GenAVB/TSN SDK release 5.7.1

NXP · Jul 21, 2023 · 67ff7a0 · 67ff7a0
1 parent 6aa2f51
commit 67ff7a0
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Showing 2 changed files with 18 additions and 1 deletion.
diff --git a/SCR_genavb-release.txt b/SCR_genavb-release.txt
@@ -1,7 +1,7 @@
 NXP Software Content Register
 
 Release Name:           genavb-sdk
-Version:                GenAVB/TSN 5_7_0
+Version:                GenAVB/TSN 5_7_1
 Date Created:           July-2023
 Release Location:       https://github.com/NXP/GenAVB_TSN
 Description:            GenAVB/TSN protocol stack for NXP MPUs and MCUs processors

diff --git a/linux/scripts/avb.sh b/linux/scripts/avb.sh
@@ -624,6 +624,20 @@ set_cpu_power_management()
 
 }
 
+disable_dynamic_freq_scaling()
+{
+	case "$MACHINE" in
+	'imx93evk')
+		# Disable DDR scaling
+		echo "0" > /sys/devices/platform/imx93-lpm/auto_clk_gating
+		echo "Disable DDR frequency scaling"
+		;;
+	*)
+		return
+		;;
+	esac
+}
+
 setup()
 {
 	# Set userspace governor with the desired CPU frequency
@@ -640,6 +654,9 @@ setup()
 	# Disable CPU idle deep state transitions exceeding 10us
 	set_cpu_power_management 0
 
+	# Disable dynamic frequency scaling for better real time performance
+	disable_dynamic_freq_scaling
+
 	if [ $FORCE_100M -eq 1 ]; then
 		# Advertise 100 Mbps full-duplex
 		ethtool -s ${ITF} advertise 0x8