[v4] Add support for handling PCIe M.2 Key E connectors in devicetree

[PATCH v4 4/9] dt-bindings: serial: Document the graph port

Posted by Manivannan Sadhasivam via B4 Relay 3 weeks, 6 days ago

From: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>

A serial controller could be connected to an external connector like PCIe
M.2 for controlling the serial interface of the card. Hence, document the
OF graph port.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
---
 Documentation/devicetree/bindings/serial/serial.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/serial/serial.yaml b/Documentation/devicetree/bindings/serial/serial.yaml
index 6aa9cfae417b..96eb1de8771e 100644
--- a/Documentation/devicetree/bindings/serial/serial.yaml
+++ b/Documentation/devicetree/bindings/serial/serial.yaml
@@ -87,6 +87,9 @@ properties:
     description:
       TX FIFO threshold configuration (in bytes).
 
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+
 patternProperties:
   "^(bluetooth|bluetooth-gnss|embedded-controller|gnss|gps|mcu|onewire)$":
     if:

-- 
2.48.1

Re: [PATCH v4 4/9] dt-bindings: serial: Document the graph port

Posted by Rob Herring (Arm) 3 weeks, 5 days ago

On Mon, 12 Jan 2026 21:56:03 +0530, Manivannan Sadhasivam wrote:
> A serial controller could be connected to an external connector like PCIe
> M.2 for controlling the serial interface of the card. Hence, document the
> OF graph port.
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
> ---
>  Documentation/devicetree/bindings/serial/serial.yaml | 3 +++
>  1 file changed, 3 insertions(+)
> 

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>

Re: [PATCH v4 4/9] dt-bindings: serial: Document the graph port

Posted by Bartosz Golaszewski 3 weeks, 5 days ago

On Mon, 12 Jan 2026 17:26:03 +0100, Manivannan Sadhasivam via B4 Relay
<devnull+manivannan.sadhasivam.oss.qualcomm.com@kernel.org> said:
> From: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
>
> A serial controller could be connected to an external connector like PCIe
> M.2 for controlling the serial interface of the card. Hence, document the
> OF graph port.
>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
> ---
>  Documentation/devicetree/bindings/serial/serial.yaml | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/serial/serial.yaml b/Documentation/devicetree/bindings/serial/serial.yaml
> index 6aa9cfae417b..96eb1de8771e 100644
> --- a/Documentation/devicetree/bindings/serial/serial.yaml
> +++ b/Documentation/devicetree/bindings/serial/serial.yaml
> @@ -87,6 +87,9 @@ properties:
>      description:
>        TX FIFO threshold configuration (in bytes).
>
> +  port:
> +    $ref: /schemas/graph.yaml#/properties/port
> +
>  patternProperties:
>    "^(bluetooth|bluetooth-gnss|embedded-controller|gnss|gps|mcu|onewire)$":
>      if:
>
> --
> 2.48.1
>
>
>

Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>