[PATCH v2] dt-bindings: phy: sc8280xp-qmp-pcie: Disallow bifurcation register on Purwa

[Konrad Dybcio]

From: Konrad Dybcio <konrad.dybcio at oss.qualcomm.com>

Neither of the two Gen4x4 PHYs found on Purwa supports bifurcation.
The PHY is however physically laid out as if it were to, since there
are two separate ports (A/B).

Split out a new if-then block to un-require the bifurcation register
handle to squash this warning:

purwa-iot-evk.dtb: phy at 1bd4000 (qcom,x1p42100-qmp-gen4x4-pcie-phy): 'qcom,4ln-config-sel' is a required property

Fixes: 2e1ffd4c1805 ("dt-bindings: phy: qcom,qmp-pcie: Add X1P42100 PCIe Gen4x4 PHY")
Reported-by: Rob Herring <robh at kernel.org>
Closes: https://lore.kernel.org/linux-arm-msm/176857775469.1631885.16133311938753588148.robh@kernel.org/
Signed-off-by: Konrad Dybcio <konrad.dybcio at oss.qualcomm.com>
---
Changes in v2:
- Rebase
- Don't drop the mention of the warning, as it now actually exists in
  the tree..
- Link to v1: https://lore.kernel.org/r/20260119-topic-purwa_phy_shutup_warning-v1-1-997a692b31c6@oss.qualcomm.com

To: Vinod Koul <vkoul at kernel.org>
To: Neil Armstrong <neil.armstrong at linaro.org>
To: Rob Herring <robh at kernel.org>
To: Krzysztof Kozlowski <krzk+dt at kernel.org>
To: Conor Dooley <conor+dt at kernel.org>
To: Konrad Dybcio <konrad.dybcio at oss.qualcomm.com>
Cc: Krzysztof Kozlowski <krzk at kernel.org>
Cc: linux-arm-msm at vger.kernel.org
Cc: linux-phy at lists.infradead.org
Cc: devicetree at vger.kernel.org
Cc: linux-kernel at vger.kernel.org
---
 .../devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml
index 3a35120a77ec..431e8cb5df84 100644
--- a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml
@@ -136,13 +136,22 @@ allOf:
           items:
             - description: port a
             - description: port b
-      required:
-        - qcom,4ln-config-sel
     else:
       properties:
         reg:
           maxItems: 1
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,sc8280xp-qmp-gen3x4-pcie-phy
+              - qcom,x1e80100-qmp-gen4x4-pcie-phy
+    then:
+      required:
+        - qcom,4ln-config-sel
+
   - if:
       properties:
         compatible:

---
base-commit: 49e02880ec0a8c378e811bc9d85da188d7c6204c
change-id: 20260119-topic-purwa_phy_shutup_warning-891e8aab29f2

Best regards,
--  
Konrad Dybcio <konrad.dybcio at oss.qualcomm.com>