Re: [PATCH 1/3] dt-bindings: extcon: ptn5150: Describe the USB connector

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On 12/12/23 12:27, Fabio Estevam wrote:
From: Fabio Estevam <festevam@xxxxxxx>

PTN5150 supports USB Type-C connector, so improve the bindings by
allowing to describe the connector like it is done on nxp,ptn5110.yaml.

Signed-off-by: Fabio Estevam <festevam@xxxxxxx>
---
  Documentation/devicetree/bindings/extcon/extcon-ptn5150.yaml | 5 +++++
  1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/extcon/extcon-ptn5150.yaml b/Documentation/devicetree/bindings/extcon/extcon-ptn5150.yaml
index d5cfa32ea52d..3837da7416e9 100644
--- a/Documentation/devicetree/bindings/extcon/extcon-ptn5150.yaml
+++ b/Documentation/devicetree/bindings/extcon/extcon-ptn5150.yaml
@@ -37,6 +37,11 @@ properties:
        GPIO pin (output) used to control VBUS. If skipped, no such control
        takes place.
+ connector:
+    type: object
+    $ref: /schemas/connector/usb-connector.yaml#
+    unevaluatedProperties: false
+

If I read drivers/usb/roles/class.c usb_role_switch_get() implementation right, that function is doing an OF graph look up and expects a port {} subnode for that purpose. The drivers/extcon/extcon-ptn5150.c ptn5150_i2c_probe() calls usb_role_switch_get(), so I would expect the ptn5150 DT node should contain a port {} subnode, not a connector subnode.

I think that's what should be done here -- update this PTN5150 binding document and describe the port {} subnode. The two DT patches are not needed and are in fact wrong ; at least the PDK3 one breaks PDK3 USB-C operation as the usb_role_switch_get() look up fails in the PTN5150 driver with that DT patch applied.




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