[Clock] Inaccurate Calibration of RC_FAST_CLK Clock
Description
In the ESP32-H2 chip, the frequency of the RC_FAST_CLK clock source is too close to the reference clock (32 MHz XTAL_CLK) frequency, making it impossible to calibrate accurately. This may affect peripherals that use RC_FAST_CLK and have stringent requirements for its accurate clock frequency.
For peripherals using RC_FAST_CLK, please refer to ESP32-H2 Technical Reference Manual > Chapter Reset and Clock [PDF].
Workarounds
Use other clock sources instead of RC_FAST_CLK.
Solution
To be fixed in the next chip revision.