Change in coreboot[master]: soc/intel/alderlake: Add support for ADL-N CPU Type

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change. ( https://review.coreboot.org/c/coreboot/+/59836 )

Change subject: soc/intel/alderlake: Add support for ADL-N CPU Type
......................................................................

soc/intel/alderlake: Add support for ADL-N CPU Type

Add Alder Lake-N case for adl_cpu_type and get_supported_lpm_mask.

Signed-off-by: Usha P 
Change-Id: If2917ac356fd80f84bcaf70ed710d329e77f7a6d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59836
Tested-by: build bot (Jenkins) 
Reviewed-by: Tim Wawrzynczak 
Reviewed-by: Kangheui Won 
---
M src/soc/intel/alderlake/cpu.c
M src/soc/intel/alderlake/include/soc/cpu.h
2 files changed, 12 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Tim Wawrzynczak: Looks good to me, but someone else must approve
  Kangheui Won: Looks good to me, approved

diff --git a/src/soc/intel/alderlake/cpu.c b/src/soc/intel/alderlake/cpu.c
index 94658c7..be11527 100644
--- a/src/soc/intel/alderlake/cpu.c
+++ b/src/soc/intel/alderlake/cpu.c
@@ -168,6 +168,11 @@
    	PCI_DEVICE_ID_INTEL_ADL_S_ID_15,
    };

+	const uint16_t adl_n_mch_ids[] = {
+		PCI_DEVICE_ID_INTEL_ADL_N_ID_1,
+		PCI_DEVICE_ID_INTEL_ADL_N_ID_2,
+	};
+
    const uint16_t mchid = pci_s_read_config16(PCI_DEV(0, PCI_SLOT(SA_DEVFN_ROOT),
    						   PCI_FUNC(SA_DEVFN_ROOT)),
    					   PCI_DEVICE_ID);
@@ -187,6 +192,11 @@
    		return ADL_S;
    }

+	for (size_t i = 0; i < ARRAY_SIZE(adl_n_mch_ids); i++) {
+		if (adl_n_mch_ids[i] == mchid)
+			return ADL_N;
+	}
+
    return ADL_UNKNOWN;
 }

@@ -195,6 +205,7 @@
    enum adl_cpu_type type = get_adl_cpu_type();
    switch (type) {
    case ADL_M: /* fallthrough */
+	case ADL_N:
    case ADL_P:
    	return LPM_S0i2_0 | LPM_S0i3_0;
    case ADL_S:
diff --git a/src/soc/intel/alderlake/include/soc/cpu.h b/src/soc/intel/alderlake/include/soc/cpu.h
index 233e0c2..cd6f34f 100644
--- a/src/soc/intel/alderlake/include/soc/cpu.h
+++ b/src/soc/intel/alderlake/include/soc/cpu.h
@@ -22,6 +22,7 @@
 enum adl_cpu_type {
    ADL_UNKNOWN,
    ADL_M,
+	ADL_N,
    ADL_P,
    ADL_S,
 };

2 is the latest approved patch-set.
No files were changed between the latest approved patch-set and the submitted one.