Le Fri, 15 Apr 2022 01:22:01 +0200, Andrew Lunn <andrew@xxxxxxx> a écrit : > On Thu, Apr 14, 2022 at 02:22:47PM +0200, Clément Léger wrote: > > Add the MII converter node which describes the MII converter that is > > present on the RZ/N1 SoC. > > Do you have a board which actually uses this? I just noticed that > renesas,miic-cfg-mode is missing, it is a required property, but maybe > the board .dts file provides it? > > Andrew Hi Andrew, yes, I have a board that defines and use that. The renesas,miic-cfg-mode actually configures the muxes that are present on the SoC. They allows to mux the various ethernet components (Sercos Controller, HSR Controller, Ethercat, GMAC1, RTOS-GMAC). All these muxes are actually controller by a single register CONVCTRL_MODE. You can actually see the muxes that are present in the manual [1] at Section 8 and the CONVCTRL_MODE possible values are listed on page 180. This seems to be something that is board dependent because the muxing controls the MII converter outputs which depends on the board layout. I'm open to any modification for this setup which does not really fit any abstraction that I may have seen. [1] https://www.renesas.com/us/en/document/mah/rzn1d-group-rzn1s-group-rzn1l-group-users-manual-system-introduction-multiplexing-electrical-and -- Clément Léger, Embedded Linux and Kernel engineer at Bootlin https://bootlin.com
