linux-kernel - [PATCH v3 1/2] dt-bindings: phy: Add Qualcomm Synopsys High-Speed USB PHY binding

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Message-Id: <20181116145559.31876-2-shawn.guo@linaro.org>
Date:   Fri, 16 Nov 2018 22:55:58 +0800
From:   Shawn Guo <shawn.guo@...aro.org>
To:     Kishon Vijay Abraham I <kishon@...com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Sriharsha Allenki <sallenki@...eaurora.org>,
        Anu Ramanathan <anur@...eaurora.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Vinod Koul <vkoul@...nel.org>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Shawn Guo <shawn.guo@...aro.org>
Subject: [PATCH v3 1/2] dt-bindings: phy: Add Qualcomm Synopsys High-Speed USB PHY binding

From: Sriharsha Allenki <sallenki@...eaurora.org>

It adds bindings for Synopsys 28nm femto phy controller that supports
LS/FS/HS usb connectivity on Qualcomm chipsets.

Signed-off-by: Sriharsha Allenki <sallenki@...eaurora.org>
Signed-off-by: Anu Ramanathan <anur@...eaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Signed-off-by: Shawn Guo <shawn.guo@...aro.org>
---
 .../phy/qcom,snps-28nm-usb-hs-phy.txt         | 108 ++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/qcom,snps-28nm-usb-hs-phy.txt

diff --git a/Documentation/devicetree/bindings/phy/qcom,snps-28nm-usb-hs-phy.txt b/Documentation/devicetree/bindings/phy/qcom,snps-28nm-usb-hs-phy.txt
new file mode 100644
index 000000000000..b6f8a3eadca6
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/qcom,snps-28nm-usb-hs-phy.txt
@@ -0,0 +1,108 @@
+Qualcomm Synopsys 28nm Femto phy controller
+===========================================
+
+Synopsys 28nm femto phy controller supports LS/FS/HS usb connectivity on
+Qualcomm chipsets.
+
+Required properties:
+
+- compatible:
+    Value type: <string>
+    Definition: Should contain "qcom,qcs404-usb-hsphy".
+
+- reg:
+    Value type: <prop-encoded-array>
+    Definition: USB PHY base address and length of the register map.
+
+- #phy-cells:
+    Value type: <u32>
+    Definition: Should be 0. See phy/phy-bindings.txt for details.
+
+- clocks:
+    Value type: <prop-encoded-array>
+    Definition: See clock-bindings.txt section "consumers". List of
+		three clock specifiers for reference, phy core and
+		sleep clocks.
+
+- clock-names:
+    Value type: <string>
+    Definition: Names of the clocks in 1-1 correspondence with the "clocks"
+		property. Must contain "ref", "phy" and "sleep".
+
+- resets:
+    Value type: <prop-encoded-array>
+    Definition: See reset.txt section "consumers". PHY reset specifiers
+		for phy core and POR resets.
+
+- reset-names:
+    Value type: <string>
+    Definition: Names of the resets in 1-1 correspondence with the "resets"
+		property. Must contain "phy" and "por".
+
+- vdd-supply:
+    Value type: <phandle>
+    Definition: phandle to the regulator VDD supply node.
+
+- vdda1p8-supply:
+    Value type: <phandle>
+    Definition: phandle to the regulator 1.8V supply node.
+
+- vdda3p3-supply:
+    Value type: <phandle>
+    Definition: phandle to the regulator 3.3V supply node.
+
+- qcom,vdd-voltage-level:
+    Value type: <prop-array>
+    Definition: This is a list of three integer values <no min max> where
+		each value corresponding to voltage corner in uV.
+
+Optional properties:
+
+- qcom,init-seq:
+    Value type: <u32 array>
+    Definition: Should contain a sequence of <offset value delay> tuples to
+                program 'value' into phy register at 'offset' with 'delay'
+		in us afterwards.
+
+Optional child nodes:
+
+- The link to the USB connector should be modeled using the OF graph bindings
+  specified in bindings/graph.txt.
+
+Example:
+
+	phy@...00 {
+		compatible = "qcom,qcs404-usb-hsphy";
+		reg = <0x7a000 0x200>;
+		#phy-cells = <0>;
+		clocks = <&rpmcc RPM_SMD_LN_BB_CLK>,
+			 <&gcc GCC_USB_HS_PHY_CFG_AHB_CLK>,
+			 <&gcc GCC_USB2A_PHY_SLEEP_CLK>;
+		clock-names = "ref", "phy", "sleep";
+		resets = <&gcc GCC_USB_HS_PHY_CFG_AHB_BCR>,
+			 <&gcc GCC_USB2A_PHY_BCR>;
+		reset-names = "phy", "por";
+		vdd-supply = <&vreg_l4_1p2>;
+		vdda1p8-supply = <&vreg_l5_1p8>;
+		vdda3p3-supply = <&vreg_l12_3p3>;
+		qcom,vdd-voltage-level = <0 1144000 1200000>;
+		qcom,init-seq = <0xc0 0x01 0>,
+				<0xe8 0x0d 0>,
+				<0x74 0x12 0>,
+				<0x98 0x63 0>,
+				<0x9c 0x03 0>,
+				<0xa0 0x1d 0>,
+				<0xa4 0x03 0>,
+				<0x8c 0x23 0>,
+				<0x78 0x08 0>,
+				<0x7c 0xdc 0>,
+				<0x90 0xe0 20>,
+				<0x74 0x10 0>,
+				<0x90 0x60 0>;
+
+		port {
+			ep_usb_phy: endpoint {
+				remote-endpoint = <&ep_usb_con>;
+			};
+		};
+	};
-- 
2.18.0