lede/target/linux/qualcommax/patches-6.6/0155-dt-bindings-phy-qcom-uniphy-pcie-Document-PCIe-uniphy.patch
2025-02-07 12:04:28 +08:00

86 lines
2.0 KiB
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From: Varadarajan Narayanan <quic_varada@quicinc.com>
Date: Thu, 2 Jan 2025 17:00:15 +0530
Subject: [PATCH] dt-bindings: phy: qcom,uniphy-pcie: Document PCIe uniphy
From: Nitheesh Sekar <quic_nsekar@quicinc.com>
Document the Qualcomm UNIPHY PCIe 28LP present in IPQ5332.
Signed-off-by: Nitheesh Sekar <quic_nsekar@quicinc.com>
Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
---
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/qcom,ipq5332-uniphy-pcie-phy.yaml
@@ -0,0 +1,71 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/qcom,ipq5332-uniphy-pcie-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm UNIPHY PCIe 28LP PHY
+
+maintainers:
+ - Nitheesh Sekar <quic_nsekar@quicinc.com>
+ - Varadarajan Narayanan <quic_varada@quicinc.com>
+
+description:
+ PCIe and USB combo PHY found in Qualcomm IPQ5332 SoC
+
+properties:
+ compatible:
+ enum:
+ - qcom,ipq5332-uniphy-pcie-phy
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: pcie pipe clock
+ - description: pcie ahb clock
+
+ resets:
+ items:
+ - description: phy reset
+ - description: ahb reset
+ - description: cfg reset
+
+ "#phy-cells":
+ const: 0
+
+ "#clock-cells":
+ const: 0
+
+ num-lanes: true
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - resets
+ - "#phy-cells"
+ - "#clock-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/qcom,ipq5332-gcc.h>
+
+ pcie0_phy: phy@4b0000 {
+ compatible = "qcom,ipq5332-uniphy-pcie-phy";
+ reg = <0x004b0000 0x800>;
+
+ clocks = <&gcc GCC_PCIE3X1_0_PIPE_CLK>,
+ <&gcc GCC_PCIE3X1_PHY_AHB_CLK>;
+
+ resets = <&gcc GCC_PCIE3X1_0_PHY_BCR>,
+ <&gcc GCC_PCIE3X1_PHY_AHB_CLK_ARES>,
+ <&gcc GCC_PCIE3X1_0_PHY_PHY_BCR>;
+
+ #clock-cells = <0>;
+
+ #phy-cells = <0>;
+ };