linux-kernel - [PATCH 2/5] arm64: dts: ti: am68-sk: Fix power regulator hierarchy

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Message-ID: <20250401114053.229534-3-y-abhilashchandra@ti.com>
Date: Tue, 1 Apr 2025 17:10:50 +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 2/5] arm64: dts: ti: am68-sk: Fix power regulator hierarchy

Add a fixed regulator node for the LM61460 5V supply on the AM68 SK and
fix the vin-supply for the TLV71033 regulator on AM68-SK by updating it
from vsys_3v3 to vsys_5v0 to match the schematics.

AM68-SK schematics: https://www.ti.com/lit/zip/sprr463
Fixes: a266c180b398 ("arm64: dts: ti: k3-am68-sk: Add support for AM68 SK base board")
Signed-off-by: Yemike Abhilash Chandra <y-abhilashchandra@...com>
---
 arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts b/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
index 11522b36e0ce..5fa70a874d7b 100644
--- a/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
@@ -44,6 +44,17 @@ vusb_main: regulator-vusb-main5v0 {
 		regulator-boot-on;
 	};
 
+	vsys_5v0: regulator-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;
+	};
+
 	vsys_3v3: regulator-vsys3v3 {
 		/* Output of LM5141 */
 		compatible = "regulator-fixed";
@@ -76,7 +87,7 @@ vdd_sd_dv: regulator-tlv71033 {
 		regulator-min-microvolt = <1800000>;
 		regulator-max-microvolt = <3300000>;
 		regulator-boot-on;
-		vin-supply = <&vsys_3v3>;
+		vin-supply = <&vsys_5v0>;
 		gpios = <&main_gpio0 49 GPIO_ACTIVE_HIGH>;
 		states = <1800000 0x0>,
 			 <3300000 0x1>;
-- 
2.34.1