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Message-ID: <20220511090815.42deebac@xps-bootlin>
Date:   Wed, 11 May 2022 09:08:15 +0200
From:   Clément Léger <clement.leger@...tlin.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Herve Codina <herve.codina@...tlin.com>,
        Miquèl Raynal <miquel.raynal@...tlin.com>,
        Milan Stevanovic <milan.stevanovic@...com>,
        Jimmy Lalande <jimmy.lalande@...com>,
        Pascal Eberhard <pascal.eberhard@...com>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-renesas-soc@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH net-next v4 00/12] add support for Renesas RZ/N1
 ethernet subsystem devices

Le Tue, 10 May 2022 09:30:17 -0700,
Florian Fainelli <f.fainelli@...il.com> a écrit :

> On 5/9/22 06:18, Clément Léger wrote:
> > The Renesas RZ/N1 SoCs features an ethernet subsystem which contains
> > (most notably) a switch, two GMACs, and a MII converter [1]. This
> > series adds support for the switch and the MII converter.
> > 
> > The MII converter present on this SoC has been represented as a PCS
> > which sit between the MACs and the PHY. This PCS driver is probed
> > from the device-tree since it requires to be configured. Indeed the
> > MII converter also contains the registers that are handling the
> > muxing of ports (Switch, MAC, HSR, RTOS, etc) internally to the SoC.
> > 
> > The switch driver is based on DSA and exposes 4 ports + 1 CPU
> > management port. It include basic bridging support as well as FDB
> > and statistics support.
> > 
> > This series needs commits 14f11da778ff6421 ("soc: renesas: rzn1:
> > Select PM and PM_GENERIC_DOMAINS configs") and ed66b37f916ee23b
> > ("ARM: dts: r9a06g032: Add missing '#power-domain-cells'") which
> > are available on the renesas-devel tree in order to enable generic
> > power domain on RZ/N1.
> > 
> > Link: [1]
> > https://www.renesas.com/us/en/document/mah/rzn1d-group-rzn1s-group-rzn1l-group-users-manual-r-engine-and-ethernet-peripherals
> >  
> Build testing this patch set gave me the following Kconfig warnings:
> 
> WARNING: unmet direct dependencies detected for PCS_RZN1_MIIC
>    Depends on [n]: NETDEVICES [=y] && (ARCH_RZN1 [=n] || COMPILE_TEST
> [=n]) Selected by [m]:
>    - NET_DSA_RZN1_A5PSW [=m] && NETDEVICES [=y] && NET_DSA [=m]
> 
> WARNING: unmet direct dependencies detected for PCS_RZN1_MIIC
>    Depends on [n]: NETDEVICES [=y] && (ARCH_RZN1 [=n] || COMPILE_TEST
> [=n]) Selected by [m]:
>    - NET_DSA_RZN1_A5PSW [=m] && NETDEVICES [=y] && NET_DSA [=m]
> 
> WARNING: unmet direct dependencies detected for PCS_RZN1_MIIC
>    Depends on [n]: NETDEVICES [=y] && (ARCH_RZN1 [=n] || COMPILE_TEST
> [=n]) Selected by [m]:
>    - NET_DSA_RZN1_A5PSW [=m] && NETDEVICES [=y] && NET_DSA [=m]
> 
> I started off with arm64's defconfig and then enabled all of the DSA 
> drivers.

Ok, I'll fix that.

Clément

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