[PATCH 3/3] ARM: dts: cfa10049: Add PCA9555 GPIO expander to the device tree

[Maxime Ripard]

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 at free-electrons.com>
---
 arch/arm/boot/dts/imx28-cfa10049.dts |   26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/imx28-cfa10049.dts b/arch/arm/boot/dts/imx28-cfa10049.dts
index bdc80a4..714953b 100644
--- a/arch/arm/boot/dts/imx28-cfa10049.dts
+++ b/arch/arm/boot/dts/imx28-cfa10049.dts
@@ -22,8 +22,9 @@
 	apb at 80000000 {
 		apbh at 80000000 {
 			pinctrl at 80018000 {
-				pinctrl-names = "default", "default";
+				pinctrl-names = "default", "default", "default";
 				pinctrl-1 = <&hog_pins_cfa10049>;
+				pinctrl-2 = <&hog_pins_cfa10049_pullup>;
 
 				hog_pins_cfa10049: hog-10049 at 0 {
 					reg = <0>;
@@ -38,6 +39,16 @@
 					fsl,pull-up = <0>;
 				};
 
+				hog_pins_cfa10049_pullup: hog-10049-pullup at 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 at 0 {
 					reg = <0>;
 					fsl,pinmux-ids = <
@@ -113,6 +124,19 @@
 
 				i2c at 3 {
 					reg = <3>;
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					pca9555: pca9555 at 20 {
+						compatible = "nxp,pca9555";
+						interrupt-parent = <&gpio2>;
+						interrupts = <19 0x2>;
+						gpio-controller;
+						#gpio-cells = <2>;
+						interrupt-controller;
+						#interrupt-cells = <2>;
+						reg = <0x20>;
+					};
 				};
 			};
 
-- 
1.7.9.5