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ARM: dts: cfa10049: Add PCA9555 GPIO expander to the device tree 

Add the GPIO expander found on the i2c1 bus, behind the muxer to the
device tree.

This gpio expander will be used to get tachymeters values and data ready
interruptions from the nuvoton NAU7802 ADCs.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This commit is contained in:
Maxime Ripard 2012-11-20 15:33:35 +01:00 committed by Shawn Guo
parent a49f0d1ea3
commit 5b615fbf4a
1 changed files with 25 additions and 1 deletions
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26
arch/arm/boot/dts/imx28-cfa10049.dts
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@ -23,7 +23,8 @@
apbh@80000000 {
pinctrl@80018000 {
pinctrl-names = "default", "default";
pinctrl-1 = <&hog_pins_cfa10049>;
pinctrl-1 = <&hog_pins_cfa10049
&hog_pins_cfa10049_pullup>;
hog_pins_cfa10049: hog-10049@0 {
reg = <0>;
@ -38,6 +39,16 @@
fsl,pull-up = <0>;
};
hog_pins_cfa10049_pullup: hog-10049-pullup@0 {
reg = <0>;
fsl,pinmux-ids = <
0x2133 /* MX28_PAD_SSP2_D3__GPIO_2_19 */
>;
fsl,drive-strength = <0>;
fsl,voltage = <1>;
fsl,pull-up = <1>;
};
spi3_pins_cfa10049: spi3-cfa10049@0 {
reg = <0>;
fsl,pinmux-ids = <
@ -113,6 +124,19 @@
i2c@3 {
reg = <3>;
#address-cells = <1>;
#size-cells = <0>;
pca9555: pca9555@20 {
compatible = "nxp,pca9555";
interrupt-parent = <&gpio2>;
interrupts = <19 0x2>;
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
reg = <0x20>;
};
};
};