2018-01-24 16:18 GMT+01:00 Felix Brack <[email protected]>: > > On 24.01.2018 16:08, Andy Shevchenko wrote: >> On Wed, Jan 24, 2018 at 4:23 PM, Felix Brack <[email protected]> wrote: >>> Hello, >>> >>> About three years ago I wrote a driver for Microchip's 24AA025E48 I2C >>> eeprom/nodeID chip. At that time I placed the source files in >>> drivers/misc/eeprom. I never posted the code. >>> I now plan to rewrite the driver from scratch. Is it correct to place >>> the source code in drivers/nvmem and is there a special mailing list to >>> which the patch should be posted when ready? >>> >>> many thanks and kind regards, Felix >> >> Does the existing driver [1] work for you (if you add ID there)? >> >> [1]: at24 >> > Yes it does. Actually the driver I wrote 3 years ago is based on the > at24 driver. Lot's of code in my driver originates directly from the > at24 driver. > > -- > regards Felix
Just from looking at the doc - it seems that it's a variant of 24mac402. You should be able to access the memory block by instantiating an 'atmel,24c02' device. As for the EUI-48 block - current at24 driver will not work as the MAC is located at a different offset in this chip. We need to figure out a portable way to specify the addresses of such special blocks (same with the serial number) in the at24 driver. Anyways - don't write your own driver for that, just make sure at24 works. Thanks, Bartosz
