linux-kernel - Re: [PATCH 0/2] Add a regmap to Allwinner R40 CCU to export GMAC register

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Date:   Thu, 2 Nov 2017 00:11:25 -0700
From:   Stephen Boyd <sboyd@...eaurora.org>
To:     Icenowy Zheng <icenowy@...c.io>
Cc:     linux-arm-kernel@...ts.infradead.org,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Chen-Yu Tsai <wens@...e.org>, linux-sunxi@...glegroups.com,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] Add a regmap to Allwinner R40 CCU to export GMAC
 register

On 10/09, Icenowy Zheng wrote:
> 
> 
> 于 2017年10月9日 GMT+08:00 下午3:18:09, Maxime Ripard <maxime.ripard@...e-electrons.com> 写到:
> >On Fri, Oct 06, 2017 at 06:33:31AM +0000, Icenowy Zheng wrote:
> >> In the CCU of the Allwinner R40 SoC, there's a GMAC configuration
> >register,
> >> which is intended to be accessed by the dwmac-sun8i driver. On SoCs
> >already
> >> supported by the driver the register is placed in the syscon rather
> >than
> >> the CCU.
> >> 
> >> As CCU is a critical part of the SoC, so write to it should be
> >strictly
> >> limited. A regmap with restricted write permission is created by the
> >R40
> >> CCU driver, and can be get with dev_get_regmap. In order to tie the
> >regmap
> >> to the CCU device, the R40 CCU is now a platform driver, so a
> >platform
> >> device is created for it (and then tied with the regmap).
> >> 
> >> The first patch does the conversion of the driver to a platform
> >driver,
> >> and the second patch adds the regmap.
> >
> >I'd like to see first what you want to do with it.
> 
> Export the GMAC configuration register to dwmac-sun8i.
> 

Is this series going to be reposted?

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