Buttons - Cherry JAGUAR SBC-RK3588-AMR User Manual

2.3 Buttons

The control buttons provide the following functionality:
• Reset triggers a board reset.
• BOOT SW forces alternate boot sequence.
2.3.1 Boot Order
The used boot order of the Jaguar board depends on the state of the BOOT SW switch.
If no bootloader is found on any storage device, Jaguar will go into USB loader mode, showing up as a USB
device with VID:PID 2207:350b on the USB port P11 marked Download.
Once booted into Linux, presses on the BOOT SW button will trigger a KEY_VENDOR input event on the /dev/
input/by-path/platform-adc-keys-event input device:
$ evtest /dev/input/by-path/platform-adc-keys-event
Input driver version is 1.0.1
Input device ID: bus 0x19 vendor 0x1 product 0x1 version 0x100
Input device name: "adc-keys"
Supported events:
Event type 0 (EV_SYN)
Event type 1 (EV_KEY)
Event code 360 (KEY_VENDOR)
Properties:
Testing ... (interrupt to exit)
Event: time 1695722632.280609, type 1 (EV_KEY), code 360 (KEY_VENDOR), value 1
Event: time 1695722632.280609, -------------- SYN_REPORT ------------
v1.0.1
Page 6
Boot Reset
SW2 SW1
Fig. 2.4: Buttons and Download USB Type-C port
Default
1 eMMC storage
2 SD card
3 USB loader
USB 3.1
P11
BOOT SW pressed
SD card
USB loader
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