[PATCH v2 1/4] dt-bindings: display: tegra: Make non-vm registers optional

[Mikko Perttunen]

The hypervisor and common register regions are not always available to
the software -- usually when a separate hypervisor keeps ownership of
them and only passes through the vm register region to a virtual
machine.

Adjust the bindings to make these regions optional to allow describing
the situation in device trees for such virtual machines et cetera.

Signed-off-by: Mikko Perttunen <mperttu...@nvidia.com>
---
 .../display/tegra/nvidia,tegra20-host1x.yaml       | 40 ++++++++++++++--------
 1 file changed, 26 insertions(+), 14 deletions(-)

diff --git 
a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.yaml 
b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.yaml
index 3563378a01af..ffd0ed857d28 100644
--- a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.yaml
+++ b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.yaml
@@ -145,14 +145,20 @@ allOf:
     then:
       properties:
         reg-names:
-          items:
-            - const: hypervisor
-            - const: vm
+          oneOf:
+            - items:
+                - const: hypervisor
+                - const: vm
+            - items:
+                - const: vm
 
         reg:
-          items:
-            - description: region used by the hypervisor
-            - description: region assigned to the virtual machine
+          oneOf:
+            - items:
+                - description: region used by the hypervisor
+                - description: region assigned to the virtual machine
+            - items:
+                - description: region assigned to the virtual machine
 
         resets:
           maxItems: 1
@@ -195,16 +201,22 @@ allOf:
     then:
       properties:
         reg-names:
-          items:
-            - const: common
-            - const: hypervisor
-            - const: vm
+          oneOf:
+            - items:
+                - const: common
+                - const: hypervisor
+                - const: vm
+            - items:
+                - const: vm
 
         reg:
-          items:
-            - description: region used by host1x server
-            - description: region used by the hypervisor
-            - description: region assigned to the virtual machine
+          oneOf:
+            - items:
+                - description: region used by host1x server
+                - description: region used by the hypervisor
+                - description: region assigned to the virtual machine
+            - items:
+                - description: region assigned to the virtual machine
 
         interrupts:
           items:

-- 
2.53.0