On 30/11/2021 02:22, Wolfram Sang wrote:
Hi,
I still wonder if we can't get the SSIF BMC driver upstream...
Thanks Wolfram to help bring this up,
This driver was tested with Aspeed ast2500 and we have tried many way to
avoid using slave_enable() to toggle slave mode but there is no progress.
Our expectation is still to have this driver upstream'ed and I'm
thinking about testing this driver on other HW and re-post the driver.
@all: Plus, I neither like the API (because it doesn't look generic to
me but mostly handling one issue needed here) nor do I fully understand
the use case. Normally, when a read is requested and the backend needs
time to deliver the data, the hardware should stretch the SCL clock
until some data register is finally written to. If it doesn't do it for
whatever reason, this is a quirky hardware in my book and needs handling
in the driver only. So, what is special with this HW? Can't we solve it
differently?
... for that, it would be great if somebody could answer my questions
here :)
I have to admit that you are all right with the above comments. The fact
is we still not be able to find any way to solve this differently. We
don't own this HW and dont know what happen on this particular issue.
The SCL clock stretching on this HW does not work as expected and the
slave_enable() is the only solution for now. I hope if someone could
help with the issue as well.
Best regards,
- Quan
