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

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Message-ID: <CAEzqOZvz4AHmmaoh3qe_AMJg2ON-fzG_1XixM861rJPoap5CdQ@mail.gmail.com>
Date:	Thu, 24 Sep 2015 18:55:03 +0800
From:	Vishnu Patekar <vishnupatekar0510@...il.com>
To:	Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	"pawel.moll@....com" <pawel.moll@....com>,
	"mark.rutland@....com" <mark.rutland@....com>,
	"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	emilio@...pez.com.ar, Linus Walleij <linus.walleij@...aro.org>,
	Jens Kuske <jenskuske@...il.com>,
	Hans de Goede <hdegoede@...hat.com>,
	Chen-Yu Tsai <wens@...e.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-sunxi@...glegroups.com" <linux-sunxi@...glegroups.com>,
	linux-gpio@...r.kernel.org
Subject: Re: [PATCH 1/4] ARM: sunxi: Introduce Allwinner for A83T support

Hello,

On Tue, Sep 22, 2015 at 11:51 PM, Maxime Ripard
<maxime.ripard@...e-electrons.com> wrote:
> Hi,
>
> On Tue, Sep 22, 2015 at 11:38:54PM +0800, Vishnu Patekar 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
>>    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",
>>       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)
>
> Having an underscore between sun8i and a83t would be great :)
>
>> +{
>> +     sunxi_init_clocks(NULL, 0);
>> +}
>> +CLK_OF_DECLARE(sun9i_a83t_clk_init, "allwinner,sun8i-a83t", sun8ia83t_init_clocks);
>
>                   ^ Is this a sun9i or sun8i SoC ?
It's sun8i, sorry.
>
> Is the list of protected clocks always going to be empty, or will you
> add some new clocks in that list in the future?
Yes, I'll add new clocks as time permits.
>
> Thanks!
> Maxime
>
> --
> Maxime Ripard, Free Electrons
> Embedded Linux, Kernel and Android engineering
> http://free-electrons.com
Thanks for review.
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