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boards: frdm-mcxn947: Enable flexcomm3

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Flexcomm3 is used for the mikrobus header, enable the clock for it and
setup a pinctrl group for i2c.

Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
This commit is contained in:
Tom Burdick 2025-04-11 11:56:39 -05:00 • committed by Benjamin Cabé
commit 8b54e8afa9
2 changed files with 18 additions and 0 deletions
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6
boards/nxp/frdm_mcxn947/board.c
View file

@ -159,6 +159,12 @@ void board_early_init_hook(void)
CLOCK_AttachClk(kFRO_HF_DIV_to_FLEXCOMM2);
#endif
#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(flexcomm3))
/* Configure input clock to be able to reach the datasheet specified SPI band rate. */
CLOCK_SetClkDiv(kCLOCK_DivFlexcom3Clk, 1u);
CLOCK_AttachClk(kFRO_HF_DIV_to_FLEXCOMM3);
#endif
#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(flexcomm4))
/* Configure input clock to be able to reach the datasheet specified SPI band rate. */
CLOCK_SetClkDiv(kCLOCK_DivFlexcom4Clk, 1u);

12
boards/nxp/frdm_mcxn947/frdm_mcxn947-pinctrl.dtsi
View file

@ -31,6 +31,18 @@
};
};
pinmux_flexcomm3_lpi2c: pinmux_flexcomm3_lpi2c {
group0 {
pinmux = <FC3_P0_PIO1_0>,
<FC3_P1_PIO1_1>;
slew-rate = "fast";
drive-strength = "low";
input-enable;
bias-pull-up;
drive-open-drain;
};
};
pinmux_flexcomm7_lpi2c: pimux_flexcomm7_lpi2c {
group0 {
pinmux = <FC7_P0_PIO3_2>,