[PATCH] arm: dts: imx6qdl: add gpio expander pca9535

[Gilles DOFFE]

The pca9535 gpio expander is present on the Rex baseboard, but missing
from the dtsi.

Add the new gpio controller and the associated interrupt line
MX6QDL_PAD_NANDF_CS3__GPIO6_IO16.

Signed-off-by: Gilles DOFFE <gilles.do...@savoirfairelinux.com>
---
 arch/arm/boot/dts/imx6qdl-rex.dtsi | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm/boot/dts/imx6qdl-rex.dtsi 
b/arch/arm/boot/dts/imx6qdl-rex.dtsi
index 97f1659144ea..d5324c6761c1 100644
--- a/arch/arm/boot/dts/imx6qdl-rex.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-rex.dtsi
@@ -136,6 +136,19 @@
                compatible = "atmel,24c02";
                reg = <0x57>;
        };
+
+       gpio8: pca9535@27 {
+               compatible = "nxp,pca9535";
+               reg = <0x27>;
+               gpio-controller;
+               #gpio-cells = <2>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&pinctrl_pca9535>;
+               interrupt-parent = <&gpio6>;
+               interrupts = <16 IRQ_TYPE_LEVEL_LOW>;
+               interrupt-controller;
+               #interrupt-cells = <2>;
+       };
 };
 
 &i2c3 {
@@ -237,6 +250,12 @@
                        >;
                };
 
+               pinctrl_pca9535: pca9535 {
+                       fsl,pins = <
+                               MX6QDL_PAD_NANDF_CS3__GPIO6_IO16        
0x00017059
+                  >;
+               };
+
                pinctrl_uart1: uart1grp {
                        fsl,pins = <
                                MX6QDL_PAD_CSI0_DAT10__UART1_TX_DATA    0x1b0b1
-- 
2.19.1