[PATCH 4/5] riscv: defconfig: Enable AT24 EEPROM and ONIE TLV layout

[Troy Mitchell]

On Thu Nov 5, 2026 at 10:42 AM GMT, E Shattow wrote:
> On 11/5/26 00:23, Troy Mitchell wrote:
>> The OrangePi RV2 and R2S device trees take the Ethernet MAC address from
>> the ONIE TLV data in an AT24 EEPROM, and the K3 CoM260 module stores its
>> MAC address the same way. Without the EEPROM driver and the ONIE TLV
>> layout, the MAC address lookup keeps returning -EPROBE_DEFER and the
>> Ethernet controller never probes unless the bootloader passes a MAC
>> address in the device tree.
>> 
>> Enable both drivers as built-in so the MAC address is available as soon
>> as the Ethernet driver probes, including for network root file systems.
>
> This does not make sense for platforms which have no use for EEPROM
> driver in Linux userspace.
>
>> 
>> Signed-off-by: Troy Mitchell <troy.mitchell at linux.spacemit.com>
>> ---
>>  arch/riscv/configs/defconfig | 2 ++
>>  1 file changed, 2 insertions(+)
>> 
>> diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig
>> index 04ae305d5511..a76f801d8eed 100644
>> --- a/arch/riscv/configs/defconfig
>> +++ b/arch/riscv/configs/defconfig
>> @@ -276,6 +276,8 @@ CONFIG_PHY_STARFIVE_JH7110_DPHY_RX=m
>>  CONFIG_PHY_STARFIVE_JH7110_PCIE=m
>>  CONFIG_PHY_STARFIVE_JH7110_USB=m
>>  CONFIG_LIBNVDIMM=y
>> +CONFIG_NVMEM_LAYOUT_ONIE_TLV=y
>> +CONFIG_EEPROM_AT24=y
>
> Enabled as module, please.
Yes, you are right. Will be module in the next version.

-- 
Troy Mitchell

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