linux-kernel - Re: [Patch net-next v14 10/13] net: dsa: microchip: lan937x: add phylink_get

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Date:   Thu, 30 Jun 2022 12:36:25 +0100
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Arun Ramadoss <arun.ramadoss@...rochip.com>
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, bpf@...r.kernel.org,
        Woojung Huh <woojung.huh@...rochip.com>,
        UNGLinuxDriver@...rochip.com, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...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 <krzysztof.kozlowski+dt@...aro.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>
Subject: Re: [Patch net-next v14 10/13] net: dsa: microchip: lan937x: add
 phylink_get_caps support

On Thu, Jun 30, 2022 at 03:50:38PM +0530, Arun Ramadoss wrote:
> The internal phy of the LAN937x are capable of 100Mbps speed. And the

Good English grammar suggests never to start a sentence with "And".

> xMII port of switch is capable of 10/100/1000Mbps.

... and supports flow control?

> +void lan937x_phylink_get_caps(struct ksz_device *dev, int port,
> +			      struct phylink_config *config)
> +{
> +	config->mac_capabilities = MAC_100FD;
> +
> +	if (dev->info->supports_rgmii[port]) {
> +		/* MII/RMII/RGMII ports */
> +		config->mac_capabilities |= MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
> +					    MAC_100HD | MAC_10 | MAC_1000FD;

And SGMII too? (Which seems to be a given because from your list in the
series cover message, SGMII ports also support RGMII).

Thanks.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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