[M] Change in coreboot[main]: mb/google/brox: Fix booting to kernel without battery

[Subrata Banik (Code Review)]

Attention is currently required from: Ashish Kumar Mishra, Caveh Jalali, Dinesh Gehlot, Eric Herrmann, Forest Mittelberg, Jayvik Desai, Kapil Porwal, Karthik Ramasubramanian, Keith Short, Krishna P Bhat D, Nick Vaccaro, Paul Menzel, Rishika Raj, Ronak Kanabar, Shelley Chen, Sowmya Aralguppe, Sowmya Aralguppe.

Subrata Banik has posted comments on this change by Sowmya Aralguppe. ( https://review.coreboot.org/c/coreboot/+/83752?usp=email )

Change subject: mb/google/brox: Fix booting to kernel without battery
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Patch Set 22:

(1 comment)

File src/mainboard/google/brox/variants/baseboard/brox/ramstage.c:

https://review.coreboot.org/c/coreboot/+/83752/comment/e9d4a515_171403a5?usp... :
PS19, Line 57:  * PL4 calculations - For USB C charger (Max Power):
> Setting PL4 as 9 which is the PL4 value for 30watts is increasing boot time significantly (more than 2 secs) for default adaptor (65w)

I guess my question was "did you get a chance to root cause or find the reason why the boot time has regressed only during IO bound operation like reading from a block device while reducing the PL4 limit ?"
> Several iterations were recorded and the increase in the boottime is varying between modules
> > > However the difference between 32 and 36 efficiency for 60/65 watts is not very significant .Hence removed the if condition and all the adaptors will have same efficiency (32%)