netdev - Re: [PATCH v3 4/8] ARM: dts: bcm283x: fix ethernet node name

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Message-ID: <20220216071633.GB19299@pengutronix.de>
Date:   Wed, 16 Feb 2022 08:16:33 +0100
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Benoît Cousson <bcousson@...libre.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Nicolas Saenz Julienne <nsaenz@...nel.org>,
        Ray Jui <rjui@...adcom.com>, Rob Herring <robh+dt@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Scott Branden <sbranden@...adcom.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Tony Lindgren <tony@...mide.com>, kernel@...gutronix.de,
        bcm-kernel-feedback-list@...adcom.com, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-omap@...r.kernel.org,
        linux-tegra@...r.kernel.org
Subject: Re: [PATCH v3 4/8] ARM: dts: bcm283x: fix ethernet node name

On Tue, Feb 15, 2022 at 01:01:06PM -0800, Florian Fainelli wrote:
> On 2/15/22 12:09 AM, Oleksij Rempel wrote:
> > It should be "ethernet@x" instead of "usbether@x"
> > 
> > Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
> 
> This looks like, a quick grep on the u-boot source code seems to suggest
> that only one file is assuming that 'usbether@1' is to be used as a node
> name and the error message does not even match the code it is patching:
> 
> board/liebherr/xea/xea.c:
>   #ifdef CONFIG_OF_BOARD_SETUP
>   static int fdt_fixup_l2switch(void *blob)
>   {
>           u8 ethaddr[6];
>           int ret;
> 
>           if (eth_env_get_enetaddr("ethaddr", ethaddr)) {
>                   ret = fdt_find_and_setprop(blob,
> 
> "/ahb@...80000/switch@...f0000",
>                                              "local-mac-address",
> ethaddr, 6, 1);
>                   if (ret < 0)
>                           printf("%s: can't find usbether@1 node: %d\n",
>                                  __func__, ret);
>           }

\o/ :)

>           return 0;
>   }
> 
> I will wait for the other maintainers on the other patches to provide
> some feedback, but if all is well, will apply this one soon.

Full path fdt matching has proven to be not stable enough. Especially on
chips with early DT adaptation like iMX. It is better to use aliases
where possible. 

Regards,
Oleksij
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