linux-kernel - [PATCH v16 2/2] arm64: dts: qcom: sa8295p: Enable tertiary controller and its 4 USB ports

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Message-ID: <20240429162048.2133512-3-quic_kriskura@quicinc.com>
Date: Mon, 29 Apr 2024 21:50:48 +0530
From: Krishna Kurapati <quic_kriskura@...cinc.com>
To: Krzysztof Kozlowski <krzk+dt@...nel.org>, Rob Herring <robh@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio
	<konrad.dybcio@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>, Johan Hovold
	<johan@...nel.org>
CC: <linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <quic_ppratap@...cinc.com>,
        <quic_jackp@...cinc.com>, Krishna Kurapati <quic_kriskura@...cinc.com>
Subject: [PATCH v16 2/2] arm64: dts: qcom: sa8295p: Enable tertiary controller and its 4 USB ports

Multiport USB controller (host-only) of SA8295 ADP has 4 Type-A ports
exposed for connecting peripherals. The VBUS to these peripherals is
provided by TPS2559QWDRCTQ1 regulators connected to these ports. Each
regulator has an enable pin controlled by PMM8540. Since these regulators
are GPIO controlled regulators, model them as fixed regulators and keep
them Always-On at boot since we are wakeup capable and we don't need to
turn them off on suspend. Also since we don't enter device mode, these
regulators can be kept on.

Signed-off-by: Krishna Kurapati <quic_kriskura@...cinc.com>
---
 arch/arm64/boot/dts/qcom/sa8295p-adp.dts | 83 ++++++++++++++++++++++++
 1 file changed, 83 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sa8295p-adp.dts b/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
index 78e933c42c31..2fd1dafe63ce 100644
--- a/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
+++ b/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
@@ -9,6 +9,7 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
 #include <dt-bindings/spmi/spmi.h>
+#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
 
 #include "sa8540p.dtsi"
 #include "sa8540p-pmics.dtsi"
@@ -109,6 +110,46 @@ edp3_connector_in: endpoint {
 		};
 	};
 
+	regulator-usb2-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "USB2_VBUS";
+		gpio = <&pmm8540c_gpios 9 GPIO_ACTIVE_HIGH>;
+		pinctrl-0 = <&usb2_en>;
+		pinctrl-names = "default";
+		enable-active-high;
+		regulator-always-on;
+	};
+
+	regulator-usb3-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "USB3_VBUS";
+		gpio = <&pmm8540e_gpios 5 GPIO_ACTIVE_HIGH>;
+		pinctrl-0 = <&usb3_en>;
+		pinctrl-names = "default";
+		enable-active-high;
+		regulator-always-on;
+	};
+
+	regulator-usb4-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "USB4_VBUS";
+		gpio = <&pmm8540g_gpios 5 GPIO_ACTIVE_HIGH>;
+		pinctrl-0 = <&usb4_en>;
+		pinctrl-names = "default";
+		enable-active-high;
+		regulator-always-on;
+	};
+
+	regulator-usb5-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "USB5_VBUS";
+		gpio = <&pmm8540g_gpios 9 GPIO_ACTIVE_HIGH>;
+		pinctrl-0 = <&usb5_en>;
+		pinctrl-names = "default";
+		enable-active-high;
+		regulator-always-on;
+	};
+
 	reserved-memory {
 		gpu_mem: gpu-mem@...00000 {
 			reg = <0 0x8bf00000 0 0x2000>;
@@ -637,6 +678,10 @@ &usb_1_qmpphy {
 	status = "okay";
 };
 
+&usb_2 {
+	status = "okay";
+};
+
 &usb_2_hsphy0 {
 	vdda-pll-supply = <&vreg_l5a>;
 	vdda18-supply = <&vreg_l7g>;
@@ -697,6 +742,44 @@ max20411_en: max20411-en-state {
 	};
 };
 
+&pmm8540c_gpios {
+	usb2_en: usb2-en-state {
+		pins = "gpio9";
+		function = "normal";
+		qcom,drive-strength = <PMIC_GPIO_STRENGTH_HIGH>;
+		output-enable;
+		power-source = <0>;
+	};
+};
+
+&pmm8540e_gpios {
+	usb3_en: usb3-en-state {
+		pins = "gpio5";
+		function = "normal";
+		qcom,drive-strength = <PMIC_GPIO_STRENGTH_HIGH>;
+		output-enable;
+		power-source = <0>;
+	};
+};
+
+&pmm8540g_gpios {
+	usb4_en: usb4-en-state {
+		pins = "gpio5";
+		function = "normal";
+		qcom,drive-strength = <PMIC_GPIO_STRENGTH_HIGH>;
+		output-enable;
+		power-source = <0>;
+	};
+
+	usb5_en: usb5-en-state {
+		pins = "gpio9";
+		function = "normal";
+		qcom,drive-strength = <PMIC_GPIO_STRENGTH_HIGH>;
+		output-enable;
+		power-source = <0>;
+	};
+};
+
 &tlmm {
 	pcie2a_default: pcie2a-default-state {
 		clkreq-n-pins {
-- 
2.34.1