[XS] Change in coreboot[main]: mb/google/brya/variants/craask: Enable DDR RFIM Policy for Craask

[Sumeet R Pawnikar (Code Review)]

Sumeet R Pawnikar has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/78453?usp=email )

Change subject: mb/google/brya/variants/craask: Enable DDR RFIM Policy for Craask
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mb/google/brya/variants/craask: Enable DDR RFIM Policy for Craask

DDR interfaces emit electromagnetic radiation which can couple
to the antennas of various radios that are integrated in the system,
and cause radio frequency interference (RFI). The DDR Radio Frequency
Interference Mitigation (DDR RFIM) feature is primarily aimed at
resolving narrowband RFI from DDR4/5 and LPDDR4/5 technologies
for the Wi-Fi high and ultra-high bands (~5-7 GHz).
This patch sets CnviDdrRfim UPD and enables CNVI DDR RFIM feature
for Craask variant.
Refer to Intel doc:640438 and doc:690608 for more details.

BUG=None
BRANCH=None
TEST=Build and boot Craask.
- Verified that Wifi DDR RFIM Feature is enabled and DDR RFI table can be modified.

Signed-off-by: Sumeet Pawnikar 
Change-Id: I5560bbedb26e88edd9d35f16b639fe63ef42c30e
---
M src/mainboard/google/brya/variants/craask/overridetree.cb
1 file changed, 8 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/53/78453/1

diff --git a/src/mainboard/google/brya/variants/craask/overridetree.cb b/src/mainboard/google/brya/variants/craask/overridetree.cb
index 691783c..eb16142 100644
--- a/src/mainboard/google/brya/variants/craask/overridetree.cb
+++ b/src/mainboard/google/brya/variants/craask/overridetree.cb
@@ -316,6 +316,14 @@
    		probe WFC WFC_MIPI_OVTI5675
    		probe WFC WFC_MIPI_OVTI8856
    	end
+
+		device ref cnvi_wifi on
+			chip drivers/wifi/generic
+				register "enable_cnvi_ddr_rfim" = "true"
+				device generic 0 on end
+			end
+		end
+
    	device ref i2c1 on
    		chip drivers/i2c/hid
    			register "generic.hid" = ""GTCH7502""