|
|
| Line 36: |
Line 36: |
| | | Pending | | | Pending |
| | Proposed changes: | | Proposed changes: |
| − | * Point fan header to the side of the board. | + | * Adjust fan header location |
| − | * Move edge components deeper inside the board
| + | * Add I2S on pin 31 and 36 |
| − | * Add I2S | + | |
| | |} | | |} |
Revision as of 06:47, 1 June 2022
Radxa Zero 2 > Hardware > Hardware revisions
| Version
|
Comment
|
| 1.0
|
Initial version
Known issues:
-
Lack of clearance around microSD card slot resulting the card will be blocked for insertion. (Workaround: lift the card corner slightly during insertion, so the card can "sit" on that blocking component when fully inserted)
- TYPE-C headers are slightly misaligned.
- PCB mounting hole location is different from Zero, as such a proposed universal case cannot share holes on the USB connector side.
- USB 3 port may not be recognized by the board. (Manually fixed on sample boards)
-
GPIO pin 16 and 24 are connected on the same bus. 16 will be replaced by SARADC_CH1.
-
GPIO pin 36 is an open drain pin. Works fine for input but need pull up for output.
-
Fan's PWM generator is occupied by VDDCPU_B. Preferably an unused PWM pin should go there. Otherwise gpio-fan will be used in device tree.
- Green LED might be too bright
|
| 1.1
|
Major changes:
- Fix microSD card clearance.
- Pin 16 is now connected to GPIOZ_8.
- Pin 22 is now connected to GPIOZ_9.
- Pin 36 is now pulled up.
- Fan is now connected to GPIOAO_11 (PWMAO_A).
- Relocated fan header, and switched to a smaller CSI connector.
- Update CSI, DSI pin definition.
- Switch wireless module from AP6256 to AW-CM256SM, which requires different firmware. Distro developers are recommended to include firmwares for both modules.
|
| 1.2
|
Pending
Proposed changes:
- Adjust fan header location
- Add I2S on pin 31 and 36
|
