redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

arm64: dts: imx8qxp-mek: Add i2c1 with pca9646 

Add an initial description of the i2c1 bus with a pca9646 i2c switch and
various gpio expanders and sensors behind that. Only add the sensors
which already have upstream drivers.

According to the datasheet the pca9646 is software compatible with
pca9546 so no driver changes should be required.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
hifive-unleashed-5.2
Leonard Crestez 2019-04-21 15:27:46 +08:00 committed by Shawn Guo
parent 6b2bcbd8f9
commit 7b2ac489c3
1 changed files with 95 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

95
arch/arm64/boot/dts/freescale/imx8qxp-mek.dts
View File

@ -60,6 +60,82 @@
};
};
&adma_i2c1 {
#address-cells = <1>;
#size-cells = <0>;
clock-frequency = <100000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_lpi2c1 &pinctrl_ioexp_rst>;
status = "okay";
i2c-switch@71 {
compatible = "nxp,pca9646", "nxp,pca9546";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x71>;
reset-gpios = <&lsio_gpio1 1 GPIO_ACTIVE_LOW>;
i2c@0 {
#address-cells = <1>;
#size-cells = <0>;
reg = <0>;
max7322: gpio@68 {
compatible = "maxim,max7322";
reg = <0x68>;
gpio-controller;
#gpio-cells = <2>;
};
};
i2c@1 {
#address-cells = <1>;
#size-cells = <0>;
reg = <1>;
};
i2c@2 {
#address-cells = <1>;
#size-cells = <0>;
reg = <2>;
pressure-sensor@60 {
compatible = "fsl,mpl3115";
reg = <0x60>;
};
};
i2c@3 {
#address-cells = <1>;
#size-cells = <0>;
reg = <3>;
pca9557_a: gpio@1a {
compatible = "nxp,pca9557";
reg = <0x1a>;
gpio-controller;
#gpio-cells = <2>;
};
pca9557_b: gpio@1d {
compatible = "nxp,pca9557";
reg = <0x1d>;
gpio-controller;
#gpio-cells = <2>;
};
light-sensor@44 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_isl29023>;
compatible = "isil,isl29023";
reg = <0x44>;
interrupt-parent = <&lsio_gpio1>;
interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
};
};
};
};
&usdhc1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc1>;
@ -100,6 +176,25 @@
>;
};
pinctrl_ioexp_rst: ioexp_rst_grp {
fsl,pins = <
IMX8QXP_SPI2_SDO_LSIO_GPIO1_IO01 0x06000021
>;
};
pinctrl_isl29023: isl29023grp {
fsl,pins = <
IMX8QXP_SPI2_SDI_LSIO_GPIO1_IO02 0x00000021
>;
};
pinctrl_lpi2c1: lpi2c1grp {
fsl,pins = <
IMX8QXP_USB_SS3_TC1_ADMA_I2C1_SCL 0x06000021
IMX8QXP_USB_SS3_TC3_ADMA_I2C1_SDA 0x06000021
>;
};
pinctrl_lpuart0: lpuart0grp {
fsl,pins = <
IMX8QXP_UART0_RX_ADMA_UART0_RX 0x06000020