reServer AGX Orin: add LED and can interface configure

overlays/agx-orin/agx-orin-seeed-reserver.dts

@@ -144,7 +144,6 @@
  };
  };
 
- //remove id-gpio = <&tegra_main_gpio TEGRA234_MAIN_GPIO(Q, 1) GPIO_ACTIVE_HIGH>; lock
  fragment@6{
  target = <&p3737_avdd_cam_2v8>;
  __overlay__ {
@@ -241,13 +240,15 @@
  };
  };
 
+ //remove <&tegra_aon_gpio TEGRA234_AON_GPIO(CC, 3) GPIO_ACTIVE_HIGH>
  fragment@10{
  target = <&dsi_vdd_1v8_bl_en>;
  __overlay__ {
  status = "disabled";
  };
  };
 
+ //HDMI hotplug
  fragment@11{
  target-path = "/display@13800000";
  __overlay__ {
@@ -256,6 +257,64 @@
  };
  };
 
+ //sudo modprobe can_raw can
+ //ip link set can0 up type can bitrate 500000 dbitrate 1000000 berr-reporting on fd on
+ //ip link set can1 up type can bitrate 500000 dbitrate 1000000 berr-reporting on fd on
+ //send: cansend can0 123##1abcdabcd
+ //candump -x any 
+
+ //CAN0
+ fragment@12{
+ target-path = "/mttcan@c310000";
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ //CAN1
+ fragment@13{
+ target-path = "/mttcan@c320000";
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ //LED
+ fragment@14{
+ target-path = "/";
+ __overlay__ {
+ leds {
+ status = "okay";
+ compatible = "gpio-leds";
+
+ led {
+ label = "on-board:usr0";
+ gpios = <&tegra_main_gpio TEGRA234_MAIN_GPIO(Q, 6) GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "cpu0";
+ default-state = "off";
+ };
+ };
+ };
+ };
+ //rs485 and uart
+ // seeed@seeed-desktop:~$ sudo cat /sys/kernel/debug/pinctrl/2430000.pinmux/pinconf-groups | grep px5 -A 14
+ // 121 (uart2_rx_px5): 
+ // pull=0
+ // tristate=1
+ // enable-input=1
+ // open-drain=0
+ // io-reset=0
+ // rcv-sel=0
+ // io-hv=0
+ // loopback=0
+ // schmitt=0
+ // pull-down-strength=0
+ // pull-up-strength=0
+ // drive-type=0
+ // func=uartb
+ // pad-power=0
+
+
 };