[PATCH v2 4/4] arm64: dts: rockchip: Make eeprom read-only for Radxa ROCK 3C/5A/5C

[FUKAUMI Naoki]

Hi Chukun,

On 11/13/25 23:00, Chukun Pan wrote:
> Hi,
> 
>> Make the BL24C16 EEPROM chips found on Radxa ROCK 3C, 5A and 5C SBCs
>> read-only, [1] [2] [3] because they contain factory-programmed data
>> that isn't supposed to be modified by the end users. [4]
> 
> Is this true? I confirmed that the EEPROM was empty when I submitted
> the ROCK 3C support. Based on the Radxa boards I purchased, it seems
> that only the "Network Computer" series SBC (E20C, E24C, E52C, E54C)
> have production information in their EEPROM.

I have confirmed with the Radxa internal team, and it is clear that for 
"all" products, the EEPROM (regardless of whether data has been written 
or not) is designated as: "The EEPROM is for factory data; users can 
read it, but they are not expected to write to it." This confirms that 
defining a read-only property is appropriate.

I will be submitting a series of patches to add eeprom nodes for several 
Radxa boards, and all of them will include the read-only property.

Best regards,

--
FUKAUMI Naoki
Radxa Computer (Shenzhen) Co., Ltd.

> Thanks,
> Chukun
>