Radxa Zero 2 > Hardware > Hardware revisions
| Version
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Comment
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| 1.0
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Initial version
Known issues:
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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)
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GPIO pin 16 and 24 are connected on the same bus. 16 will be replaced by SARADC_CH1.
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GPIO pin 36 is an open drain pin. Works fine for input but need pull up for output.
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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
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| 1.1
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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.
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| 1.2
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Pending
Proposed changes:
- Adjust fan header location
- Add I2S on pin 31 and 36
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