ARM: dts: am57xx-idk: Add Industrial input support

The SN65HVS882 is available on both the AM572x and AM571x IDKs and is
attached to SPI1. Input is attached to the I/O header. The load trigger
is attached to GPIO3_19 on the AM572x IDK.

Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/boot/dts/am572x-idk.dts b/arch/arm/boot/dts/am572x-idk.dts
index 87bbc66..27d9149 100644 (file)
--- a/arch/arm/boot/dts/am572x-idk.dts
+++ b/arch/arm/boot/dts/am572x-idk.dts
@@ -83,3 +83,7 @@
        bus-width = <4>;
        cd-gpios = <&gpio6 27 0>; /* gpio 219 */
 };
+
+&sn65hvs882 {
+       load-gpios = <&gpio3 19 GPIO_ACTIVE_LOW>;
+};

diff --git a/arch/arm/boot/dts/am57xx-idk-common.dtsi b/arch/arm/boot/dts/am57xx-idk-common.dtsi
index 03cec62..438076e 100644 (file)
--- a/arch/arm/boot/dts/am57xx-idk-common.dtsi
+++ b/arch/arm/boot/dts/am57xx-idk-common.dtsi
@@ -253,6 +253,21 @@
        };
 };
 
+&mcspi3 {
+       status = "okay";
+       ti,pindir-d0-out-d1-in;
+
+       sn65hvs882: sn65hvs882@0 {
+               compatible = "pisosr-gpio";
+               gpio-controller;
+               #gpio-cells = <2>;
+
+               reg = <0>;
+               spi-max-frequency = <1000000>;
+               spi-cpol;
+       };
+};
+
 &uart3 {
        status = "okay";
        interrupts-extended = <&crossbar_mpu GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH