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colibri-imx8x: add on-module gpio expander fxl6408

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The FXL6408 GPIO expander manages critical devices,
including on-module USB hub. Configure the expander to
switch the USB hub into bypass mode, allowing to use
on-carrier-board USB hub.

Signed-off-by: Oleksandr Suvorov <cryosay@gmail.com>
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io>
This commit is contained in:
Oleksandr Suvorov 2021-11-21 18:05:17 +02:00 committed by Stefano Babic
parent 99dd2549a1
commit 4821074bec
2 changed files with 28 additions and 0 deletions
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27
arch/arm/dts/fsl-imx8qxp-colibri.dts
View File

@ -129,6 +129,14 @@
>; >;
}; };
/* On Module I2C */
pinctrl_i2c0: i2c0grp {
fsl,pins = <
SC_P_MIPI_CSI0_GPIO0_00_ADMA_I2C0_SCL 0x06000021
SC_P_MIPI_CSI0_GPIO0_01_ADMA_I2C0_SDA 0x06000021
>;
};
/* Off Module I2C */ /* Off Module I2C */
pinctrl_i2c1: i2c1grp { pinctrl_i2c1: i2c1grp {
fsl,pins = < fsl,pins = <
@ -298,6 +306,25 @@
}; };
}; };
&i2c0 {
#address-cells = <1>;
#size-cells = <0>;
clock-frequency = <100000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c0>;
status = "okay";
/* GPIO expander */
gpio_expander_43: gpio-expander@43 {
compatible = "fcs,fxl6408";
gpio-controller;
#gpio-cells = <2>;
reg = <0x43>;
initial_io_dir = <0xff>;
initial_output = <0x05>;
};
};
&i2c1 { &i2c1 {
#address-cells = <1>; #address-cells = <1>;
#size-cells = <0>; #size-cells = <0>;

1
configs/colibri-imx8x_defconfig
View File

@ -41,6 +41,7 @@ CONFIG_TFTP_BLOCKSIZE=4096
CONFIG_TFTP_TSIZE=y CONFIG_TFTP_TSIZE=y
CONFIG_CLK_IMX8=y CONFIG_CLK_IMX8=y
CONFIG_CPU=y CONFIG_CPU=y
CONFIG_FXL6408_GPIO=y
CONFIG_MXC_GPIO=y CONFIG_MXC_GPIO=y
CONFIG_DM_I2C=y CONFIG_DM_I2C=y
CONFIG_SYS_I2C_IMX_LPI2C=y CONFIG_SYS_I2C_IMX_LPI2C=y