linux-kernel - Re: [PATCH net-next 1/2] dt-bindings: net: pcs: renesas,rzn1-miic: Add renesas,miic-phylink-active-low property

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <aRYADfD8QkIw9Fnd@shell.armlinux.org.uk>
Date: Thu, 13 Nov 2025 15:58:05 +0000
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: "Lad, Prabhakar" <prabhakar.csengg@...il.com>
Cc: Wolfram Sang <wsa+renesas@...g-engineering.com>,
	Clément Léger <clement.leger@...tlin.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>,
	linux-renesas-soc@...r.kernel.org, netdev@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	Biju Das <biju.das.jz@...renesas.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH net-next 1/2] dt-bindings: net: pcs: renesas,rzn1-miic:
 Add renesas,miic-phylink-active-low property

On Thu, Nov 13, 2025 at 02:45:18PM +0000, Lad, Prabhakar wrote:
> Hi Wolfram,
> 
> On Wed, Nov 12, 2025 at 8:40 PM Wolfram Sang
> <wsa+renesas@...g-engineering.com> wrote:
> >
> > Hi Prabhakar,
> >
> > > Add the boolean DT property `renesas,miic-phylink-active-low` to the RZN1
> >
> > Hmm, we already have "renesas,ether-link-active-low" in
> > renesas,ether.yaml and renesas,etheravb.yaml. Can't we reuse that?
> >
> On the RZ/N1x we have the below architecture
> 
>                                                       +----> Ethernet Switch
>                                                       |           |
>                                                       |           v
>     MII Converter ----------------------+      GMAC (Synopsys IP)
>                                                       |
>                                                       +----> EtherCAT
> Slave Controller
>                                                       |
>                                                       +----> SERCOS
> Controller

I'm not sure that diagram has come out correctly. If you're going to
draw diagrams, make sure you do it using a fixed-width font. To me,
it looks like the MII Converter is bolted to GMAC and only has one
connection, and the GMAC has what seems to be maybe five connections.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!