linux-kernel - Re: [PATCH 1/4] ARM: sunxi: Introduce Allwinner for A83T support

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Message-ID: <CAGb2v67pX_q=O0ezUs4CbhMz-Do_0dxq7WnfGPjxw0JNDZar=g@mail.gmail.com>
Date:	Tue, 22 Sep 2015 23:56:26 +0800
From:	Chen-Yu Tsai <wens@...e.org>
To:	Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:	Chen-Yu Tsai <wens@...e.org>,
	Vishnu Patekar <vishnupatekar0510@...il.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Emilio Lopez <emilio@...pez.com.ar>,
	Linus Walleij <linus.walleij@...aro.org>,
	Jens Kuske <jenskuske@...il.com>,
	Hans De Goede <hdegoede@...hat.com>,
	devicetree <devicetree@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-sunxi <linux-sunxi@...glegroups.com>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH 1/4] ARM: sunxi: Introduce Allwinner for A83T support

On Tue, Sep 22, 2015 at 11:53 PM, Maxime Ripard
<maxime.ripard@...e-electrons.com> wrote:
> On Tue, Sep 22, 2015 at 11:47:40PM +0800, Chen-Yu Tsai wrote:
>> On Tue, Sep 22, 2015 at 11:38 PM, Vishnu Patekar
>> <vishnupatekar0510@...il.com> wrote:
>> > Allwinner A83T is octa-core cortex-a7 based SoC.
>> > It's clock control unit and prcm, pinmux are different from previous sun8i
>> > series.
>> > Its processor cores are arragned in two clusters 4 cores each,
>> > similar to A80.
>> >
>> > Signed-off-by: Vishnu Patekar <vishnupatekar0510@...il.com>
>> > ---
>> >  Documentation/devicetree/bindings/arm/sunxi.txt | 1 +
>> >  arch/arm/mach-sunxi/sunxi.c                     | 1 +
>> >  drivers/clk/sunxi/clk-sunxi.c                   | 6 ++++++
>> >  3 files changed, 8 insertions(+)
>> >
>> > diff --git a/Documentation/devicetree/bindings/arm/sunxi.txt b/Documentation/devicetree/bindings/arm/sunxi.txt
>> > index 67da205..cf5ed27 100644
>> > --- a/Documentation/devicetree/bindings/arm/sunxi.txt
>> > +++ b/Documentation/devicetree/bindings/arm/sunxi.txt
>> > @@ -11,4 +11,5 @@ using one of the following compatible strings:
>> >    allwinner,sun8i-a23
>> >    allwinner,sun8i-a33
>> >    allwinner,sun8i-h3
>> > +  allwinner,sun8i-a83t
>>
>> Alphabetic order please.
>>
>> >    allwinner,sun9i-a80
>> > diff --git a/arch/arm/mach-sunxi/sunxi.c b/arch/arm/mach-sunxi/sunxi.c
>> > index 65bab28..b04aefa 100644
>> > --- a/arch/arm/mach-sunxi/sunxi.c
>> > +++ b/arch/arm/mach-sunxi/sunxi.c
>> > @@ -69,6 +69,7 @@ static const char * const sun8i_board_dt_compat[] = {
>> >         "allwinner,sun8i-a23",
>> >         "allwinner,sun8i-a33",
>> >         "allwinner,sun8i-h3",
>> > +       "allwinner,sun8i-a83t",
>>
>> Same here.
>>
>> >         NULL,
>> >  };
>> >
>> > diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
>> > index 413070d..f216d5d 100644
>> > --- a/drivers/clk/sunxi/clk-sunxi.c
>> > +++ b/drivers/clk/sunxi/clk-sunxi.c
>> > @@ -1212,6 +1212,12 @@ CLK_OF_DECLARE(sun6i_a31s_clk_init, "allwinner,sun6i-a31s", sun6i_init_clocks);
>> >  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);
>> >
>> > +static void __init sun8ia83t_init_clocks(struct device_node *node)
>> > +{
>> > +       sunxi_init_clocks(NULL, 0);
>> > +}
>> > +CLK_OF_DECLARE(sun9i_a83t_clk_init, "allwinner,sun8i-a83t", sun8ia83t_init_clocks);
>>
>> sun8i? Missing underscore too.
>>
>> I think you should add this once you actually have clock support.
>> Otherwise this call basically does nothing.
>
> That's not true, it actually initializes most of the clocks in the
> system.

Right. Sorry, I think my thoughts strayed to sun9i.

ChenYu
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