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

From: Icenowy Zheng
Date: Thu Nov 02 2017 - 03:49:20 EST


å 2017-11-02 15:11ïStephen Boyd åéï
On 10/09, Icenowy Zheng wrote:


ä 2017å10æ9æ GMT+08:00 äå3:18:09, Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx> åå:
>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?

Yes, thanks.