[PATCH v2 1/8] 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.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
Reviewed-by: Rob Herring (Arm) <robh at kernel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
---
 .../bindings/display/msm/dsi-controller-main.yaml       | 17 +++++++++++++++++
 1 file changed, 17 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..e1cb3a1fee81 100644
--- a/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml
+++ b/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml
@@ -162,6 +162,22 @@ 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.
+                default: mdp_vsync_p
+                enum:
+                  - mdp_vsync_p
+                  - mdp_vsync_s
+                  - mdp_vsync_e
+                  - timer0
+                  - timer1
+                  - timer2
+                  - timer3
+                  - timer4
+
     required:
       - port at 0
       - port at 1
@@ -452,6 +468,7 @@ examples:
                           dsi0_out: endpoint {
                                    remote-endpoint = <&sn65dsi86_in>;
                                    data-lanes = <0 1 2 3>;
+                                   qcom,te-source = "mdp_vsync_e";
                           };
                   };
            };

-- 
2.39.2