arm: dts: imx8mm-venice-gw7901: add digital I/O direction control GPIO's

The GW7901 has GPIO's to configure the direction of its isolated
digital I/O signals. Add the GPIO pinmux, line names, and hog
configuration.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

diff --git a/arch/arm/dts/imx8mm-venice-gw7901-u-boot.dtsi b/arch/arm/dts/imx8mm-venice-gw7901-u-boot.dtsi
index e68030e..9fa2194 100644 (file)
--- a/arch/arm/dts/imx8mm-venice-gw7901-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-venice-gw7901-u-boot.dtsi
@@ -43,6 +43,20 @@
 };
 
 &gpio4 {
+       dig1ctl {
+               gpio-hog;
+               output-low;
+               gpios = <4 GPIO_ACTIVE_HIGH>;
+               line-name = "dig1_ctl";
+       };
+
+       dig2ctl {
+               gpio-hog;
+               output-low;
+               gpios = <5 GPIO_ACTIVE_HIGH>;
+               line-name = "dig2_ctl";
+       };
+
        uart3_rs232 {
                gpio-hog;
                output-high;