linux-kernel - [PATCH RFC 5/5] ARM: dts: qcom: msm8974-hammerhead: add USB OTG support

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Message-Id: <20181001053005.18906-6-masneyb@onstation.org>
Date:   Mon,  1 Oct 2018 01:30:05 -0400
From:   Brian Masney <masneyb@...tation.org>
To:     andy.gross@...aro.org, sre@...nel.org, robh+dt@...nel.org,
        mark.rutland@....com, david.brown@...aro.org,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-soc@...r.kernel.org, jonathan@...ek.ca
Subject: [PATCH RFC 5/5] ARM: dts: qcom: msm8974-hammerhead: add USB OTG support

From: Jonathan Marek <jonathan@...ek.ca>

Add the device tree bindings for USB OTG support. Driver was tested
using on a LG Nexus 5 (hammerhead) phone.

Signed-off-by: Jonathan Marek <jonathan@...ek.ca>
Signed-off-by: Brian Masney <masneyb@...tation.org>
Tested-by: Brian Masney <masneyb@...tation.org>
---
See my cover letter for a question about how I can convert this patch
over to use a gpio-hog to get rid of the otg-en-gpios property.

 .../qcom-msm8974-lge-nexus5-hammerhead.dts    | 54 +++++++++++++++++++
 arch/arm/boot/dts/qcom-msm8974.dtsi           | 11 ++++
 2 files changed, 65 insertions(+)

diff --git a/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts b/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts
index e67d61f25a96..71e308d8628d 100644
--- a/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts
+++ b/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts
@@ -243,6 +243,16 @@
 			};
 		};
 
+		i2c1_pins: i2c1 {
+			mux {
+				pins = "gpio2", "gpio3";
+				function = "blsp_i2c1";
+
+				drive-strength = <2>;
+				bias-disable;
+			};
+		};
+
 		i2c3_pins: i2c3 {
 			mux {
 				pins = "gpio10", "gpio11";
@@ -382,6 +392,25 @@
 		};
 	};
 
+	i2c@...23000 {
+		status = "ok";
+		pinctrl-names = "default";
+		pinctrl-0 = <&i2c1_pins>;
+		clock-frequency = <100000>;
+		qcom,src-freq = <50000000>;
+
+		charger: bq24192@6b {
+			compatible = "ti,bq24192";
+			reg = <0x6b>;
+			interrupts-extended = <&spmi_bus 0 0xd5 0 IRQ_TYPE_EDGE_FALLING>;
+
+			omit-battery-class;
+
+			otg-en-gpios = <&pm8941_gpios 35 GPIO_ACTIVE_HIGH>;
+			usb_otg_vbus: usb-otg-vbus { };
+		};
+	};
+
 	i2c@...25000 {
 		status = "ok";
 		pinctrl-names = "default";
@@ -399,6 +428,31 @@
 			amstaos,proximity-diodes = <0>;
 		};
 	};
+
+	usb@...55000 {
+		status = "ok";
+
+		phys = <&usb_hs1_phy>;
+		phy-select = <&tcsr 0xb000 0>;
+
+		extcon = <&charger>, <&usb_id>;
+		vbus-supply = <&usb_otg_vbus>;
+
+		hnp-disable;
+		srp-disable;
+		adp-disable;
+
+		ulpi {
+			phy@a {
+				status = "ok";
+
+				v1p8-supply = <&pm8941_l6>;
+				v3p3-supply = <&pm8941_l24>;
+
+				qcom,init-seq = /bits/ 8 <0x1 0x64>;
+			};
+		};
+	};
 };
 
 &spmi_bus {
diff --git a/arch/arm/boot/dts/qcom-msm8974.dtsi b/arch/arm/boot/dts/qcom-msm8974.dtsi
index a808973f9dc7..0bd584695ae8 100644
--- a/arch/arm/boot/dts/qcom-msm8974.dtsi
+++ b/arch/arm/boot/dts/qcom-msm8974.dtsi
@@ -704,6 +704,17 @@
 			interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
 		};
 
+		i2c@...23000 {
+			status = "disabled";
+			compatible = "qcom,i2c-qup-v2.1.1";
+			reg = <0xf9923000 0x1000>;
+			interrupts = <0 95 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&gcc GCC_BLSP1_QUP1_I2C_APPS_CLK>, <&gcc GCC_BLSP1_AHB_CLK>;
+			clock-names = "core", "iface";
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+
 		i2c@...24000 {
 			status = "disabled";
 			compatible = "qcom,i2c-qup-v2.1.1";
-- 
2.17.1