arm64: dts: apple: touchbar: Mark ps_dispdfr_be as always-on

The driver depends on boot loader initialized state which resets when the
ps_dispdfr_be power-domain is powered off. This happens on suspend or
when the driver is missing during boot.
Mark the domain as always on until the driver can handle this.

Fixes: 7275e79 ("arm64: dts: apple: Add touchbar screen nodes")
Signed-off-by: Janne Grunau <j@jannau.net>

Author: jannau

arch/arm64/boot/dts/apple/t8112-j493.dts

@@ -66,6 +66,16 @@
 	post-init-providers = <&panel>;
 };
 
+/*
+ * The driver depends on boot loader initialized state which resets when this
+ * power-domain is powered off. This happens on suspend or when the driver is
+ * missing during boot. Mark the domain as always on until the driver can
+ * handle this.
+ */
+&ps_dispdfr_be {
+	apple,always-on;
+};
+
 &display_dfr {
 	status = "okay";
 };