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authorVidya Gopalakrishnan <vidya.gopalakrishnan@intel.com>2022-06-20 16:31:05 +0530
committerFelix Held <felix-coreboot@felixheld.de>2022-06-29 13:58:30 +0000
commitdc1c7807049ffccb0d13bbdf1f2630e28929d6fd (patch)
tree470ccb0dd8f082d53fde382aaaa3c7e68159a083
parent0092c1534486c3bf77277bda9eb4b736efe11e2d (diff)
mb/google/brya/variants/nivviks: Enable DDR RFIM Policy for Nivviks
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 Nivviks variant. Refer to Intel doc:640438 and doc:690608 for more details. BUG=b:237238786 BRANCH=None TEST=Build and boot Nivviks. - Verified that Wifi DDR RFIM Feature is enabled and DDR RFI table can be modified. Signed-off-by: Vidya Gopalakrishnan <vidya.gopalakrishnan@intel.com> Change-Id: Iea5c6e0c404efb8231321701ea9282347e01f75d Reviewed-on: https://review.coreboot.org/c/coreboot/+/65254 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
-rw-r--r--src/mainboard/google/brya/variants/nivviks/overridetree.cb6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/mainboard/google/brya/variants/nivviks/overridetree.cb b/src/mainboard/google/brya/variants/nivviks/overridetree.cb
index 2188823fc5..38b6569497 100644
--- a/src/mainboard/google/brya/variants/nivviks/overridetree.cb
+++ b/src/mainboard/google/brya/variants/nivviks/overridetree.cb
@@ -175,6 +175,12 @@ chip soc/intel/alderlake
end
probe WFC WFC_MIPI_OVTI5675
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" = ""ELAN6915""