linux-kernel - [PATCH 1/5] arm64: dts: ti: j721e-sk: Add DT nodes for power regulators

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Message-ID: <20250401114053.229534-2-y-abhilashchandra@ti.com>
Date: Tue, 1 Apr 2025 17:10:49 +0530
From: Yemike Abhilash Chandra <y-abhilashchandra@...com>
To: <nm@...com>, <vigneshr@...com>
CC: <kristo@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <vaishnav.a@...com>, <jai.luthra@...ux.dev>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <imx@...ts.linux.dev>, <linux-kernel@...r.kernel.org>,
        <u-kumar1@...com>, <y-abhilashchandra@...com>
Subject: [PATCH 1/5] arm64: dts: ti: j721e-sk: Add DT nodes for power regulators

Add device tree nodes for two power regulators on the J721E SK board.
vsys_5v0: A fixed regulator representing the 5V supply output from the
LM61460 and vdd_sd_dv: A GPIO-controlled TLV71033 regulator.

J721E-SK schematics: https://www.ti.com/lit/zip/sprr438
Signed-off-by: Yemike Abhilash Chandra <y-abhilashchandra@...com>
---
 arch/arm64/boot/dts/ti/k3-j721e-sk.dts | 31 ++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j721e-sk.dts b/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
index 440ef57be294..4965957e6545 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
@@ -184,6 +184,17 @@ vsys_3v3: fixedregulator-vsys3v3 {
 		regulator-boot-on;
 	};
 
+	vsys_5v0: fixedregulator-vsys5v0 {
+		/* Output of LM61460 */
+		compatible = "regulator-fixed";
+		regulator-name = "vsys_5v0";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&vusb_main>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
+
 	vdd_mmc1: fixedregulator-sd {
 		compatible = "regulator-fixed";
 		pinctrl-names = "default";
@@ -211,6 +222,20 @@ vdd_sd_dv_alt: gpio-regulator-tps659411 {
 			 <3300000 0x1>;
 	};
 
+	vdd_sd_dv: gpio-regulator-TLV71033 {
+		compatible = "regulator-gpio";
+		pinctrl-names = "default";
+		pinctrl-0 = <&vdd_sd_dv_pins_default>;
+		regulator-name = "tlv71033";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		vin-supply = <&vsys_5v0>;
+		gpios = <&main_gpio0 118 GPIO_ACTIVE_HIGH>;
+		states = <1800000 0x0>,
+			 <3300000 0x1>;
+	};
+
 	transceiver1: can-phy1 {
 		compatible = "ti,tcan1042";
 		#phy-cells = <0>;
@@ -613,6 +638,12 @@ J721E_WKUP_IOPAD(0xd4, PIN_OUTPUT, 7) /* (G26) WKUP_GPIO0_9 */
 		>;
 	};
 
+	vdd_sd_dv_pins_default: vdd-sd-dv-default-pins {
+		pinctrl-single,pins = <
+			J721E_IOPAD(0x1dc, PIN_INPUT, 7) /* (Y1) SPI1_CLK.GPIO0_118 */
+		>;
+	};
+
 	wkup_uart0_pins_default: wkup-uart0-default-pins {
 		pinctrl-single,pins = <
 			J721E_WKUP_IOPAD(0xa0, PIN_INPUT, 0) /* (J29) WKUP_UART0_RXD */
-- 
2.34.1