Hi, On May 31, 2024, at 11:31, Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> wrote: > > Hi all, > >>> Wolfgang seems to think it's important: > > Wolfram, please. > >>> https://lore.kernel.org/lkml/tdia472d4pow2osabef24y2ujkkquplfajxmmtk5pnxllsdxsz@wxzynz7llasr/ >>> >> >> Ok, but that doesn't explain the reason. Wolfram, Paul, why do you >> think this is needed ? Note that I am not opposed to adding spd >> eeprom support, but I'd like to know why I am doing it before >> I spend time on it. > > A working eeprom driver is needed to get 'decode-dimms' from the > i2c-tools package working. Jean reported that EEPROM access for DDR5 is > different from DDR4, so it needs a separate driver. And > i2c_register_spd() then needs to be updated to use the new driver for > DDR5. Well my original downstream driver already had eeprom access: https://svn.exactcode.de/t2/trunk/package/kernel/linux/spd-5118.patch Note there are some surrounding -2, and parity patches around this patch. Thanks, René -- ExactCODE GmbH, Lietzenburger Str. 42, DE-10789 Berlin http://exactcode.com | http://exactscan.com | http://ocrkit.com
