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authorMaxime Ripard <maxime.ripard@free-electrons.com>2012-11-20 15:33:35 +0100
committerShawn Guo <shawn.guo@linaro.org>2012-12-28 19:07:37 +0800
commit5b615fbf4a856fd82a080e1ca5a5c53a55136e07 (patch)
treea8bdd07ea9bcf1f1b7a08e5be219ac9b31684707 /arch/arm/boot
parenta49f0d1ea3ec94fc7cf33a7c36a16343b74bd565 (diff)
downloadop-kernel-dev-5b615fbf4a856fd82a080e1ca5a5c53a55136e07.zip
op-kernel-dev-5b615fbf4a856fd82a080e1ca5a5c53a55136e07.tar.gz
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>
Diffstat (limited to 'arch/arm/boot')
-rw-r--r--arch/arm/boot/dts/imx28-cfa10049.dts26
1 files changed, 25 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/imx28-cfa10049.dts b/arch/arm/boot/dts/imx28-cfa10049.dts
index bdc80a4..7890acc 100644
--- a/arch/arm/boot/dts/imx28-cfa10049.dts
+++ b/arch/arm/boot/dts/imx28-cfa10049.dts
@@ -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>;
+ };
};
};
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