Add DT binding document for TI SN65DSI83 and SN65DSI84 DSI to LVDS bridge.
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Marek Vasut <marex@xxxxxxx>
Cc: Douglas Anderson <dianders@xxxxxxxxxxxx>
Cc: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx>
Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Stephen Boyd <swboyd@xxxxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
To: dri-devel@xxxxxxxxxxxxxxxxxxxxx
---
V2: Add compatible string for SN65DSI84, since this is now tested on it
V3: - Add 0x2c as valid i2c address
- Switch to schemas/graph.yaml
- Constraint data-lanes to <1>, <1 2>, <1 2 3>, <1 2 3 4> only
- Indent example by 4 spaces
- Handle dual-link LVDS with two ports and describe the second DSI
channel-B port as well. Based on the register defaults of DSI83
and DSI84, it is likely that the LVDS-channel-B and DSI-channel-B
hardware is present in all the chips, so just reuse port@0 and 2
for DSI83, port@0,2,3 for DSI84 and all of 0,1,2,3 for DSI85 when
that is supported
V4: - Fix typo in port@3 description
- Add RB from Linus Walleij
- Replace oneOf: and const with enum:
- ref /schemas/media/video-interfaces.yaml#
- Drop empty endpoint: and properties:
---
.../bindings/display/bridge/ti,sn65dsi83.yaml | 159 ++++++++++++++++++
1 file changed, 159 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/bridge/ti,sn65dsi83.yaml
diff --git a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi83.yaml b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi83.yaml
new file mode 100644
index 000000000000..d101233ae17f
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi83.yaml
@@ -0,0 +1,159 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/ti,sn65dsi83.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SN65DSI83 and SN65DSI84 DSI to LVDS bridge chip
+
+maintainers:
+ - Marek Vasut <marex@xxxxxxx>
+
+description: |
+ Texas Instruments SN65DSI83 1x Single-link MIPI DSI
+ to 1x Single-link LVDS
+ https://www.ti.com/lit/gpn/sn65dsi83
+ Texas Instruments SN65DSI84 1x Single-link MIPI DSI
+ to 1x Dual-link or 2x Single-link LVDS
+ https://www.ti.com/lit/gpn/sn65dsi84
+
+properties:
+ compatible:
+ enum:
+ - ti,sn65dsi83
+ - ti,sn65dsi84
+
+ reg:
+ enum:
+ - 0x2c
+ - 0x2d
+
+ enable-gpios:
+ maxItems: 1
+ description: GPIO specifier for bridge_en pin (active high).
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+
+ properties:
+ port@0:
+ $ref: /schemas/graph.yaml#/properties/port
+ description: Video port for MIPI DSI Channel-A input
+
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ data-lanes:
+ description: array of physical DSI data lane indexes.
+ minItems: 1
+ maxItems: 4
+ items:
+ - const: 1
+ - const: 2
+ - const: 3
+ - const: 4
+
+ port@1:
+ $ref: /schemas/graph.yaml#/properties/port
+ description: Video port for MIPI DSI Channel-B input
+
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ data-lanes:
+ description: array of physical DSI data lane indexes.
+ minItems: 1
+ maxItems: 4
+ items:
+ - const: 1
+ - const: 2
+ - const: 3
+ - const: 4
+
+ port@2:
+ $ref: /schemas/graph.yaml#/properties/port
+ description: Video port for LVDS Channel-A output (panel or bridge).
+
+ port@3:
+ $ref: /schemas/graph.yaml#/properties/port
+ description: Video port for LVDS Channel-B output (panel or bridge).
+
+ required:
+ - port@0
+ - port@2
+
+required:
+ - compatible
+ - reg
+ - enable-gpios
+ - ports
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: ti,sn65dsi83
+ then:
+ properties:
+ ports:
+ properties:
+ port@1: false
+ port@3: false
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: ti,sn65dsi84
+ then:
+ properties:
+ ports:
+ properties:
+ port@1: false
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ bridge@2d {
+ compatible = "ti,sn65dsi83";
+ reg = <0x2d>;
+
+ enable-gpios = <&gpio2 1 GPIO_ACTIVE_HIGH>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ endpoint {
+ remote-endpoint = <&dsi0_out>;
+ data-lanes = <1 2 3 4>;
+ };
+ };
+
+ port@2 {
+ reg = <2>;
+
+ endpoint {
+ remote-endpoint = <&panel_in_lvds>;
+ };
+ };
+ };
+ };
+ };
--
2.30.2
