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EE1004
From dankwiki
EE1004-v is a JEDEC standard for SPD published May 2022. It is used in DDR4+ DIMMs, and has its own kernel module, ee1004, updating the at24 module.
Reading EE1004
Load the eeprom and ee1004 modules (the former is still necessary for decode-dimms to function, but is deprecated). Determine which DIMMs are populated via addresses 0x50--0x57 on an SMBUS-type I2C connection. Here, buses 0 and 1 are SMBUS (using the i2c-piix4 module).
[schwarzgerat](0) $ i2cdetect -l i2c-0 smbus SMBus PIIX4 adapter port 0 at 0b00 SMBus adapter i2c-1 smbus SMBus PIIX4 adapter port 2 at 0b00 SMBus adapter ..... [schwarzgerat](0) $
Let's take a look across bus 0:
[schwarzgerat](0) $ i2cdetect -y 0
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: 08 09 -- -- 0c -- -- --
10: 10 11 -- 13 14 15 -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- 27 28 -- -- -- -- -- -- --
30: 30 31 -- -- 34 35 -- 37 -- -- 3a -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- 4a -- -- -- -- --
50: UU UU UU UU UU UU UU UU -- -- -- -- -- -- -- --
60: -- -- 62 63 64 -- -- -- 68 69 -- -- 6c -- -- --
70: 70 71 72 -- 74 -- 76 --
[schwarzgerat](0) $
