Dual-link LVDS displays have two ports, therefore document this
with the bindings.
Signed-off-by: Fabrizio Castro <fabrizio.castro@xxxxxxxxxxxxxx>
---
v1->v2:
* Reworked the description of the ports property
* lvds0_panel_in in the example has been renamed to panel_in0
* lvds1_panel_in in the example has been renamed to panel_in1
Laurent,
in linux-next they are now working with:
Documentation/devicetree/bindings/display/panel/lvds.yaml
What should I do here?
Thanks,
Fab
.../bindings/display/panel/panel-lvds.txt | 95 ++++++++++++++++------
1 file changed, 71 insertions(+), 24 deletions(-)
diff --git a/Documentation/devicetree/bindings/display/panel/panel-lvds.txt b/Documentation/devicetree/bindings/display/panel/panel-lvds.txt
index 250850a..5231243 100644
--- a/Documentation/devicetree/bindings/display/panel/panel-lvds.txt
+++ b/Documentation/devicetree/bindings/display/panel/panel-lvds.txt
@@ -41,7 +41,12 @@ Required nodes:
- panel-timing: See panel-common.txt.
- ports: See panel-common.txt. These bindings require a single port subnode
- corresponding to the panel LVDS input.
+ (for a single link panel) corresponding to the panel LVDS input, or two port
+ subnodes (for a dual link panel) corresponding to the panel LVDS inputs.
+ Dual-link LVDS panels expect even pixels (0, 2, 4, etc.) and odd pixels (1, 3,
+ 5, etc.) on different input ports, it's up to the panel-specific bindings to
+ specify what port is expecting even pixels, and what port is expecting odd
+ pixels.
LVDS data mappings are defined as follows.
@@ -92,30 +97,72 @@ CTL3: 0
Example
-------
-panel {
- compatible = "mitsubishi,aa121td01", "panel-lvds";
-
- width-mm = <261>;
- height-mm = <163>;
-
- data-mapping = "jeida-24";
-
- panel-timing {
- /* 1280x800 @60Hz */
- clock-frequency = <71000000>;
- hactive = <1280>;
- vactive = <800>;
- hsync-len = <70>;
- hfront-porch = <20>;
- hback-porch = <70>;
- vsync-len = <5>;
- vfront-porch = <3>;
- vback-porch = <15>;
+Single port:
+ panel {
+ compatible = "mitsubishi,aa121td01", "panel-lvds";
+
+ width-mm = <261>;
+ height-mm = <163>;
+
+ data-mapping = "jeida-24";
+
+ panel-timing {
+ /* 1280x800 @60Hz */
+ clock-frequency = <71000000>;
+ hactive = <1280>;
+ vactive = <800>;
+ hsync-len = <70>;
+ hfront-porch = <20>;
+ hback-porch = <70>;
+ vsync-len = <5>;
+ vfront-porch = <3>;
+ vback-porch = <15>;
+ };
+
+ port {
+ panel_in: endpoint {
+ remote-endpoint = <&lvds_encoder>;
+ };
+ };
};
- port {
- panel_in: endpoint {
- remote-endpoint = <&lvds_encoder>;
+Two ports:
+ panel {
+ compatible = "advantech,idk-2121wr", "panel-lvds";
+
+ width-mm = <476>;
+ height-mm = <268>;
+
+ data-mapping = "vesa-24";
+
+ panel-timing {
+ clock-frequency = <148500000>;
+ hactive = <1920>;
+ vactive = <1080>;
+ hsync-len = <44>;
+ hfront-porch = <88>;
+ hback-porch = <148>;
+ vfront-porch = <4>;
+ vback-porch = <36>;
+ vsync-len = <5>;
+ };
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ panel_in0: endpoint {
+ remote-endpoint = <&lvds0_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ panel_in1: endpoint {
+ remote-endpoint = <&lvds1_out>;
+ };
+ };
};
};
-};
--
2.7.4
