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boards: imx8mp_evk: add i2c support

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Added i2c3 support on imx8mp_evk A53 board.

Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>
This commit is contained in:
Jiafei Pan 2024-12-12 15:46:20 +08:00 • committed by Benjamin Cabé
commit ab25fdf1a9
3 changed files with 38 additions and 0 deletions
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12
boards/nxp/imx8mp_evk/imx8mp_evk-pinctrl.dtsi
View file

@ -66,4 +66,16 @@
drive-strength = "x1";
};
};
pinmux_i2c3: pinmux_i2c3 {
group0 {
pinmux = <&iomuxc_i2c3_scl_i2c_scl_i2c3_scl>,
<&iomuxc_i2c3_sda_i2c_sda_i2c3_sda>;
bias-pull-up;
input-schmitt-enable;
slew-rate = "slow";
drive-strength = "x4";
input-enable;
};
};
};

8
boards/nxp/imx8mp_evk/imx8mp_evk_mimx8ml8_a53.dts
View file

@ -6,6 +6,7 @@
/dts-v1/;
#include <zephyr/dt-bindings/i2c/i2c.h>
#include <nxp/nxp_mimx8mp_a53.dtsi>
#include "imx8mp_evk-pinctrl.dtsi"
@ -69,3 +70,10 @@
pinctrl-0 = <&uart4_default>;
pinctrl-names = "default";
};
&i2c3 {
status = "okay";
pinctrl-0 = <&pinmux_i2c3>;
pinctrl-names = "default";
clock-frequency = <I2C_BITRATE_STANDARD>;
};

18
soc/nxp/imx/imx8m/a53/soc.c
View file

@ -45,6 +45,12 @@ static void soc_rdc_init(void)
periphConfig.policy = RDC_DT_VAL(enet);
RDC_SetPeriphAccessConfig(rdc_inst, &periphConfig);
#endif
#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(i2c3)) && DT_NODE_HAS_PROP(DT_NODELABEL(i2c3), rdc)
periphConfig.periph = kRDC_Periph_I2C3;
periphConfig.policy = RDC_DT_VAL(i2c3);
RDC_SetPeriphAccessConfig(rdc_inst, &periphConfig);
#endif
}
#else
@ -52,7 +58,19 @@ static void soc_rdc_init(void)
#endif
static void soc_clock_init(void)
{
#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(i2c3))
/* Set I2C source to SysPLL1 Div5 160MHZ */
CLOCK_SetRootMux(kCLOCK_RootI2c3, kCLOCK_I2cRootmuxSysPll1Div5);
/* Set root clock to 160MHZ / 10 = 16MHZ */
CLOCK_SetRootDivider(kCLOCK_RootI2c3, 1U, 10U);
CLOCK_EnableClock(kCLOCK_I2c3);
#endif
}
void soc_prep_hook(void)
{
soc_rdc_init();
soc_clock_init();
}