linux-kernel - [PATCH 2/7] dt-bindings: phy: Add the M31 based eUSB2 PHY bindings

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Message-ID: <20250113-sm8750_usb_master-v1-2-09afe1dc2524@quicinc.com>
Date: Mon, 13 Jan 2025 13:52:08 -0800
From: Melody Olvera <quic_molvera@...cinc.com>
To: Vinod Koul <vkoul@...nel.org>, Kishon Vijay Abraham I <kishon@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Wesley Cheng <quic_wcheng@...cinc.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Philipp Zabel
	<p.zabel@...gutronix.de>,
        Catalin Marinas <catalin.marinas@....com>,
        "Will
 Deacon" <will@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        "Konrad
 Dybcio" <konradybcio@...nel.org>,
        Satya Durga Srinivasu Prabhala
	<quic_satyap@...cinc.com>,
        Trilok Soni <quic_tsoni@...cinc.com>
CC: <linux-arm-msm@...r.kernel.org>, <linux-phy@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-usb@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
        "Melody
 Olvera" <quic_molvera@...cinc.com>
Subject: [PATCH 2/7] dt-bindings: phy: Add the M31 based eUSB2 PHY bindings

From: Wesley Cheng <quic_wcheng@...cinc.com>

On SM8750, the M31 eUSB2 PHY is being used to support USB2. Add the
binding definition for the PHY driver.

Signed-off-by: Wesley Cheng <quic_wcheng@...cinc.com>
Signed-off-by: Melody Olvera <quic_molvera@...cinc.com>
---
 .../bindings/phy/qcom,m31-eusb2-phy.yaml           | 84 ++++++++++++++++++++++
 1 file changed, 84 insertions(+)

diff --git a/Documentation/devicetree/bindings/phy/qcom,m31-eusb2-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,m31-eusb2-phy.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..5eba90e270e2b90a71cc8072fefe5994cdd1f605
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/qcom,m31-eusb2-phy.yaml
@@ -0,0 +1,84 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/qcom,m31-eusb2-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm M31 eUSB2 phy
+
+maintainers:
+  - Wesley Cheng <quic_wcheng@...cinc.com>
+
+description:
+  M31 based eUSB2 controller, which supports LS/FS/HS usb connectivity
+  on Qualcomm chipsets.  It is paired with a eUSB2 repeater.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - qcom,sm8750-m31-eusb2-phy
+
+  reg:
+    maxItems: 1
+
+  "#phy-cells":
+    const: 0
+
+  clocks:
+    items:
+      - description: reference clock
+
+  clock-names:
+    items:
+      - const: ref
+
+  resets:
+    maxItems: 1
+
+  phys:
+    maxItems: 1
+    description:
+      Phandle to eUSB2 repeater
+
+  vdd-supply:
+    description:
+      Phandle to 0.88V regulator supply to PHY digital circuit.
+
+  vdda12-supply:
+    description:
+      Phandle to 1.2V regulator supply to PHY refclk pll block.
+
+required:
+  - compatible
+  - reg
+  - "#phy-cells"
+  - clocks
+  - clock-names
+  - vdd-supply
+  - vdda12-supply
+  - resets
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,sm8750-gcc.h>
+    #include <dt-bindings/clock/qcom,rpmh.h>
+    #include <dt-bindings/clock/qcom,sm8750-tcsr.h>
+
+    usb_1_hsphy: phy@...3000 {
+        compatible = "qcom,sm8750-m31-eusb2-phy";
+        reg = <0x88e3000 0x29c>;
+
+        clocks = <&tcsrcc TCSR_USB2_CLKREF_EN>;
+        clock-names = "ref";
+
+        resets = <&gcc GCC_QUSB2PHY_PRIM_BCR>;
+
+        #phy-cells = <0>;
+
+        vdd-supply = <&vreg_l2d_0p88>;
+        vdda12-supply = <&vreg_l3g_1p2>;
+
+    };

-- 
2.46.1