drm: apple: Handle dcps with "phys" property as dcpext

jannau · jannau · commit 7cf95aa23b14 · 2025-07-28T09:30:08.000+02:00
Required for dp-altmode on M2 Mac Mini which will use dcp to drive
dp-altmode.

Signed-off-by: Janne Grunau &lt;j@jannau.net&gt;
diff --git a/drivers/gpu/drm/apple/apple_drv.c b/drivers/gpu/drm/apple/apple_drv.c
@@ -562,7 +562,8 @@ static int apple_drm_init_dcp(struct device *dev)
 			of_node_put(np);
 			continue;
 		}
-		dcp_ext = of_device_is_compatible(np, "apple,dcpext");
+		dcp_ext = of_device_is_compatible(np, "apple,dcpext") ||
+		          of_property_present(np, "phys");
 
 		dcp[num_dcp] = of_find_device_by_node(np);
 		of_node_put(np);

Original file line number	Diff line number	Diff line change
`@@ -562,7 +562,8 @@ static int apple_drm_init_dcp(struct device *dev)`
`562`	`562`	`of_node_put(np);`
`563`	`563`	`continue;`
`564`	`564`	`}`
`565`		`- dcp_ext = of_device_is_compatible(np, "apple,dcpext");`
	`565`	`+ dcp_ext = of_device_is_compatible(np, "apple,dcpext") \|\|`
	`566`	`+ of_property_present(np, "phys");`
`566`	`567`
`567`	`568`	`dcp[num_dcp] = of_find_device_by_node(np);`
`568`	`569`	`of_node_put(np);`