[PATCH v2 2/3] dt-bindings: phy: qcom,snps-eusb2-phy: Add Nord bus clock

[Bartosz Golaszewski]

From: Shawn Guo <shengchao.guo@xxxxxxxxxxxxxxxx>

On Nord, the eUSB2 PHY registers are reached through the AHB2PHY_0
bridge, which is gated by NE_GCC_AHB2PHY_CLK. Allow an optional
second "bus" clock for the AHB2PHY bridge, require it for
qcom,nord-snps-eusb2-phy, and keep other compatibles at the single
"ref" clock. Since the Nord PHY needs the second bus clock, it's not
really compatible with sm8550 so drop the fall-back. This is fine as no
DT source uses it yet.

Fixes: 4d1f3875f328 ("dt-bindings: phy: qcom,snps-eusb2-phy: Document the Nord eUSB2 PHY")
Signed-off-by: Shawn Guo <shengchao.guo@xxxxxxxxxxxxxxxx>
[Bartosz: don't use the "qcom,sm8550-snps-eusb2-phy" fallback]
Co-developed-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxxxxxxxx>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxxxxxxxx>
---
 .../bindings/phy/qcom,snps-eusb2-phy.yaml          | 24 +++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-phy.yaml
index 931cd0e7d297e..fbea2129939f9 100644
--- a/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-phy.yaml
@@ -19,13 +19,13 @@ properties:
           - enum:
               - qcom,eliza-snps-eusb2-phy
               - qcom,milos-snps-eusb2-phy
-              - qcom,nord-snps-eusb2-phy
               - qcom,sar2130p-snps-eusb2-phy
               - qcom,sdx75-snps-eusb2-phy
               - qcom,sm8650-snps-eusb2-phy
               - qcom,x1e80100-snps-eusb2-phy
           - const: qcom,sm8550-snps-eusb2-phy
       - const: qcom,sm8550-snps-eusb2-phy
+      - const: qcom,nord-snps-eusb2-phy
 
   reg:
     maxItems: 1
@@ -34,12 +34,16 @@ properties:
     const: 0
 
   clocks:
+    minItems: 1
     items:
       - description: ref
+      - description: AHB2PHY bridge clock for register access
 
   clock-names:
+    minItems: 1
     items:
       - const: ref
+      - const: bus
 
   resets:
     maxItems: 1
@@ -77,6 +81,24 @@ allOf:
       required:
         - resets
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: qcom,nord-snps-eusb2-phy
+    then:
+      properties:
+        clocks:
+          minItems: 2
+        clock-names:
+          minItems: 2
+    else:
+      properties:
+        clocks:
+          maxItems: 1
+        clock-names:
+          maxItems: 1
+
 additionalProperties: false
 
 examples:

-- 
2.47.3