[PATCH v4 3/6] dt-bindings: phy: realtek,usb2phy.yaml: extend for resets and RTL9607C support

Rustam Adilov
2026-04-06T18:13:18Z

Add the "realtek,rtl9607-usb2phy" compatible for USB2 PHY on the RTL9607C
SoC series.

Add a resets property to properties to describe the usb2phy reset line.

In RTL9607C, USB2 PHY reset line is from "IP Enable controller" which is
multipurpose and handle activating various SoC peripherals.

It is unclear whether RTD SoCs have something similar to that so set
the resets to false for these devices.

RTL9607C requires the "resets" to be specified so add the corresponding
if check for the "realtek,rtl9607-usb2phy" compatible.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Rustam Adilov <adilov@disroot.org>
---
.../bindings/phy/realtek,usb2phy.yaml | 25 ++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/phy/realtek,usb2phy.yaml b/Documentation/devicetree/bindings/phy/realtek,usb2phy.yaml
index 9911ada39ee7..7b50833c8e19 100644
--- a/Documentation/devicetree/bindings/phy/realtek,usb2phy.yaml
+++ b/Documentation/devicetree/bindings/phy/realtek,usb2phy.yaml
@@ -11,7 +11,8 @@ maintainers:
- Stanley Chang <stanley_chang@realtek.com>

description: |
- Realtek USB 2.0 PHY support the digital home center (DHC) RTD series SoCs.
+ Realtek USB 2.0 PHY support the digital home center (DHC) RTD and
+ RTL9607C series SoCs.
The USB 2.0 PHY driver is designed to support the XHCI controller. The SoCs
support multiple XHCI controllers. One PHY device node maps to one XHCI
controller.
@@ -57,6 +58,12 @@ description: |
XHCI controller#1 -- usb2phy -- phy#0
XHCI controller#2 -- usb2phy -- phy#0

+ RTL9607C SoCs USB
+ The USB architecture includes OHCI and EHCI controllers.
+ Both of them map to one USB2.0 PHY.
+ OHCI controller#0 -- usb2phy -- phy#0
+ EHCI controller#0 -- usb2phy -- phy#0
+
properties:
compatible:
enum:
@@ -69,6 +76,7 @@ properties:
- realtek,rtd1395-usb2phy-2port
- realtek,rtd1619-usb2phy
- realtek,rtd1619b-usb2phy
+ - realtek,rtl9607-usb2phy

reg:
items:
@@ -130,6 +138,9 @@ properties:
minimum: -8
maximum: 8

+ resets:
+ maxItems: 1
+
required:
- compatible
- reg
@@ -157,6 +168,18 @@ allOf:
then:
properties:
realtek,driving-level-compensate: false
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - realtek,rtl9607-usb2phy
+ then:
+ required:
+ - resets
+ else:
+ properties:
+ resets: false

additionalProperties: false

--
2.53.0