[S] Change in coreboot[main]: mb/google/brox/var/lotso: Tune I2C frequency for 400 kHz

[Jian Tong (Code Review)]

Attention is currently required from: Karthik Ramasubramanian, Paul Menzel, Wentao Qin.

Jian Tong has posted comments on this change by Jian Tong. ( https://review.coreboot.org/c/coreboot/+/83290?usp=email )

Change subject: mb/google/brox/var/lotso: Tune I2C frequency for 400 kHz
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Patch Set 5:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/83290/comment/4e4eaa77_e62b81aa?usp... :
PS5, Line 7: for 400 kHz
> Looking at the numbers, than this should be: … to be less than 400 kHz?

Yes, it is not strictly equal to 400khz, but it is close to 400khz. This is also reasonable.

https://review.coreboot.org/c/coreboot/+/83290/comment/91097cfd_f9482e4e?usp... :
PS5, Line 17: HW: Change R8409/R8411 to 33ohm.
> Sorry, I do not understand this comment. […]

Since the hardware design affects the I2C frequency, some hardware settings also need to be adjusted, so here are some resistor value adjustments.