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boards: imx8mm_evk_a53: add i2c gpio expander support

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Added gpio expander pca6416 support on the board, it use i2c bus to
expand IO ports.

Added GPIO test case overlay for the board.

Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>
This commit is contained in:
Jiafei Pan 2024-12-19 19:02:45 +08:00 committed by Benjamin Cabé
parent 594b646bfd
commit 2c2430cb49
3 changed files with 52 additions and 0 deletions
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12
boards/nxp/imx8mm_evk/imx8mm_evk-pinctrl.dtsi
View File

@ -63,4 +63,16 @@
drive-strength = "x6";
};
};
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;
};
};
};

22
boards/nxp/imx8mm_evk/imx8mm_evk_mimx8mm6_a53.dts
View File

@ -6,6 +6,8 @@
/dts-v1/;
#include <zephyr/dt-bindings/gpio/gpio.h>
#include <zephyr/dt-bindings/i2c/i2c.h>
#include <nxp/nxp_mimx8mm_a53.dtsi>
#include "imx8mm_evk-pinctrl.dtsi"
@ -67,3 +69,23 @@
pinctrl-names = "default";
status = "okay";
};
&gpio1 {
status = "okay";
};
&i2c3 {
status = "okay";
pinctrl-0 = <&pinmux_i2c3>;
pinctrl-names = "default";
clock-frequency = <I2C_BITRATE_STANDARD>;
gpio_exp1: pca6416@20 {
compatible = "nxp,pca6416";
reg = <0x20>;
gpio-controller;
#gpio-cells = <2>;
interrupt-gpios = <&gpio1 12 (GPIO_ACTIVE_LOW|GPIO_PULL_UP)>;
status = "okay";
};
};

18
tests/drivers/gpio/gpio_basic_api/boards/imx8mm_evk_mimx8mm6_a53.overlay Normal file
View File

@ -0,0 +1,18 @@
/*
* Copyright 2024 NXP
*
* SPDX-License-Identifier: Apache-2.0
*/
/{
resources {
compatible = "test-gpio-basic-api";
/*
* Use connector J1003 Pin-12 GPIO.1 which connect to pca6416 P1_2 as input
* GPIO, and connector J1003 Pin-16 GPIO.4 which connect to pca6416 P1_5 as
* output GPIO, connect these two pins with a Dupont Line.
*/
out-gpios = <&gpio_exp1 10 0>;
in-gpios = <&gpio_exp1 13 0>;
};
};