Messages in this thread | | | Date | Sat, 28 May 2005 19:10:39 +0200 | From | Jean Delvare <> | Subject | Re: I2C EEPROM write access |
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Hi Karel,
Sorry for the delay.
> Is it possible to use some Linux I2C driver to program an I2C EEPROM, > for example 24C16?
I don't think there is a driver for that. A driver isn't the only solution to do that though.
> I have noticed only read-only access to "DIMM eeproms". Are they > 24C16-alike?
The eeprom driver supports the 24C01, 24C02, 24C04, 24C08 and 24C16. In other words, all models which can be read using SMBus read byte data commands.
> Is there some reason why write driver is not present like users could > inadvertently overwrite their DIMM eeproms?
Exactly.
> Do these eeproms have a protection against write?
Some have, but that's unrelated.
> I am mainly interested in an application where 24C16 is in-circuit > connected to a PC and contents read and wrote (typically poking > at firmware configuration of various devices).
You may want to look at the prog/eepromer directory of the lm_sensors project. We have a set of user-space tools to write to EEPROMs of various sizes. They rely on the i2c-dev driver as the user-space/kernel interface.
-- Jean Delvare - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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