Re: [PATCH 1/2] dt-bindings: display: bridge: lt9211: Add Lontium LT9211 bridge driver

On Wed, Mar 30, 2022 at 11:22:30PM +0200, Marek Vasut wrote:

Add bindings for Lontium LT9211 Single/Dual-Link DSI/LVDS or Single DPI to Single-link/Dual-Link DSI/LVDS or Single DPI bridge. This chip is highly capable at converting formats, but sadly it is also highly undocumented.

Signed-off-by: Marek Vasut marex@denx.de Cc: Laurent Pinchart laurent.pinchart@ideasonboard.com Cc: Lucas Stach l.stach@pengutronix.de Cc: Maxime Ripard maxime@cerno.tech Cc: Rob Herring robh+dt@kernel.org Cc: Robert Foss robert.foss@linaro.org Cc: Sam Ravnborg sam@ravnborg.org Cc: Thomas Zimmermann tzimmermann@suse.de Cc: devicetree@vger.kernel.org To: dri-devel@lists.freedesktop.org

---

.../display/bridge/lontium,lt9211.yaml | 117 ++++++++++++++++++ 1 file changed, 117 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/bridge/lontium,lt9211.yaml

diff --git a/Documentation/devicetree/bindings/display/bridge/lontium,lt9211.yaml b/Documentation/devicetree/bindings/display/bridge/lontium,lt9211.yaml new file mode 100644 index 000000000000..2faa855b3824 --- /dev/null +++ b/Documentation/devicetree/bindings/display/bridge/lontium,lt9211.yaml @@ -0,0 +1,117 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/bridge/lontium,lt9211.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml#

+title: Lontium LT9211 DSI/LVDS/DPI to DSI/LVDS/DPI bridge.

+maintainers:

• • Marek Vasut marex@denx.de

+description: |

• The LT9211 are bridge devices which convert Single/Dual-Link DSI/LVDS
• or Single DPI to Single/Dual-Link DSI/LVDS or Single DPI.

+properties:

• compatible:
• enum:

•  - lontium,lt9211
  

• reg:
• maxItems: 1
• interrupts:
• maxItems: 1
• reset-gpios:
• maxItems: 1
• description: GPIO connected to active high RESET pin.
• vccio-supply:
• description: Regulator for 1.8V IO power.
• ports:
• $ref: /schemas/graph.yaml#/properties/ports
• properties:

•  port@0:
  

•    $ref: /schemas/graph.yaml#/properties/port
  

•    description:
  

•      Primary MIPI DSI port-1 for MIPI input or
  

•      LVDS port-1 for LVDS input or DPI input.
  

•  port@1:
  

•    $ref: /schemas/graph.yaml#/properties/port
  

•    description:
  

•      Additional MIPI port-2 for MIPI input or LVDS port-2
  

•      for LVDS input. Used in combination with primary
  

•      port-1 to drive higher resolution displays
  

•  port@2:
  

•    $ref: /schemas/graph.yaml#/properties/port
  

•    description:
  

•      Primary MIPI DSI port-1 for MIPI output or
  

•      LVDS port-1 for LVDS output or DPI output.
  

•  port@3:
  

•    $ref: /schemas/graph.yaml#/properties/port
  

•    description:
  

•      Additional MIPI port-2 for MIPI output or LVDS port-2
  

•      for LVDS output. Used in combination with primary
  

•      port-1 to drive higher resolution displays.
  

• required:

•  - port@0
  

•  - port@2
  

+required:

• • compatible
• • reg
• • vccio-supply
• • ports

+additionalProperties: false

+examples:

• • |
• #include <dt-bindings/gpio/gpio.h>
• #include <dt-bindings/interrupt-controller/irq.h>
• i2c10 {

i2c {

With that,

Reviewed-by: Rob Herring robh@kernel.org

•  #address-cells = <1>;
  

•  #size-cells = <0>;
  

•  hdmi-bridge@3b {
  

•    compatible = "lontium,lt9211";
  

•    reg = <0x3b>;
  

•    reset-gpios = <&tlmm 128 GPIO_ACTIVE_HIGH>;
  

•    interrupts-extended = <&tlmm 84 IRQ_TYPE_EDGE_FALLING>;
  

•    vccio-supply = <&lt9211_1v8>;
  

•    ports {
  

•      #address-cells = <1>;
  

•      #size-cells = <0>;
  

•      port@0 {
  

•        reg = <0>;
  

•        endpoint {
  

•          remote-endpoint = <&dsi0_out>;
  

•        };
  

•      };
  

•      port@2 {
  

•        reg = <2>;
  

•        endpoint {
  

•          remote-endpoint = <&panel_in_lvds>;
  

•        };
  

•      };
  

•    };
  

•  };
  

• };

+...

2.35.1