Merge tag 'ceph-for-4.20-rc1' of git://github.com/ceph/ceph-client

[sfrench/cifs-2.6.git] / Documentation / devicetree / bindings / display / atmel / hlcdc-dc.txt

diff --git a/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt b/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt
index 82f2acb3d37406d0916b2a202d3d28cc64c5fc06..0398aec488ace3041bb530bd2ab83862580de9d2 100644 (file)
--- a/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt
+++ b/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt
@@ -15,6 +15,13 @@ Required children nodes:
  to external devices using the OF graph reprensentation (see ../graph.txt).
  At least one port node is required.
 
+Optional properties in grandchild nodes:
+ Any endpoint grandchild node may specify a desired video interface
+ according to ../../media/video-interfaces.txt, specifically
+ - bus-width: recognized values are <12>, <16>, <18> and <24>, and
+   override any output mode selection heuristic, forcing "rgb444",
+   "rgb565", "rgb666" and "rgb888" respectively.
+
 Example:
 
        hlcdc: hlcdc@f0030000 {
@@ -50,3 +57,19 @@ Example:
                        #pwm-cells = <3>;
                };
        };
+
+Example 2: With a video interface override to force rgb565; as above
+but with these changes/additions:
+
+       &hlcdc {
+               hlcdc-display-controller {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&pinctrl_lcd_base &pinctrl_lcd_rgb565>;
+
+                       port@0 {
+                               hlcdc_panel_output: endpoint@0 {
+                                       bus-width = <16>;
+                               };
+                       };
+               };
+       };