Overclock to 153.6 MHz (instead of 147.6 MHz) for I²S 48 kHz sample rate

[magy00]

Increasing clk_sys by another 6 MHz would allow for exact 96 kHz and 192 kHz sampling rates (apart from the ±30 ppm of Pico's 12 MHz crystal itself).

[magy00]

Should I2S::setSysClk() return true if clk_sys was (successfully) changed, or should it return false only if any change attempt was unsuccessful (or should it panic() instead)?

[earlephilhower]

Should I2S::setSysClk() return true if clk_sys was (successfully) changed, or should it return false only if any change attempt was unsuccessful (or should it panic() instead)?

In theory if there's a return code I'd not panic and return true if the machine state on output of the function is what I requested (even if it was already good). So your returning of the set_sys_clk is fine.

[earlephilhower]

Thanks!

[frohro]

This is a really nice improvement! Thanks!