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From: Marek Vasut <marex@nabladev.com>
To: Christoph Niedermaier <cniedermaier@dh-electronics.com>,
	u-boot@lists.denx.de
Cc: Peng Fan <peng.fan@nxp.com>,
	Patrice Chotard <patrice.chotard@foss.st.com>,
	Sam Protsenko <semen.protsenko@linaro.org>,
	Tom Rini <trini@konsulko.com>,
	u-boot@dh-electronics.com
Subject: Re: [PATCH V2] board: dhelectronics: imx: Use second Ethernet MAC also from fuse
Date: Fri, 3 Apr 2026 06:43:18 +0200	[thread overview]
Message-ID: <f33fd3f7-fbab-44d4-bce8-e33d8d03b933@nabladev.com> (raw)
In-Reply-To: <20260402143753.40142-1-cniedermaier@dh-electronics.com>

On 4/2/26 4:37 PM, Christoph Niedermaier wrote:
> Currently, the board specific code evaluates only the first Ethernet
> MAC address fuse, regardless of whether the first or second MAC
> address is requested. When the function for determine the second
> Ethernet MAC address is looking for the fused MAC address, it only
> reads the first MAC address fuse and increment it by one to set
> the second Ethernet MAC address. That is not the expected behavior
> when two MAC addresses are fused, because this causes the second
> fused MAC address to be ignored. Change this so that the second
> fused MAC address will be used.
> 
> In addition, the handling of the MAC address for early prototypes
> will be removed, as such SoMs were not used by customers.

This ^ should be kept.

> Signed-off-by: Christoph Niedermaier <cniedermaier@dh-electronics.com>
> Reviewed-by: Peng Fan <peng.fan@nxp.com>

RB goes above SoB line

[...]

> @@ -84,19 +84,8 @@ static int dh_imx8_setup_eth1addr(struct eeprom_id_page *eip)
>   	if (!dh_get_mac_from_eeprom(enetaddr, "eeprom1"))
>   		goto out;
>   
> -	/*
> -	 * Populate second ethernet MAC from first ethernet EEPROM with MAC
> -	 * address LSByte incremented by 1. This is only used on SoMs without
> -	 * second ethernet EEPROM, i.e. early prototypes.
> -	 */
> -	if (!dh_get_mac_from_eeprom(enetaddr, "eeprom0"))
> -		goto increment_out;
> -
>   	return -ENXIO;
>   
> -increment_out:
> -	enetaddr[5]++;
> -
>   out:
>   	return eth_env_set_enetaddr("eth1addr", enetaddr);
>   }

Please keep this ^ hunk, the rest is fine, thank you.

      reply	other threads:[~2026-04-03  4:43 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-02 14:37 [PATCH V2] board: dhelectronics: imx: Use second Ethernet MAC also from fuse Christoph Niedermaier
2026-04-03  4:43 ` Marek Vasut [this message]

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