[M] Change in coreboot[master]: soc/intel/meteorlake: provide a list of D-states to enter LPM

[Tarun Tuli (Code Review)]

Attention is currently required from: Eran Mitrani, Subrata Banik.

Tarun Tuli has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/71644 )

Change subject: soc/intel/meteorlake: provide a list of D-states to enter LPM
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Patch Set 7:

(1 comment)

File src/soc/intel/meteorlake/acpi.c:

https://review.coreboot.org/c/coreboot/+/71644/comment/30a73e0b_5c0515bb 
PS1, Line 172: //	{ SA_DEVFN_CPU_PCIE1_0,	ACPI_DEVICE_SLEEP_D3 },
             : 	{ SA_DEVFN_IGD,		ACPI_DEVICE_SLEEP_D3 },
             : 	{ PCI_DEVFN_DPTF,	ACPI_DEVICE_SLEEP_D3 },
             : 	{ PCI_DEVFN_IPU,	ACPI_DEVICE_SLEEP_D3 },
             : //	{ SA_DEVFN_CPU_PCIE6_0,	ACPI_DEVICE_SLEEP_D3 },
             : //	{ SA_DEVFN_CPU_PCIE6_2,	ACPI_DEVICE_SLEEP_D3 },
             : 	{ PCI_DEVFN_TBT0,	ACPI_DEVICE_SLEEP_D3 },
             : 	{ PCI_DEVFN_TBT1,	ACPI_DEVICE_SLEEP_D3 },
             : 	{ PCI_DEVFN_TBT2,	ACPI_DEVICE_SLEEP_D3 },
             : 	{ PCI_DEVFN_TBT3,	ACPI_DEVICE_SLEEP_D3 },
             : 	{ PCI_DEVFN_GNA,	ACPI_DEVICE_SLEEP_D3 },
             : 	{ PCI_DEVFN_TCSS_XHCI,	ACPI_DEVICE_SLEEP_D3 },
             : 	{ PCI_DEVFN_TCSS_XDCI,	ACPI_DEVICE_SLEEP_D3 },
             : 	{ SA_DEVFN_TCSS_DMA0,	ACPI_DEVICE_SLEEP_D3 },
             : 	{ SA_DEVFN_TCSS_DMA1,	ACPI_DEVICE_SLEEP_D3 },
             : 	{ PCI_DEVFN_VMD,	ACPI_DEVICE_SLEEP_D3 },
             : //	{ PCH_DEVFN_I2C6,	ACPI_DEVICE_SLEEP_D3 },
             : //	{ PCH_DEVFN_I2C7,	ACPI_DEVICE_SLEEP_D3 },
> Tarun,  […]

They were based on some educated assumptions.  These would be most impacted by the downstream peripheral.  I think they would be fine to leave as D3.