linux-kernel - [PATCH v6 3/5] dt-bindings: PCI: qcom: Document the IPQ5332 PCIe controller

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Message-ID: <20250108055842.2042876-4-quic_varada@quicinc.com>
Date: Wed, 8 Jan 2025 11:28:40 +0530
From: Varadarajan Narayanan <quic_varada@...cinc.com>
To: <bhelgaas@...gle.com>, <lpieralisi@...nel.org>, <kw@...ux.com>,
        <manivannan.sadhasivam@...aro.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>, <vkoul@...nel.org>,
        <kishon@...nel.org>, <andersson@...nel.org>, <konradybcio@...nel.org>,
        <p.zabel@...gutronix.de>, <dmitry.baryshkov@...aro.org>,
        <quic_nsekar@...cinc.com>, <quic_varada@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <linux-pci@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-phy@...ts.infradead.org>
Subject: [PATCH v6 3/5] dt-bindings: PCI: qcom: Document the IPQ5332 PCIe controller

Document the PCIe controller on IPQ5332 platform. IPQ5332 will
use IPQ9574 as the fall back compatible.

All DT entries except "reg" is similar between ipq5332 and
ipq9574. ipq9574 has 5 registers while ipq5332 has 6. MHI is the
additional (i.e. sixth entry). Since this matches with the
sdx55's "reg" definition which allows for 5 or 6 registers,
combine ipq9574 and ipq5332 with sdx55. Without this
dt_binding_check fails.

Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
---
v6: Commit message update only. Add info regarding the moving of
    ipq9574 from 5 "reg" definition to 5 or 6 reg definition.

v5: Re-arrange 5332 and 9574 compatibles to handle fallback usage in dts

v4: * v3 reused ipq9574 bindings for ipq5332. Instead add one for ipq5332
    * DTS uses ipq9574 compatible as fallback. Hence move ipq9574 to be able
      to use the 'reg' section for both ipq5332 and ipq9574. Else, dtbs_check
      and dt_binding_check flag errors.
---
 Documentation/devicetree/bindings/pci/qcom,pcie.yaml | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
index bd87f6b49d68..9f37eca1ce0d 100644
--- a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
@@ -26,7 +26,6 @@ properties:
           - qcom,pcie-ipq8064-v2
           - qcom,pcie-ipq8074
           - qcom,pcie-ipq8074-gen3
-          - qcom,pcie-ipq9574
           - qcom,pcie-msm8996
           - qcom,pcie-qcs404
           - qcom,pcie-sdm845
@@ -34,6 +33,10 @@ properties:
       - items:
           - const: qcom,pcie-msm8998
           - const: qcom,pcie-msm8996
+      - items:
+          - enum:
+              - qcom,pcie-ipq5332
+          - const: qcom,pcie-ipq9574
 
   reg:
     minItems: 4
@@ -165,7 +168,6 @@ allOf:
             enum:
               - qcom,pcie-ipq6018
               - qcom,pcie-ipq8074-gen3
-              - qcom,pcie-ipq9574
     then:
       properties:
         reg:
@@ -206,6 +208,8 @@ allOf:
         compatible:
           contains:
             enum:
+              - qcom,pcie-ipq5332
+              - qcom,pcie-ipq9574
               - qcom,pcie-sdx55
     then:
       properties:
@@ -407,6 +411,7 @@ allOf:
         compatible:
           contains:
             enum:
+              - qcom,pcie-ipq5332
               - qcom,pcie-ipq9574
     then:
       properties:
@@ -555,6 +560,7 @@ allOf:
               enum:
                 - qcom,pcie-apq8064
                 - qcom,pcie-ipq4019
+                - qcom,pcie-ipq5332
                 - qcom,pcie-ipq8064
                 - qcom,pcie-ipq8064v2
                 - qcom,pcie-ipq8074
-- 
2.34.1