于 2017年10月9日 GMT+08:00 下午3:18:09, Maxime Ripard <maxime.rip...@free-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. > >Maxime
