static void __init sun9i_init_clocks(struct device_node *node)
> -{
> -	sunxi_init_clocks(NULL, 0);
> -}
> -CLK_OF_DECLARE(sun9i_a80_clk_init, "allwinner,sun9i-a80", sun9i_init_clocks);
> +CLK_OF_DECLARE(sun8i_a83t_clk_init, "allwinner,sun8i-a83t",
> +	       sunxi_generic_init_clocks);
> +CLK_OF_DECLARE(sun9i_a80_clk_init, "allwinner,sun9i-a80",
> +	       sunxi_generic_init_clocks);
> +CLK_OF_DECLARE(sunxi_clk_init, "allwinner,sunxi", sunxi_generic_init_clocks);
> -- 
> 2.6.4
>