fixup! arm64: dts: qcom: sdm660-xiaomi-lavender: Split by display

arch/arm64/boot/dts/qcom/sdm660-xiaomi-lavender-common.dtsi

@@ -41,7 +41,22 @@
 
 			/* In order to allow simledrm framebuffer to know
 			 * physical dimensions */
-			panel = <&panel>;
+			panel = <&fb_panel>;
+
+			/* HACK:
+			 * Fake panel node for simple-framebuffer to calculate DPI from. Only
+			 * needs width & height specified. This allows us to break device link
+			 * from simplefb to mdss (implicitly via panel->mdp->mdss) to fix drm
+			 * device probe ordering. Without this, simpledrm would probe second
+			 * after msm-drm, and confuse userspace with 2 GPUs in /dev/dri.
+			 * Alternative workaround is to boot with kernel parameter
+			 * `fw_devlink=permissive`, which is worse, because it can hide other
+			 * issues with device dependencies.
+			 */
+			fb_panel: fb-panel {
+				width-mm = <67>;
+				height-mm = <145>;
+			};
 		};
 	};
 
@@ -183,9 +198,6 @@
 		pinctrl-names = "default";
 		pinctrl-0 = <&mdss_dsi_active &mdss_te_active>;
 
-		width-mm = <67>;
-		height-mm = <145>;
-
 		port {
 			panel_in: endpoint {
 				remote-endpoint = <&mdss_dsi0_out>;