Re: [PATCH net-next v9 06/16] dt-bindings: net: dsa: add bindings for Renesas RZ/N1 Advanced 5 port switch

From: Geert Uytterhoeven <geert@linux-m68k.org>
To: "Clément Léger" <clement.leger@bootlin.com>
Cc: "Andrew Lunn" <andrew@lunn.ch>,
	"Vivien Didelot" <vivien.didelot@gmail.com>,
	"Florian Fainelli" <f.fainelli@gmail.com>,
	"Vladimir Oltean" <olteanv@gmail.com>,
	"David S . Miller" <davem@davemloft.net>,
	"Eric Dumazet" <edumazet@google.com>,
	"Jakub Kicinski" <kuba@kernel.org>,
	"Paolo Abeni" <pabeni@redhat.com>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
	"Magnus Damm" <magnus.damm@gmail.com>,
	"Heiner Kallweit" <hkallweit1@gmail.com>,
	"Russell King" <linux@armlinux.org.uk>,
	"Alexandre Torgue" <alexandre.torgue@foss.st.com>,
	"Giuseppe Cavallaro" <peppe.cavallaro@st.com>,
	"Jose Abreu" <joabreu@synopsys.com>,
	"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
	"Herve Codina" <herve.codina@bootlin.com>,
	"Miquèl Raynal" <miquel.raynal@bootlin.com>,
	"Milan Stevanovic" <milan.stevanovic@se.com>,
	"Jimmy Lalande" <jimmy.lalande@se.com>,
	"Pascal Eberhard" <pascal.eberhard@se.com>,
	"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree@vger.kernel.org>,
	Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
	netdev <netdev@vger.kernel.org>, "Rob Herring" <robh@kernel.org>
Subject: Re: [PATCH net-next v9 06/16] dt-bindings: net: dsa: add bindings for Renesas RZ/N1 Advanced 5 port switch
Date: Tue, 28 Jun 2022 17:37:57 +0200	[thread overview]
Message-ID: <CAMuHMdU9fpY5b9GGFYQ50KmFNu35J5d129F=9=LYZEN82R=cfw@mail.gmail.com> (raw)
In-Reply-To: <20220624144001.95518-7-clement.leger@bootlin.com>

Hi Clément,

On Fri, Jun 24, 2022 at 4:41 PM Clément Léger <clement.leger@bootlin.com> wrote:
> Add bindings for Renesas RZ/N1 Advanced 5 port switch. This switch is
> present on Renesas RZ/N1 SoC and was probably provided by MoreThanIP.
> This company does not exists anymore and has been bought by Synopsys.
> Since this IP can't be find anymore in the Synospsy portfolio, lets use
> Renesas as the vendor compatible for this IP.
>
> Signed-off-by: Clément Léger <clement.leger@bootlin.com>

Thanks for your patch!

> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/dsa/renesas,rzn1-a5psw.yaml
> @@ -0,0 +1,134 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/dsa/renesas,rzn1-a5psw.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Renesas RZ/N1 Advanced 5 ports ethernet switch
> +
> +maintainers:
> +  - Clément Léger <clement.leger@bootlin.com>
> +
> +description: |
> +  The advanced 5 ports switch is present on the Renesas RZ/N1 SoC family and
> +  handles 4 ports + 1 CPU management port.

While diving deeper into the RZ/N1 documentation, I noticed the switch
has 4 interrupts, which are currently not described in the bindings.
Presumably the driver has no need to use them, but as DT describes
hardware, I think it would be good to submit follow-up patches for
bindings and DTS to add the interrupts.

Thanks!

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds