arm: dts: imx8m*-venice: add gpio hog support
Add gpio hog support for board-specific gpio lines:
- put hogs in u-boot.dtsi so as to keep the regular dts files
in sync with the kernel. The hogs will not be put in the kernel
as that makes them un-usable by userspace as well as
re-initializes them to dt defaults overriding changes which may
have been done by bootloader commands.
- specify gpio names and initial config
- enable GPIO_HOG
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/dts/imx8mm-venice-gw7901-u-boot.dtsi b/arch/arm/dts/imx8mm-venice-gw7901-u-boot.dtsi
index a801ee1..11c773b 100644
--- a/arch/arm/dts/imx8mm-venice-gw7901-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-venice-gw7901-u-boot.dtsi
@@ -5,6 +5,124 @@
#include "imx8mm-venice-u-boot.dtsi"
+&gpio1 {
+ uart1_rs422 {
+ gpio-hog;
+ output-high;
+ gpios = <0 GPIO_ACTIVE_HIGH>;
+ line-name = "uart1_rs422#";
+ };
+
+ uart1rs485 {
+ gpio-hog;
+ output-high;
+ gpios = <3 GPIO_ACTIVE_HIGH>;
+ line-name = "uart1_rs485#";
+ };
+
+ uart1rs232 {
+ gpio-hog;
+ output-high;
+ gpios = <5 GPIO_ACTIVE_HIGH>;
+ line-name = "uart1_rs232#";
+ };
+
+ dig1in {
+ gpio-hog;
+ input;
+ gpios = <6 GPIO_ACTIVE_HIGH>;
+ line-name = "dig1_in";
+ };
+
+ dig1out {
+ gpio-hog;
+ output-low;
+ gpios = <7 GPIO_ACTIVE_HIGH>;
+ line-name = "dig1_out";
+ };
+};
+
+&gpio4 {
+ uart3_rs232 {
+ gpio-hog;
+ output-high;
+ gpios = <6 GPIO_ACTIVE_HIGH>;
+ line-name = "uart3_rs232#";
+ };
+
+ uart3_rs422 {
+ gpio-hog;
+ output-high;
+ gpios = <7 GPIO_ACTIVE_HIGH>;
+ line-name = "uart3_rs422#";
+ };
+
+ uart3_rs485 {
+ gpio-hog;
+ output-high;
+ gpios = <8 GPIO_ACTIVE_HIGH>;
+ line-name = "uart3_rs485#";
+ };
+
+ uart4_rs485 {
+ gpio-hog;
+ output-high;
+ gpios = <27 GPIO_ACTIVE_HIGH>;
+ line-name = "uart4_rs485#";
+ };
+
+ sim1det {
+ gpio-hog;
+ input;
+ gpios = <29 GPIO_ACTIVE_HIGH>;
+ line-name = "sim1_det";
+ };
+
+ sim2det {
+ gpio-hog;
+ input;
+ gpios = <30 GPIO_ACTIVE_HIGH>;
+ line-name = "sim2_det";
+ };
+};
+
+&gpio5 {
+ dig2out {
+ gpio-hog;
+ output-low;
+ gpios = <3 GPIO_ACTIVE_HIGH>;
+ line-name = "dig2_out";
+ };
+
+ dig2in {
+ gpio-hog;
+ input;
+ gpios = <4 GPIO_ACTIVE_HIGH>;
+ line-name = "dig2_in";
+ };
+
+ sim2sel {
+ gpio-hog;
+ output-low;
+ gpios = <5 GPIO_ACTIVE_HIGH>;
+ line-name = "sim2_sel";
+ };
+
+ uart4_rs232 {
+ gpio-hog;
+ output-high;
+ gpios = <10 GPIO_ACTIVE_HIGH>;
+ line-name = "uart4_rs232#";
+ };
+
+ uart4_rs422 {
+ gpio-hog;
+ output-high;
+ gpios = <13 GPIO_ACTIVE_HIGH>;
+ line-name = "uart4_rs422#";
+ };
+};
+
&fec1 {
phy-reset-gpios = <&gpio4 19 GPIO_ACTIVE_LOW>;
phy-reset-duration = <1>;