[PATCH 1/7] dt-bindings: display/msm/dsi: allow specifying TE source

[Dmitry Baryshkov]

Command mode panels provide TE signal back to the DSI host to signal
that the frame display has completed and update of the image will not
cause tearing. Usually it is connected to the first GPIO with the
mdp_vsync function, which is the default. In such case the property can
be skipped.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
---
 .../bindings/display/msm/dsi-controller-main.yaml        | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml b/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml
index 1fa28e976559..c1771c69b247 100644
--- a/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml
+++ b/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml
@@ -162,6 +162,21 @@ properties:
                 items:
                   enum: [ 0, 1, 2, 3 ]
 
+              qcom,te-source:
+                $ref: /schemas/types.yaml#/definitions/string
+                description:
+                  Specifies the source of vsync signal from the panel used for
+                  tearing elimination. The default is mdp_gpio0.
+                enum:
+                  - mdp_gpio0
+                  - mdp_gpio1
+                  - mdp_gpio2
+                  - timer0
+                  - timer1
+                  - timer2
+                  - timer3
+                  - timer4
+
     required:
       - port at 0
       - port at 1
@@ -452,6 +467,7 @@ examples:
                           dsi0_out: endpoint {
                                    remote-endpoint = <&sn65dsi86_in>;
                                    data-lanes = <0 1 2 3>;
+                                   qcom,te-source = "mdp_gpio2";
                           };
                   };
            };

-- 
2.39.2