Hi Bartosz, On Mon, 26 Feb 2018 14:40:42 +0100, Bartosz Golaszewski wrote: > 2018-02-26 10:20 GMT+01:00 Jean Delvare <jdelvare@xxxxxxx>: > > The EEPROMs which hold the SPD data on DDR4 memory modules are no > > longer standard AT24C02-compatible EEPROMs. They are 512-byte EEPROMs > > which use only 1 I2C address for data access. You need to switch > > between the lower page and the upper page of data by sending commands > > on the SMBus. > > > > Signed-off-by: Jean Delvare <jdelvare@xxxxxxx> > > --- > > drivers/misc/eeprom/Kconfig | 11 + > > drivers/misc/eeprom/Makefile | 1 > > drivers/misc/eeprom/ee1004.c | 281 +++++++++++++++++++++++++++++++++++++++++++ > > 3 files changed, 293 insertions(+) > > is there any reason not to use regmap as is done currently in at24? It > would spare you a lot of code. No specific reason, just the fact that I never used regmap before so the idea did not occur to me. I can give it a try, but my driver is already pretty simple so I'm curious if there's really anything to win. Let's see. Is there any documentation available on how to convert an existing driver to use regmap? -- Jean Delvare SUSE L3 Support
