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boards: nxp: frdm_mcxn947: add pinctrl for LPUART2

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Add pinctrl and board enablement for LPUART2, which is broken out to
P4_2 and P4_3 on the FRDM board.

Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
This commit is contained in:
Daniel DeGrasse 2024-04-04 10:28:55 -05:00 • committed by Carles Cufí
commit cbcbe7f43d
3 changed files with 24 additions and 0 deletions
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10
boards/nxp/frdm_mcxn947/frdm_mcxn947-pinctrl.dtsi
View file

@ -31,6 +31,16 @@
}; };
}; };
pinmux_flexcomm2_lpuart: pinmux_flexcomm2_lpuart {
group0 {
pinmux = <FC2_P2_PIO4_2>,
<FC2_P3_PIO4_3>;
slew-rate = "fast";
drive-strength = "low";
input-enable;
};
};
pinmux_flexcomm4_lpuart: pinmux_flexcomm4_lpuart { pinmux_flexcomm4_lpuart: pinmux_flexcomm4_lpuart {
group0 { group0 {
pinmux = <FC4_P0_PIO1_8>, pinmux = <FC4_P0_PIO1_8>,

6
boards/nxp/frdm_mcxn947/frdm_mcxn947.dtsi
View file

@ -61,6 +61,12 @@
clock-frequency = <I2C_BITRATE_STANDARD>; clock-frequency = <I2C_BITRATE_STANDARD>;
}; };
&flexcomm2_lpuart2 {
current-speed = <115200>;
pinctrl-0 = <&pinmux_flexcomm2_lpuart>;
pinctrl-names = "default";
};
&flexcomm4_lpuart4 { &flexcomm4_lpuart4 {
current-speed = <115200>; current-speed = <115200>;
pinctrl-0 = <&pinmux_flexcomm4_lpuart>; pinctrl-0 = <&pinmux_flexcomm4_lpuart>;

8
boards/nxp/frdm_mcxn947/frdm_mcxn947_mcxn947_cpu0.dts
View file

@ -85,6 +85,14 @@
status = "okay"; status = "okay";
}; };
/*
*LPFLEXCOMM supports UART and I2C on the same instance, enable this for
* LFLEXCOMM2
*/
&flexcomm2_lpuart2 {
status = "okay";
};
&flexcomm4 { &flexcomm4 {
status = "okay"; status = "okay";
}; };