linux-kernel - [PATCH v1 1/2] dt-bindings: musb: mpfs: add ULPI external vbus support

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Message-ID: <20240531-fountain-plating-1d3739422a26@wendy>
Date: Fri, 31 May 2024 08:04:31 +0100
From: Conor Dooley <conor.dooley@...rochip.com>
To: <linux-usb@...r.kernel.org>
CC: <conor@...nel.org>, <conor.dooley@...rochip.com>, Daire McNamara
	<daire.mcnamara@...rochip.com>, Greg Kroah-Hartman
	<gregkh@...uxfoundation.org>, Rob Herring <robh@...nel.org>, "Krzysztof
 Kozlowski" <krzysztof.kozlowski+dt@...aro.org>, Bin Liu <b-liu@...com>,
	<linux-riscv@...ts.infradead.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH v1 1/2] dt-bindings: musb: mpfs: add ULPI external vbus support

Add a property to allow configuring the musb controller on PolarFire SoC
to use an external vbus for ULPI PHYs.

Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
---
 .../devicetree/bindings/usb/microchip,mpfs-musb.yaml       | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/microchip,mpfs-musb.yaml b/Documentation/devicetree/bindings/usb/microchip,mpfs-musb.yaml
index c5e9ce2e7bc2a..27b909de49922 100644
--- a/Documentation/devicetree/bindings/usb/microchip,mpfs-musb.yaml
+++ b/Documentation/devicetree/bindings/usb/microchip,mpfs-musb.yaml
@@ -34,6 +34,13 @@ properties:
   clocks:
     maxItems: 1
 
+  microchip,ext-vbus-drv:
+    description:
+      Some ULPI USB PHYs do not support an internal VBUS supply and driving
+      the CPEN pin requires the configuration of the UPLI_USE__EXTVBUS
+      bit in ULPI_BUSCONTROL.
+    $ref: /schemas/types.yaml#/definitions/flag
+
 required:
   - compatible
   - reg
-- 
2.43.2