linux-kernel - [PATCH v2 1/2] dt-bindings: usb: samsung,exynos-dwc3: add exynos7870 support

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Message-Id: <20250219-exynos7870-usb-v2-1-1de41a89c9d4@disroot.org>
Date: Wed, 19 Feb 2025 00:24:42 +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 v2 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",
"ctrl", and "ref".

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 2b3430cebe99106f3b6201ab31d4d9e3fcc55627..b034b5f553491d2ea253c5f7bba18739219c6f61 100644
--- a/Documentation/devicetree/bindings/usb/samsung,exynos-dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/samsung,exynos-dwc3.yaml
@@ -16,6 +16,7 @@ properties:
       - samsung,exynos5250-dwusb3
       - samsung,exynos5433-dwusb3
       - samsung,exynos7-dwusb3
+      - samsung,exynos7870-dwusb3
       - samsung,exynos850-dwusb3
 
   '#address-cells':
@@ -52,7 +53,6 @@ required:
   - clock-names
   - ranges
   - '#size-cells'
-  - vdd10-supply
   - vdd33-supply
 
 allOf:
@@ -72,6 +72,8 @@ allOf:
             - const: susp_clk
             - const: link_aclk
             - const: link_pclk
+      required:
+        - vdd10-supply
 
   - if:
       properties:
@@ -86,6 +88,8 @@ allOf:
         clock-names:
           items:
             - const: usbdrd30
+      required:
+        - vdd10-supply
 
   - if:
       properties:
@@ -103,6 +107,8 @@ allOf:
             - const: susp_clk
             - const: phyclk
             - const: pipe_pclk
+      required:
+        - vdd10-supply
 
   - if:
       properties:
@@ -119,6 +125,24 @@ 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: ctrl
+            - const: ref
 
   - if:
       properties:
@@ -134,6 +158,8 @@ allOf:
           items:
             - const: bus_early
             - const: ref
+      required:
+        - vdd10-supply
 
 additionalProperties: false
 

-- 
2.48.1