[PATCH 7/9] arm64: dts: imx8ulp-evk: Enable LPUART7

From: Peng Fan (OSS)

Date: Wed Jul 15 2026 - 08:38:10 EST


From: Sherry Sun <sherry.sun@xxxxxxx>

The i.MX 8ULP EVK proto1B revision routes LPUART7 TX/RX to the FT4232
PortD connector (J25/J26 pins 2-3). Enable the port by default so the
additional serial console is available out of the box.

Signed-off-by: Sherry Sun <sherry.sun@xxxxxxx>
Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
---
arch/arm64/boot/dts/freescale/imx8ulp-evk.dts | 15 +++++++++++++++
1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts b/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
index 66e99cd24040f..938ead54ff50c 100644
--- a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
@@ -179,6 +179,14 @@ bluetooth {
};
};

+&lpuart7 {
+ /* FT4232 PortD: need to connect J25/J26 2-3 */
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&pinctrl_lpuart7>;
+ pinctrl-1 = <&pinctrl_lpuart7>;
+ status = "okay";
+};
+
&lpi2c7 {
#address-cells = <1>;
#size-cells = <0>;
@@ -370,6 +378,13 @@ MX8ULP_PAD_PTE8__LPUART6_CTS_B 0x3
>;
};

+ pinctrl_lpuart7: lpuart7grp {
+ fsl,pins = <
+ MX8ULP_PAD_PTF22__LPUART7_TX 0x3
+ MX8ULP_PAD_PTF23__LPUART7_RX 0x3
+ >;
+ };
+
pinctrl_lpi2c7: lpi2c7grp {
fsl,pins = <
MX8ULP_PAD_PTE12__LPI2C7_SCL 0x20

--
2.34.1