Differences

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--- en:c2_gpio_key_wakeup [2017/07/24 18:02]
joy.cho [3. SW Set-up (1) - Ubuntu]
+++ en:c2_gpio_key_wakeup [2017/07/24 18:07] (current)
joy.cho [2. Available Keys]
@@ Line 1: / Line 1: @@
 ====== Power Off and Wake Up using GPIO Key Button ======
 This section describes how to set up GPIO key button for power off and wake up purpose.\\
-  - [[odroid-c2:application_note:gpio:gpio_key_wakeup#hardware_set-up|Hardware Set-up]]
+  - [[en:c2_gpio_key_wakeup&#hardware_set-up|Hardware Set-up]]
-  - [[odroid-c2:application_note:gpio:gpio_key_wakeup#available_keys|Available Keys]]
+  - [[en:c2_gpio_key_wakeup&#available_keys|Available Keys]]
-  - [[odroid-c2:application_note:gpio:gpio_key_wakeup#sw_set-up_1_-_ubuntu|SW Set-up (1) Ubuntu]]
+  - [[en:c2_gpio_key_wakeup&#sw_set-up_1_-_ubuntu|SW Set-up (1) Ubuntu]]
-  - [[odroid-c2:application_note:gpio:gpio_key_wakeup#sw_set-up_2_-_android|SW Set-up (2) Android]]
+  - [[en:c2_gpio_key_wakeup&#sw_set-up_2_-_android|SW Set-up (2) Android]]
-  - [[odroid-c2:application_note:gpio:gpio_key_wakeup#troubleshooting|Troubleshooting]]
+  - [[en:c2_gpio_key_wakeup&#troubleshooting|Troubleshooting]]
 The brief set-up flow is as following.\\
@@ Line 67: / Line 67: @@
 You can find the detailed information about 40-pin and 7-pin connectors in the following link.\\
-[[odroid-c2:hardware:expansion_connectors|Expansion Connectors]]\\
+[[en:c2_hardware&#expansion_connectors|Expansion Connectors]]\\
 ==== 3. SW Set-up (1) - Ubuntu ====
@@ Line 101: / Line 101: @@
 To wake-up after power off, long-pressing over 2 seconds is needed.
-==== 4. SW Set-up (2) - Android ====
+==== 4. SW Set-up (2) - Android  ====
+<WRAP center round important>
+  * Android : You have to modify the dts file in Android Marshmallow (v2.4) and higher version to using this functionality.
+</WRAP>
+=== (1) Modifying and Flashing Kernel dts ===
+In case of Android, you have to modify the dts file to activate gpio key functionality.\\
+[[https://github.com/hardkernel/linux/blob/odroidc2-3.14.y-android/arch/arm64/boot/dts/meson64_odroidc2.dts|C2 Android DTS]]\\
+<kernel_path>/arch/arm64/boot/dts/meson64_odroidc2.dts
+<code>
+...
+gpio_keypad{
+    .
+    status = "okay";
+    .
+};
+...
+</code>
+After compiling the dts file, you can flash the dtb file to the board.
+In kernel:
+<code bash target>
+$ make odroidc2_defconfig
+$ make dtbs
+$ fastboot flash dtb arch/arm64/boot/dts/meson64_odroidc2.dtb
+$ fastboot reboot
+</code>
+You have to flash dtbs file when board it is in u-boot fastboot mode.
+In board:
+<code bash target>
+$ reboot fastboot
+</code>
+=== (2) Setting boot.ini ===
+In Android boot.ini, you can find a "gpiopower" example.
+Uncomment "gpiopower" part and modify the number with the number you want to use.
+<code ini target>
+## gpio power key : J2 (2x20) Pin#29 , GPIOX.BIT0
+setenv gpiopower "228"
+</code>
+=== (3) Setting Power Button Action for Power Off ===
+In Android, you don't need to set any menu for power button actions but it's already defined as following.\\
+One short power key event is used for sleep, and with long key event, you can handle options of power off/reboot.\\
+With Android Marshmallow v2.4 or higher version, it's available to enter power off using **long-pressing (5 sec)**.
+=== (4) Wake up Action ===
+And to wake-up after power off, long-pressing over 2 seconds is needed.
+==== 5. Troubleshooting  ====
+https://forum.odroid.com/viewtopic.php?f=137&t=27602#p195995 \\
+https://forum.odroid.com/viewtopic.php?f=136&t=27636