[coreboot-gerrit] Change in coreboot[master]: soc/intel/jasperlake: Update CpuRatio settings

[Kaiyen Chang (Code Review)]

Attention is currently required from: Furquan Shaikh, Kaiyen Chang, Angel Pons, Patrick Rudolph, Karthik Ramasubramanian.
Kaiyen Chang has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/52029 )

Change subject: soc/intel/jasperlake: Update CpuRatio settings
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Patch Set 4:

(1 comment)

Patchset:

PS4:
> Why is this issue/system reset observed only on certain devices instead of all? […]

Hi Karthik,

The system reset would be invoked on all JSL devices while FSP finds the
value of CpuRatio from m_cfg is inconsistent with the value from CPU
Straps. So an extra system reset would be called while the value of flex ratio in CPU Straps is not zero currently (before applying this patch). In addition, the CpuRatio would be set back to zero so that the change of flex ratio in CPU Straps would not take affect for memory training.

The hang issue caused by this extra reset is another issue and we will investigate it later.

Thanks,  
Kaiyen