linux-kernel - [PATCH v3 1/2] dt-bindings: usb: samsung,exynos-dwc3: add exynos7870 support

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Message-Id: <20250301-exynos7870-usb-v3-1-f01697165d19@disroot.org>
Date: Sat, 01 Mar 2025 01:10:33 +0530
From: Kaustabh Chakraborty <kauschluss@...root.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Alim Akhtar <alim.akhtar@...sung.com>, 
 Thinh Nguyen <Thinh.Nguyen@...opsys.com>
Cc: Krzysztof Kozlowski <krzk@...nel.org>, linux-usb@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Kaustabh Chakraborty <kauschluss@...root.org>
Subject: [PATCH v3 1/2] dt-bindings: usb: samsung,exynos-dwc3: add
 exynos7870 support

Document compatible string for Exynos7870 DWC3-compatible USB 2.0
driver. The devicetree node requires three clocks, named "bus_early",
"ref", and "ctrl".

Unlike other variants, Exynos7870's USB controller requires a single
3.0V regulator. Assert that the other 1.0V regulator requirement is
enforced on variants individually other than Exynos7870's.

Signed-off-by: Kaustabh Chakraborty <kauschluss@...root.org>
---
 .../bindings/usb/samsung,exynos-dwc3.yaml          | 28 +++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/usb/samsung,exynos-dwc3.yaml b/Documentation/devicetree/bindings/usb/samsung,exynos-dwc3.yaml
index f11e767a8abe1d2fb7faa6d6b5be09970c5c9b37..256bee2a03ca189f360e2b677f101dce25a0f368 100644
--- a/Documentation/devicetree/bindings/usb/samsung,exynos-dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/samsung,exynos-dwc3.yaml
@@ -17,6 +17,7 @@ properties:
           - samsung,exynos5250-dwusb3
           - samsung,exynos5433-dwusb3
           - samsung,exynos7-dwusb3
+          - samsung,exynos7870-dwusb3
           - samsung,exynos850-dwusb3
       - items:
           - const: samsung,exynos990-dwusb3
@@ -56,7 +57,6 @@ required:
   - clock-names
   - ranges
   - '#size-cells'
-  - vdd10-supply
   - vdd33-supply
 
 allOf:
@@ -76,6 +76,8 @@ allOf:
             - const: susp_clk
             - const: link_aclk
             - const: link_pclk
+      required:
+        - vdd10-supply
 
   - if:
       properties:
@@ -90,6 +92,8 @@ allOf:
         clock-names:
           items:
             - const: usbdrd30
+      required:
+        - vdd10-supply
 
   - if:
       properties:
@@ -107,6 +111,8 @@ allOf:
             - const: susp_clk
             - const: phyclk
             - const: pipe_pclk
+      required:
+        - vdd10-supply
 
   - if:
       properties:
@@ -123,6 +129,24 @@ allOf:
             - const: usbdrd30
             - const: usbdrd30_susp_clk
             - const: usbdrd30_axius_clk
+      required:
+        - vdd10-supply
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynos7870-dwusb3
+    then:
+      properties:
+        clocks:
+          minItems: 3
+          maxItems: 3
+        clock-names:
+          items:
+            - const: bus_early
+            - const: ref
+            - const: ctrl
 
   - if:
       properties:
@@ -138,6 +162,8 @@ allOf:
           items:
             - const: bus_early
             - const: ref
+      required:
+        - vdd10-supply
 
 additionalProperties: false
 

-- 
2.48.1