linux-kernel - Re: [linux-sunxi] Re: [PATCH v5 02/11] clk: sunxi-ng: add support for DE2 CCU

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Date:   Mon, 24 Apr 2017 18:26:51 +0800
From:   icenowy@...c.io
To:     maxime.ripard@...e-electrons.com
Cc:     Rob Herring <robh+dt@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-sunxi@...glegroups.com
Subject: Re: [linux-sunxi] Re: [PATCH v5 02/11] clk: sunxi-ng: add support for
 DE2 CCU

在 2017-04-24 16:51，Maxime Ripard 写道：
> Hi,
> 
> On Sun, Apr 23, 2017 at 06:37:45PM +0800, Icenowy Zheng wrote:
>> +static const struct of_device_id sunxi_de2_clk_ids[] = {
>> +	{
>> +		.compatible = "allwinner,sun8i-a83t-de2-clk",
>> +		.data = &sun8i_a83t_de2_clk_desc,
>> +	},
>> +	{
>> +		.compatible = "allwinner,sun50i-h5-de2-clk",
>> +		.data = &sun50i_a64_de2_clk_desc,
>> +	},
>> +	/*
>> +	 * The Allwinner A64 SoC needs some bit to be poke in syscon to make
>> +	 * DE2 really working.
>> +	 * So there's currently no A64 compatible here.
>> +	 * H5 shares the same reset line with A64, so here H5 is using the
>> +	 * clock description of A64.
>> +	 */
>> +	{ }
>> +};
> 
> So that A64 driver would require more than just what you defined in
> the binding in order to operate?

Yes. When trying to do A64 driver, I will send out first a patch to
add the needed binding bit.

> 
> Maxime
> 
> --
> Maxime Ripard, Free Electrons
> Embedded Linux and Kernel engineering
> http://free-electrons.com