From: "Clément Léger" <clement.leger@bootlin.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
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>,
"Geert Uytterhoeven" <geert+renesas@glider.be>,
"Magnus Damm" <magnus.damm@gmail.com>,
"Heiner Kallweit" <hkallweit1@gmail.com>,
"Russell King" <linux@armlinux.org.uk>,
"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>
Subject: Re: [PATCH net-next v5 11/13] ARM: dts: r9a06g032: describe GMAC2
Date: Fri, 20 May 2022 10:13:32 +0200 [thread overview]
Message-ID: <20220520101332.0905739f@fixe.home> (raw)
In-Reply-To: <CAMuHMdUJpNSyX0qK64+W1G6P1S-78mb_+D0-w3kHOFY3VVkANQ@mail.gmail.com>
Le Fri, 20 May 2022 09:18:58 +0200,
Geert Uytterhoeven <geert@linux-m68k.org> a écrit :
> Hi Clément
>
> On Thu, May 19, 2022 at 5:32 PM Clément Léger <clement.leger@bootlin.com> wrote:
> > RZ/N1 SoC includes two MAC named GMACx that are compatible with the
> > "snps,dwmac" driver. GMAC1 is connected directly to the MII converter
> > port 1. GMAC2 however can be used as the MAC for the switch CPU
> > management port or can be muxed to be connected directly to the MII
> > converter port 2. This commit add description for the GMAC2 which will
> > be used by the switch description.
> >
> > Signed-off-by: Clément Léger <clement.leger@bootlin.com>
>
> Thanks for your patch!
>
> > --- a/arch/arm/boot/dts/r9a06g032.dtsi
> > +++ b/arch/arm/boot/dts/r9a06g032.dtsi
> > @@ -200,6 +200,23 @@ nand_controller: nand-controller@40102000 {
> > status = "disabled";
> > };
> >
> > + gmac2: ethernet@44002000 {
> > + compatible = "snps,dwmac";
>
> Does this need an SoC-specific compatible value?
Indeed, it might be useful to introduce a specific SoC compatible since
in a near future, there might be some specific support for that gmac.
Here is an overview of the gmac connection on the SoC:
┌─────────┐ ┌──────────┐
│ │ │ │
│ GMAC2 │ │ GMAC1 │
│ │ │ │
└───┬─────┘ └─────┬────┘
│ │
│ │
│ │
┌────▼──────┐ │
│ │ │
┌────────────────────────────┤ SWITCH │ │
│ │ │ │
│ ┌─────────────────┴─┬────┬────┘ │
│ │ ┌──────┘ │ │
│ │ │ │ │
┌────▼──────────▼────────────▼───────────▼─────────────▼────┐
│ MII Converter │
│ │
│ │
│ port 1 port 2 port 3 port 4 port 5 │
└───────────────────────────────────────────────────────────┘
As you can see, the GMAC1 is directly connected to MIIC converter and
thus will need a "pcs-handle" property to point on the MII converter
port whereas the GMAC2 is directly connected to the switch in GMII.
Is "renesas,r9a06g032-gmac2", "renesas,rzn1-switch-gmac2" looks ok for
you for this one ?
Thanks,
Clément
>
> > + reg = <0x44002000 0x2000>;
> > + interrupt-parent = <&gic>;
> > + interrupts = <GIC_SPI 37
> > IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 39
> > IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 38
> > IRQ_TYPE_LEVEL_HIGH>;
> > + interrupt-names = "macirq", "eth_wake_irq",
> > "eth_lpi";
> > + clock-names = "stmmaceth";
> > + clocks = <&sysctrl R9A06G032_HCLK_GMAC1>;
>
> Missing "power-domains", also in the DT bindings.
> The driver already uses Runtime PM.
Ok,I'll add that to the DT and modify the DWMAC bindings.
