[PATCH v1] dt-bindings: usb: mpfs-musb: permit resets

[PATCH v1] dt-bindings: usb: mpfs-musb: permit resets

[Conor Dooley]

From: Conor Dooley <conor.dooley@microchip.com>

The musb IP on mpfs and pic64gx has a reset pin, but until now this has
been undocumented because platform firmware takes the block out of reset
on first-party boards (or those using modified versions of the vendor
firmware), but not all boards may take this approach. Permit providing a
reset in devicetree for Linux, or other devicetree-consuming software,
to use.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
---
CC: Conor Dooley <conor.dooley@microchip.com>
CC: Daire McNamara <daire.mcnamara@microchip.com>
CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CC: Rob Herring <robh@kernel.org>
CC: Krzysztof Kozlowski <krzk+dt@kernel.org>
CC: linux-riscv@lists.infradead.org
CC: linux-usb@vger.kernel.org
CC: devicetree@vger.kernel.org
CC: linux-kernel@vger.kernel.org
---
 Documentation/devicetree/bindings/usb/microchip,mpfs-musb.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/microchip,mpfs-musb.yaml b/Documentation/devicetree/bindings/usb/microchip,mpfs-musb.yaml
index a812317d80893..c4e1c2d73bdb3 100644
--- a/Documentation/devicetree/bindings/usb/microchip,mpfs-musb.yaml
+++ b/Documentation/devicetree/bindings/usb/microchip,mpfs-musb.yaml
@@ -37,6 +37,9 @@ properties:
   clocks:
     maxItems: 1
 
+  resets:
+    maxItems: 1
+
   microchip,ext-vbus-drv:
     description:
       Some ULPI USB PHYs do not support an internal VBUS supply and driving
-- 
2.51.0


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Re: [PATCH v1] dt-bindings: usb: mpfs-musb: permit resets

[Krzysztof Kozlowski]

On Tue, Mar 03, 2026 at 04:37:39PM +0000, Conor Dooley wrote:
> From: Conor Dooley <conor.dooley@microchip.com>
> 
> The musb IP on mpfs and pic64gx has a reset pin, but until now this has
> been undocumented because platform firmware takes the block out of reset
> on first-party boards (or those using modified versions of the vendor
> firmware), but not all boards may take this approach. Permit providing a
> reset in devicetree for Linux, or other devicetree-consuming software,
> to use.
> 
> Signed-off-by: Conor Dooley <conor.dooley@microchip.com>

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>

Best regards,
Krzysztof


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