From: Stefano Radaelli <stefano.radaelli21@gmail.com>
To: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Stefano Radaelli <stefano.radaelli21@gmail.com>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org
Subject: [PATCH v1 2/4] arm64: dts: freescale: imx93-var-som: Add PMIC support
Date: Wed, 29 Oct 2025 20:28:47 +0100 [thread overview]
Message-ID: <20251029192852.656806-3-stefano.radaelli21@gmail.com> (raw)
In-Reply-To: <20251029192852.656806-1-stefano.radaelli21@gmail.com>
The VAR-SOM-MX93 features Dual Freescale/NXP PCA9541 chip as a Power
Management Integrated circuit (PMIC).
The PMIC is programmable via the I2C interface and its associated
register map, and this patch adds its support.
Signed-off-by: Stefano Radaelli <stefano.radaelli21@gmail.com>
---
.../boot/dts/freescale/imx93-var-som.dtsi | 98 +++++++++++++++++++
1 file changed, 98 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx93-var-som.dtsi b/arch/arm64/boot/dts/freescale/imx93-var-som.dtsi
index 97198007b545..368530f5831f 100644
--- a/arch/arm64/boot/dts/freescale/imx93-var-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93-var-som.dtsi
@@ -70,6 +70,90 @@ led@1 {
};
};
+&lpi2c3 {
+ clock-frequency = <400000>;
+ pinctrl-names = "default", "sleep", "gpio";
+ pinctrl-0 = <&pinctrl_lpi2c3>;
+ pinctrl-1 = <&pinctrl_lpi2c3_gpio>;
+ pinctrl-2 = <&pinctrl_lpi2c3_gpio>;
+ scl-gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>;
+ sda-gpios = <&gpio2 28 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+
+ pmic@25 {
+ compatible = "nxp,pca9451a";
+ reg = <0x25>;
+
+ regulators {
+ buck1: BUCK1 {
+ regulator-name = "BUCK1";
+ regulator-min-microvolt = <650000>;
+ regulator-max-microvolt = <2237500>;
+ regulator-boot-on;
+ regulator-always-on;
+ regulator-ramp-delay = <3125>;
+ };
+
+ buck2: BUCK2 {
+ regulator-name = "BUCK2";
+ regulator-min-microvolt = <600000>;
+ regulator-max-microvolt = <2187500>;
+ regulator-boot-on;
+ regulator-always-on;
+ regulator-ramp-delay = <3125>;
+ };
+
+ buck4: BUCK4{
+ regulator-name = "BUCK4";
+ regulator-min-microvolt = <600000>;
+ regulator-max-microvolt = <3400000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ buck5: BUCK5{
+ regulator-name = "BUCK5";
+ regulator-min-microvolt = <600000>;
+ regulator-max-microvolt = <3400000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ buck6: BUCK6 {
+ regulator-name = "BUCK6";
+ regulator-min-microvolt = <600000>;
+ regulator-max-microvolt = <3400000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ ldo1: LDO1 {
+ regulator-name = "LDO1";
+ regulator-min-microvolt = <1600000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ ldo4: LDO4 {
+ regulator-name = "LDO4";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ ldo5: LDO5 {
+ regulator-name = "LDO5";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+ };
+ };
+};
+
/* BT module */
&lpuart5 {
pinctrl-names = "default";
@@ -140,6 +224,20 @@ MX93_PAD_UART2_TXD__GPIO1_IO07 0x51e
>;
};
+ pinctrl_lpi2c3: lpi2c3grp {
+ fsl,pins = <
+ MX93_PAD_GPIO_IO28__LPI2C3_SDA 0x40000b9e
+ MX93_PAD_GPIO_IO29__LPI2C3_SCL 0x40000b9e
+ >;
+ };
+
+ pinctrl_lpi2c3_gpio: lpi2c3-gpiogrp {
+ fsl,pins = <
+ MX93_PAD_GPIO_IO28__GPIO2_IO28 0x40000b9e
+ MX93_PAD_GPIO_IO29__GPIO2_IO29 0x40000b9e
+ >;
+ };
+
pinctrl_lpuart5: lpuart5grp {
fsl,pins = <
MX93_PAD_DAP_TDO_TRACESWO__LPUART5_TX 0x31e
--
2.43.0
next prev parent reply other threads:[~2025-10-29 19:29 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-29 19:28 [PATCH v1 0/4] arm64: dts: freescale: imx93-var-som: Align DTS with hardware revision Stefano Radaelli
2025-10-29 19:28 ` [PATCH v1 1/4] arm64: dts: freescale: imx93-var-som: Add WiFi and Bluetooth support Stefano Radaelli
2025-10-29 19:45 ` Frank Li
2025-10-29 19:28 ` Stefano Radaelli [this message]
2025-10-29 19:28 ` [PATCH v1 3/4] arm64: dts: freescale: imx93-var-som: Add support for WM8904 audio codec Stefano Radaelli
2025-10-29 19:28 ` [PATCH v1 4/4] arm64: dts: freescale: imx93-var-som: Add support for ADS7846 touchscreen Stefano Radaelli
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