set HDMI max resolution to 4k

Signed-off-by: Ruixi Zhou <[email protected]>

gs/gs.sh

@@ -57,6 +57,13 @@ else
 	need_u_boot_update=1
 	need_reboot=1
 fi
+if [[ -f /boot/dtbo/rk3566-hdmi-max-resolution-4k.dtbo && "$ftdoverlays_extlinux" == *rk3566-hdmi-max-resolution-4k.dtbo* ]]; then
+        echo "rk3566-hdmi-max-resolution-4k dtb overlay is enabled"
+else
+        dtc -I dts -O dtb -o /boot/dtbo/rk3566-hdmi-max-resolution-4k.dtbo /home/radxa/gs/rk3566-hdmi-max-resolution-4k.dts
+        need_u_boot_update=1
+        need_reboot=1
+fi
 dtbo_enable_array=($dtbo_enable_list)
 for dtbo in "${dtbo_enable_array[@]}"; do
 	if [ -f /boot/dtbo/rk3568-${dtbo}.dtbo.disabled ]; then

gs/install.sh

@@ -17,8 +17,8 @@ echo -e "\033[31mRemove /etc/NetworkManager/system-connections/*\033[0m"
 [ "$(ls -A /etc/NetworkManager/system-connections/)" ] && rm /etc/NetworkManager/system-connections/*
 echo -e "\033[31mDisable wifibroadcast.service [email protected]\033[0m"
 systemctl disable wifibroadcast.service [email protected]
-echo -e "\033[31mcopy gs.sh wfb.sh stream.sh fan.sh button.sh rk3566-dwc3-otg-role-switch.dts to ${install_dir}/\033[0m"
-chmod +x gs.sh wfb.sh stream.sh fan.sh button.sh && cp gs.sh wfb.sh stream.sh fan.sh button.sh rk3566-dwc3-otg-role-switch.dts ${install_dir}/
+echo -e "\033[31mcopy gs.sh wfb.sh stream.sh fan.sh button.sh rk3566-dwc3-otg-role-switch.dts rk3566-hdmi-max-resolution-4k.dts to ${install_dir}/\033[0m"
+chmod +x gs.sh wfb.sh stream.sh fan.sh button.sh && cp gs.sh wfb.sh stream.sh fan.sh button.sh rk3566-dwc3-otg-role-switch.dts rk3566-hdmi-max-resolution-4k.dts ${install_dir}/
 echo -e "\033[31mcopy gs.conf to /config/gs.conf\033[0m"
 cp gs.conf /config/
 echo -e "\033[31mcopy gs.service to /etc/systemd/system/\033[0m"

gs/rk3566-hdmi-max-resolution-4k.dts

@@ -0,0 +1,19 @@
+/dts-v1/;
+
+/ {
+    metadata {
+        title = "Set maximum monitor resolution to 3840x2160";
+        category = "misc";
+        description = "Set maximum monitor resolution to 4K.";
+	compatible = "radxa,rock-3a\0radxa,rock-3b\0radxa,e25";
+    };
+
+    fragment@0 {
+        target-path = "/hdmi@fe0a0000";
+        __overlay__ {
+            preset_max_hdisplay = <3840>;
+			preset_max_vdisplay = <2160>;
+        };
+    };
+};
+