>
> > + snps,multicast-filter-bins = <256>;
> > + snps,perfect-filter-entries = <128>;
> > + tx-fifo-depth = <2048>;
> > + rx-fifo-depth = <4096>;
> > + status = "disabled";
> > + };
> > +
> > eth_miic: eth-miic@44030000 {
> > compatible = "renesas,r9a06g032-miic",
> > "renesas,rzn1-miic"; #address-cells = <1>;
>
> 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
--
Clément Léger,
Embedded Linux and Kernel engineer at Bootlin
https://bootlin.com
next prev parent reply other threads:[~2022-05-20 8:14 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-19 15:30 [PATCH net-next v5 00/13] add support for Renesas RZ/N1 ethernet subsystem devices Clément Léger
2022-05-19 15:30 ` [PATCH net-next v5 01/13] net: dsa: allow port_bridge_join() to override extack message Clément Léger
2022-05-19 17:53 ` Vladimir Oltean
2022-05-19 15:30 ` [PATCH net-next v5 02/13] net: dsa: add support for ethtool get_rmon_stats() Clément Léger
2022-05-19 15:30 ` [PATCH net-next v5 03/13] net: dsa: add Renesas RZ/N1 switch tag driver Clément Léger
2022-05-19 15:30 ` [PATCH net-next v5 04/13] dt-bindings: net: pcs: add bindings for Renesas RZ/N1 MII converter Clément Léger
2022-05-20 7:09 ` Geert Uytterhoeven
2022-05-19 15:30 ` [PATCH net-next v5 05/13] net: pcs: add Renesas MII converter driver Clément Léger
2022-05-19 16:25 ` Russell King (Oracle)
2022-05-20 7:52 ` Clément Léger
2022-05-20 8:49 ` Vladimir Oltean
2022-05-20 15:22 ` Clément Léger
2022-05-20 15:44 ` Vladimir Oltean
2022-05-20 15:49 ` Clément Léger
2022-05-20 15:58 ` Vladimir Oltean
2022-05-20 16:22 ` Clément Léger
2022-05-19 15:31 ` [PATCH net-next v5 06/13] dt-bindings: net: dsa: add bindings for Renesas RZ/N1 Advanced 5 port switch Clément Léger
2022-05-20 7:13 ` Geert Uytterhoeven
2022-05-20 7:57 ` Clément Léger
2022-05-20 8:01 ` Geert Uytterhoeven
2022-05-20 8:16 ` Clément Léger
2022-05-24 2:34 ` Rob Herring
2022-05-19 15:31 ` [PATCH net-next v5 07/13] net: dsa: rzn1-a5psw: add Renesas RZ/N1 advanced 5 port switch driver Clément Léger
2022-05-19 18:08 ` Vladimir Oltean
2022-05-20 7:58 ` Clément Léger
2022-05-19 15:31 ` [PATCH net-next v5 08/13] net: dsa: rzn1-a5psw: add statistics support Clément Léger
2022-05-19 18:24 ` Vladimir Oltean
2022-05-19 15:31 ` [PATCH net-next v5 09/13] net: dsa: rzn1-a5psw: add FDB support Clément Léger
2022-05-19 18:12 ` Vladimir Oltean
2022-05-19 15:31 ` [PATCH net-next v5 10/13] ARM: dts: r9a06g032: describe MII converter Clément Léger
2022-05-19 15:31 ` [PATCH net-next v5 11/13] ARM: dts: r9a06g032: describe GMAC2 Clément Léger
2022-05-20 7:18 ` Geert Uytterhoeven
2022-05-20 8:13 ` Clément Léger [this message]
2022-05-20 8:25 ` Geert Uytterhoeven
2022-05-20 8:31 ` Clément Léger
2022-05-20 8:48 ` Geert Uytterhoeven
2022-05-19 15:31 ` [PATCH net-next v5 12/13] ARM: dts: r9a06g032: describe switch Clément Léger
2022-05-19 18:28 ` Vladimir Oltean
2022-05-20 8:18 ` Clément Léger
2022-05-19 15:31 ` [PATCH net-next v5 13/13] MAINTAINERS: add Renesas RZ/N1 switch related driver entry Clément Léger
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