Commit cb8d4323 authored by Devarsh Thakkar's avatar Devarsh Thakkar Committed by Tomi Valkeinen
Browse files

dt-bindings: display: ti,am65x-dss: Add support for AM62L DSS 

The DSS controller on TI's AM62L SoC is an update from that on TI's
AM625/AM65x/AM62A7 SoC. The AM62L DSS [1] only supports a single display
pipeline using a single overlay manager, single video port and a single
video lite pipeline which does not support scaling.

The output of video port is routed to SoC boundary via DPI interface and
the DPI signals from the video port are also routed to DSI Tx controller
present within the SoC.

[1]: Section 11.7 (Display Subsystem and Peripherals)
Link : https://www.ti.com/lit/pdf/sprujb4



Reviewed-by: default avatarKrzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: default avatarJayesh Choudhary <j-choudhary@ti.com>
Reviewed-by: default avatarTomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: default avatarDevarsh Thakkar <devarsht@ti.com>
Link: https://lore.kernel.org/r/20250507180631.874930-2-devarsht@ti.com


Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ideasonboard.com>
parent ce6c4580

Documentation/devicetree/bindings/display/ti/ti,am65x-dss.yaml

+20 −1
Original line number Diff line number Diff line
@@ -12,18 +12,25 @@ maintainers: 
  - Tomi Valkeinen <tomi.valkeinen@ti.com>



description: |

  The AM625 and AM65x TI Keystone Display SubSystem with two output

  The AM625 and AM65x TI Keystone Display SubSystem has two output

  ports and two video planes. In AM65x DSS, the first video port

  supports 1 OLDI TX and in AM625 DSS, the first video port output is

  internally routed to 2 OLDI TXes. The second video port supports DPI

  format. The first plane is full video plane with all features and the

  second is a "lite plane" without scaling support.

  The AM62L display subsystem has a single output port which supports DPI

  format but it only supports single video "lite plane" which does not support

  scaling. The output port is routed to SoC boundary via DPI interface and same

  DPI signals are also routed internally to DSI Tx controller present within the

  SoC. Due to clocking limitations only one of the interface i.e. either DSI or

  DPI can be used at once.



properties:

  compatible:

    enum:

      - ti,am625-dss

      - ti,am62a7-dss

      - ti,am62l-dss

      - ti,am65x-dss



  reg:
@@ -91,6 +98,8 @@ properties: 
          For AM625 DSS, the internal DPI output port node from video

          port 1.

          For AM62A7 DSS, the port is tied off inside the SoC.

          For AM62L DSS, the DSS DPI output port node from video port 1

          or DSI Tx controller node connected to video port 1.



      port@1:

        $ref: /schemas/graph.yaml#/properties/port
@@ -123,6 +132,16 @@ allOf: 
        ports:

          properties:

            port@0: false

  - if:

      properties:

        compatible:

          contains:

            const: ti,am62l-dss

    then:

      properties:

        ports:

          properties:

            port@1: false



required:

  - compatible