linux-kernel - [PATCH 2/4] dt-bindings: usb: dwc2: add utmi optional clock

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Message-ID: <20230412151831.3069211-3-fabrice.gasnier@foss.st.com>
Date:   Wed, 12 Apr 2023 17:18:29 +0200
From:   Fabrice Gasnier <fabrice.gasnier@...s.st.com>
To:     <hminas@...opsys.com>, <gregkh@...uxfoundation.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <alexandre.torgue@...s.st.com>
CC:     <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <amelie.delaunay@...s.st.com>, <fabrice.gasnier@...s.st.com>
Subject: [PATCH 2/4] dt-bindings: usb: dwc2: add utmi optional clock

utmi clock is typically provided by PHY output. Add this optional clock,
as the core could use other clocks depending on the SoC where it's used.
This is needed on stm32mp15, when using the integrated full-speed PHY.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@...s.st.com>
---
 Documentation/devicetree/bindings/usb/dwc2.yaml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/usb/dwc2.yaml b/Documentation/devicetree/bindings/usb/dwc2.yaml
index 371ba93f3ce5..6f3c2d319b9b 100644
--- a/Documentation/devicetree/bindings/usb/dwc2.yaml
+++ b/Documentation/devicetree/bindings/usb/dwc2.yaml
@@ -75,11 +75,14 @@ properties:
     maxItems: 1
 
   clocks:
-    maxItems: 1
+    minItems: 1
+    maxItems: 2
 
   clock-names:
     items:
       - const: otg
+      - const: utmi_clk
+    minItems: 1
 
   disable-over-current:
     type: boolean
-- 
2.25.1