Change in coreboot[master]: soc/skl/vr_config: fix KBL-U GT3 detection bug

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change. ( https://review.coreboot.org/c/coreboot/+/35782 )

Change subject: soc/skl/vr_config: fix KBL-U GT3 detection bug
......................................................................

soc/skl/vr_config: fix KBL-U GT3 detection bug

Some VR parameter values for KBL-U with GT3 graphics are different from
values for other CPUs in this series [1]. However, GT3 iGPU will never
be detected, since the igd_id variable is compared with the LPC device
PCI ID. The patch fixes this bug.

[1] page 109, 7th Generation Intel(R) Processor Families for U/Y
    Platforms and 8th Generation Intel(R) Processor Family for U Quad
    Core and Y Dual Core Platforms. Datasheet, Volume 1. January 2019.
    Document Number: 334661-006

Change-Id: I33527d90550a1de78c9375d3d3b0e046787a559b
Signed-off-by: Maxim Polyakov 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35782
Tested-by: build bot (Jenkins) 
Reviewed-by: Patrick Rudolph 
---
M src/soc/intel/skylake/vr_config.c
1 file changed, 4 insertions(+), 2 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Patrick Rudolph: Looks good to me, approved

diff --git a/src/soc/intel/skylake/vr_config.c b/src/soc/intel/skylake/vr_config.c
index de5ad2c..121a344 100644
--- a/src/soc/intel/skylake/vr_config.c
+++ b/src/soc/intel/skylake/vr_config.c
@@ -213,7 +213,8 @@
    		VR_CFG_AMP(31),
    	};

-		if (igd_id == PCI_DEVICE_ID_INTEL_SPT_LP_U_BASE_HDCP22)
+		if ((igd_id == PCI_DEVICE_ID_INTEL_KBL_GT3E_SULTM_1) ||
+		    (igd_id == PCI_DEVICE_ID_INTEL_KBL_GT3E_SULTM_2))
    		icc_max[VR_IA_CORE] = VR_CFG_AMP(29);

return icc_max[domain];
@@ -285,7 +286,8 @@
    		VR_CFG_MOHMS(3.1),
    	};

-		if (igd_id == PCI_DEVICE_ID_INTEL_SPT_LP_U_PREMIUM_HDCP22) {
+		if ((igd_id == PCI_DEVICE_ID_INTEL_KBL_GT3E_SULTM_1) ||
+		    (igd_id == PCI_DEVICE_ID_INTEL_KBL_GT3E_SULTM_2)) {
    		loadline[VR_GT_UNSLICED] = VR_CFG_MOHMS(2);
    		loadline[VR_GT_SLICED] = VR_CFG_MOHMS(6);
    	}