Why eeprom driver is read-only ?

[Chriz Chow]

Hello,

It seems that some drivers in drivers/misc/eeprom does support write access. For example at24.c seems to have a function at24_write().

https://github.com/torvalds/linux/blob/master/drivers/misc/eeprom/at24.c

However some drivers doesn’t have write support, I believe it is because of simplicity - some eeprom are used for read only, such as ddr4 spd eeprom.

Point me out if I am wrong. 

Chriz

Enviado desde mi iPhone

> El 19 nov 2018, a las 9:12 p. m., Ruben Safir <ruben at mrbrklyn.com> escribió:
> 
>> On 11/19/18 7:08 AM, Ranran wrote:
>> Hello,
>> 
>> What is the reason that kernel driver of eeprom is configured only as
>> read-only ?
>> 
>> Is it because the BIOS is stored there ?
>> 
>> Is there a way to make it writable ?
>> 
>> Thank you,
>> Ran
>> 
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>> 
> 
> 
> because the ROM is read only?
> 
> 
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