linux-kernel - [PATCH v7 1/5] dt-bindings: phy: qcom,m31: Document qcom,m31 USB phy

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Message-ID: <0d42f556ab28123b2b508521a0c79c7597b8b0fd.1691660905.git.quic_varada@quicinc.com>
Date:   Thu, 10 Aug 2023 15:26:04 +0530
From:   Varadarajan Narayanan <quic_varada@...cinc.com>
To:     <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <vkoul@...nel.org>,
        <kishon@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <catalin.marinas@....com>, <will@...nel.org>,
        <p.zabel@...gutronix.de>, <arnd@...db.de>,
        <geert+renesas@...der.be>, <nfraprado@...labora.com>,
        <rafal@...ecki.pl>, <peng.fan@....com>,
        <quic_srichara@...cinc.com>, <quic_varada@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <linux-phy@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH v7 1/5] dt-bindings: phy: qcom,m31: Document qcom,m31 USB phy

Document the M31 USB2 phy present in IPQ5332.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Co-developed-by: Sricharan Ramabadhran <quic_srichara@...cinc.com>
Signed-off-by: Sricharan Ramabadhran <quic_srichara@...cinc.com>
Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
---
v7:
	Move 'compatible' to be the first entry
	In the example have 'usb-phy' instead of 'usb2-phy'
	Add 'Reviewed-by: Krzysztof Kozlowski'
	'make dt_binding_check DT_SCHEMA_FILES=qcom,ipq5332-usb-hsphy.yaml' passed
	'make CHECK_DTBS=y DT_SCHEMA_FILES=qcom,ipq5332-usb-hsphy.yaml dtbs_check' passed
v6:
	Add 'Co-developed-by: Sricharan'
	Add 'const' to compatible, vdd-supply
	Remove label and use usb2-phy for nodename in the example
v5:
	Add '#phy-cells', to be able to use generic phy
	Remove 'Reviewed-by: Krzysztof Kozlowski' due to above change
v4:
	Move M31 URL to description
	Remove maxItems and relevant content from clock-names
	Change node name to generic name
	'make dt_binding_check DT_SCHEMA_FILES=qcom' passed
v3:
	Incorporate review comments. Will bring in ipq5018 compatible
	string while posting ipq5018 usb patchset.

v1:
	Rename qcom,m31.yaml -> qcom,ipq5332-usb-hsphy.yaml
	Drop default binding "m31,usb-hsphy"
	Add clock
	Remove 'oneOf' from compatible
	Remove 'qscratch' region from register space as it is not needed
	Remove reset-names
	Fix the example definition
---
 .../bindings/phy/qcom,ipq5332-usb-hsphy.yaml       | 59 ++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/qcom,ipq5332-usb-hsphy.yaml

diff --git a/Documentation/devicetree/bindings/phy/qcom,ipq5332-usb-hsphy.yaml b/Documentation/devicetree/bindings/phy/qcom,ipq5332-usb-hsphy.yaml
new file mode 100644
index 0000000..2671a04
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/qcom,ipq5332-usb-hsphy.yaml
@@ -0,0 +1,59 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/qcom,ipq5332-usb-hsphy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: M31 USB PHY
+
+maintainers:
+  - Sricharan Ramabadhran <quic_srichara@...cinc.com>
+  - Varadarajan Narayanan <quic_varada@...cinc.com>
+
+description:
+  USB M31 PHY (https://www.m31tech.com) found in Qualcomm
+  IPQ5018, IPQ5332 SoCs.
+
+properties:
+  compatible:
+    items:
+      - const: qcom,ipq5332-usb-hsphy
+
+  "#phy-cells":
+    const: 0
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: cfg_ahb
+
+  resets:
+    maxItems: 1
+
+  vdd-supply:
+    description:
+      Phandle to 5V regulator supply to PHY digital circuit.
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,ipq5332-gcc.h>
+    usb-phy@...00 {
+        compatible = "qcom,ipq5332-usb-hsphy";
+        reg = <0x0007b000 0x12c>;
+
+        clocks = <&gcc GCC_USB0_PHY_CFG_AHB_CLK>;
+        clock-names = "cfg_ahb";
+
+        #phy-cells = <0>;
+
+        resets = <&gcc GCC_QUSB2_0_PHY_BCR>;
+
+        vdd-supply = <&regulator_fixed_5p0>;
+    };
-- 
2.7.4