2 files changed, 20 insertions, 0 deletions
diff --git a/src/mainboard/google/octopus/variants/garg/overridetree.cb b/src/mainboard/google/octopus/variants/garg/overridetree.cb
index f3c580d2c0..971d0d8b7c 100644
--- a/src/mainboard/google/octopus/variants/garg/overridetree.cb
+++ b/src/mainboard/google/octopus/variants/garg/overridetree.cb
@@ -192,4 +192,5 @@ chip soc/intel/apollolake
 
 	# Disable compliance mode
 	register "DisableComplianceMode" = "1"
+	register "disable_xhci_lfps_pm" = "0"
 end
diff --git a/src/mainboard/google/octopus/variants/garg/variant.c b/src/mainboard/google/octopus/variants/garg/variant.c
index 7c84f2696b..0a6574d1a6 100644
--- a/src/mainboard/google/octopus/variants/garg/variant.c
+++ b/src/mainboard/google/octopus/variants/garg/variant.c
@@ -8,6 +8,7 @@
 #include <delay.h>
 #include <gpio.h>
 #include <variant/sku.h>
+#include <soc/intel/apollolake/chip.h>
 
 const char *mainboard_vbt_filename(void)
 {
@@ -42,3 +43,21 @@ void variant_smi_sleep(u8 slp_typ)
 		return;
 	}
 }
+
+void variant_update_devtree(struct device *dev)
+{
+	struct soc_intel_apollolake_config *cfg = NULL;
+
+	cfg = (struct soc_intel_apollolake_config *)dev->chip_info;
+
+	if (cfg != NULL && (cfg->disable_xhci_lfps_pm != 1)) {
+		switch (google_chromeec_get_board_sku()) {
+		case SKU_17_LTE:
+		case SKU_18_LTE_TS:
+			cfg->disable_xhci_lfps_pm = 1;
+			return;
+		default:
+			return;
+		}
+	}
+}