[Cc: +Heiner]
Dear Armin,
Am 19.06.24 um 01:28 schrieb Armin Wolf:
Am 19.06.24 um 00:28 schrieb Wolfram Sang:
to 86 degrees C. If that doesn't work, we'll be really out of luck
with that controller (or at least I don't have an idea what else to
try).
Try CCing Heiner Kallweit for ideas about the i801 controller.
i am not Heiner Kallweit, but i found something interesting in
commit ba9ad2af7019 ("i2c: i801: Fix I2C Block Read on 8-Series/C220 and
later").
Basically, it seems that the i802 i2c controller indeed features a SPD
write disable bit which blocks all writes for slave addresses 0x50-0x57.
Does the i801 i2c controller driver print something like "SPD Write
Disable is set" during boot?
Nice find. Yes, it does:
[ 5.462605] i801_smbus 0000:00:1f.4: SPD Write Disable is set
[ 5.468399] i801_smbus 0000:00:1f.4: SMBus using PCI interrupt
Kind regards,
Paul
