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dt-bindings: phy: renesas,usb2-phy: Document mux-states property

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Some Renesas SoCs, such as RZ/G3E, provide a USB2.0 OTG PHY with
configurable VBUS control through a multiplexed hardware register.
This register allows selecting the VBUS source via a mux control
line exposed by the PHY.

To represent this hardware configuration, support the standard
`mux-states` property in the Renesas USB2 PHY binding.
This allows the DeviceTree to model the VBUS source selection as
a mux, consistent with generic binding conventions.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Link: https://patch.msgid.link/36d448dd10bbb2bbfa5b1b6b6e3fee86c34d01aa.1766405010.git.tommaso.merciai.xr@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Tommaso Merciai 2025-12-22 14:43:42 +01:00 committed by Vinod Koul
parent 274038b82f
commit cd597ce646
1 changed files with 5 additions and 0 deletions
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5
Documentation/devicetree/bindings/phy/renesas,usb2-phy.yaml
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@ -102,6 +102,11 @@ properties:
dr_mode: true
mux-states:
description:
phandle to a mux controller node that select the source for USB VBUS.
maxItems: 1
if:
properties:
compatible: