dt-bindings: display: bridge: Repurpose lvds-encoder

In an effort to repurpose lvds-encoder.c to also serve the
function of LVDS decoders, we ended up defining a new "generic"
compatible string ("lvds-decoder"), therefore adapt the dt schema
to allow for the new compatible string.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[narmstrong: fixed port descriptions as acked with lpinchart]
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1573660292-10629-9-git-send-email-fabrizio.castro@bp.renesas.com

diff --git a/Documentation/devicetree/bindings/display/bridge/lvds-codec.yaml b/Documentation/devicetree/bindings/display/bridge/lvds-codec.yaml
new file mode 100644 (file)
index 0000000..f714fbd
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/lvds-codec.yaml
@@ -0,0 +1,129 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/lvds-codec.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Transparent LVDS encoders and decoders
+
+maintainers:
+  - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
+
+description: |
+  This binding supports transparent LVDS encoders and decoders that don't
+  require any configuration.
+
+  LVDS is a physical layer specification defined in ANSI/TIA/EIA-644-A. Multiple
+  incompatible data link layers have been used over time to transmit image data
+  to LVDS panels. This binding targets devices compatible with the following
+  specifications only.
+
+  [JEIDA] "Digital Interface Standards for Monitor", JEIDA-59-1999, February
+  1999 (Version 1.0), Japan Electronic Industry Development Association (JEIDA)
+  [LDI] "Open LVDS Display Interface", May 1999 (Version 0.95), National
+  Semiconductor
+  [VESA] "VESA Notebook Panel Standard", October 2007 (Version 1.0), Video
+  Electronics Standards Association (VESA)
+
+  Those devices have been marketed under the FPD-Link and FlatLink brand names
+  among others.
+
+properties:
+  compatible:
+    description: |
+      Must list the device specific compatible string first, followed by the
+      generic compatible string.
+    oneOf:
+      - items:
+        - enum:
+          - ti,ds90c185       # For the TI DS90C185 FPD-Link Serializer
+          - ti,ds90c187       # For the TI DS90C187 FPD-Link Serializer
+          - ti,sn75lvds83     # For the TI SN75LVDS83 FlatLink transmitter
+        - const: lvds-encoder # Generic LVDS encoder compatible fallback
+      - const: lvds-decoder   # Generic LVDS decoders compatible fallback
+
+  ports:
+    type: object
+    description: |
+      This device has two video ports. Their connections are modeled using the
+      OF graph bindings specified in Documentation/devicetree/bindings/graph.txt
+    properties:
+      port@0:
+        type: object
+        description: |
+          For LVDS encoders, port 0 is the parallel input
+          For LVDS decoders, port 0 is the LVDS input
+
+      port@1:
+        type: object
+        description: |
+          For LVDS encoders, port 1 is the LVDS output
+          For LVDS decoders, port 1 is the parallel output
+
+    required:
+      - port@0
+      - port@1
+
+  powerdown-gpios:
+    description:
+      The GPIO used to control the power down line of this device.
+    maxItems: 1
+
+required:
+  - compatible
+  - ports
+
+examples:
+  - |
+    lvds-encoder {
+      compatible = "ti,ds90c185", "lvds-encoder";
+
+      ports {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        port@0 {
+          reg = <0>;
+
+          lvds_enc_in: endpoint {
+            remote-endpoint = <&display_out_rgb>;
+          };
+        };
+
+        port@1 {
+          reg = <1>;
+
+          lvds_enc_out: endpoint {
+            remote-endpoint = <&lvds_panel_in>;
+          };
+        };
+      };
+    };
+
+  - |
+    lvds-decoder {
+      compatible = "lvds-decoder";
+
+      ports {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        port@0 {
+          reg = <0>;
+
+          lvds_dec_in: endpoint {
+            remote-endpoint = <&display_out_lvds>;
+          };
+        };
+
+        port@1 {
+          reg = <1>;
+
+          lvds_dec_out: endpoint {
+            remote-endpoint = <&rgb_panel_in>;
+          };
+        };
+      };
+    };
+
+...

diff --git a/Documentation/devicetree/bindings/display/bridge/lvds-transmitter.yaml b/Documentation/devicetree/bindings/display/bridge/lvds-transmitter.yaml
deleted file mode 100644 (file)
index 27de616..0000000
--- a/Documentation/devicetree/bindings/display/bridge/lvds-transmitter.yaml
+++ /dev/null
@@ -1,99 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-%YAML 1.2
----
-$id: http://devicetree.org/schemas/display/bridge/lvds-transmitter.yaml#
-$schema: http://devicetree.org/meta-schemas/core.yaml#
-
-title: Parallel to LVDS Encoder
-
-maintainers:
-  - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
-
-description: |
-  This binding supports the parallel to LVDS encoders that don't require any
-  configuration.
-
-  LVDS is a physical layer specification defined in ANSI/TIA/EIA-644-A. Multiple
-  incompatible data link layers have been used over time to transmit image data
-  to LVDS panels. This binding targets devices compatible with the following
-  specifications only.
-
-  [JEIDA] "Digital Interface Standards for Monitor", JEIDA-59-1999, February
-  1999 (Version 1.0), Japan Electronic Industry Development Association (JEIDA)
-  [LDI] "Open LVDS Display Interface", May 1999 (Version 0.95), National
-  Semiconductor
-  [VESA] "VESA Notebook Panel Standard", October 2007 (Version 1.0), Video
-  Electronics Standards Association (VESA)
-
-  Those devices have been marketed under the FPD-Link and FlatLink brand names
-  among others.
-
-properties:
-  compatible:
-    description: |
-      Must list the device specific compatible string first, followed by the
-      generic compatible string.
-    items:
-      - enum:
-        - ti,ds90c185       # For the TI DS90C185 FPD-Link Serializer
-        - ti,ds90c187       # For the TI DS90C187 FPD-Link Serializer
-        - ti,sn75lvds83     # For the TI SN75LVDS83 FlatLink transmitter
-      - const: lvds-encoder # Generic LVDS encoder compatible fallback
-
-  ports:
-    type: object
-    description: |
-      This device has two video ports. Their connections are modeled using the
-      OF graph bindings specified in Documentation/devicetree/bindings/graph.txt
-    properties:
-      port@0:
-        type: object
-        description: |
-          Port 0 is for parallel input
-
-      port@1:
-        type: object
-        description: |
-          Port 1 is for LVDS output
-
-    required:
-      - port@0
-      - port@1
-
-  powerdown-gpios:
-    description:
-      The GPIO used to control the power down line of this device.
-    maxItems: 1
-
-required:
-  - compatible
-  - ports
-
-examples:
-  - |
-    lvds-encoder {
-      compatible = "ti,ds90c185", "lvds-encoder";
-
-      ports {
-        #address-cells = <1>;
-        #size-cells = <0>;
-
-        port@0 {
-          reg = <0>;
-
-          lvds_enc_in: endpoint {
-            remote-endpoint = <&display_out_rgb>;
-          };
-        };
-
-        port@1 {
-          reg = <1>;
-
-          lvds_enc_out: endpoint {
-            remote-endpoint = <&lvds_panel_in>;
-          };
-        };
-      };
-    };
-
-...