On my x05 laptop I got: Memory type 0x12 not supported yet, not instantiating SPD Adding the 0x12 case lead to a successful instantiated SPD AT24 EEPROM. i801_smbus 0000:00:1f.3: SMBus using polling i2c i2c-6: 2/2 memory slots populated (from DMI) at24 6-0050: 256 byte spd EEPROM, read-only i2c i2c-6: Successfully instantiated SPD at 0x50 at24 6-0051: 256 byte spd EEPROM, read-only i2c i2c-6: Successfully instantiated SPD at 0x51 And then, I decoded it successfully via decode-dimms. Signed-off-by: Corentin Labbe <clabbe@xxxxxxxxxxxx> --- The result of decode-dimms could be found at http://kernel.montjoie.ovh/zoo/x05/decode-dimms.txt Since RAM is DDR, I wanted to add '/* DDR */' comment, but I didnt find any document with proof that this 0x12 is for DDR. drivers/i2c/i2c-smbus.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c index 07c92c8495a3..6dca19c994db 100644 --- a/drivers/i2c/i2c-smbus.c +++ b/drivers/i2c/i2c-smbus.c @@ -362,6 +362,7 @@ void i2c_register_spd(struct i2c_adapter *adap) } switch (common_mem_type) { + case 0x12: case 0x13: /* DDR2 */ case 0x18: /* DDR3 */ case 0x1C: /* LPDDR2 */ -- 2.37.4
