It looks like the baud rate divisor is miscalculated for polled qspi in mqx 3.6.2.
In the file mqx/source/io/spi/polled/spi_pol_mcf5xxx_qspi.c the function _mcf5xxx_qspi_find_baudrate()
The divisor is calculated as
div=(clock + (baudrate >> 1)) / baudrate;
I think it should be
div=clock / (baudrate << 1);
I am using the mfc52223 and the reference manual states that the calculation for the divisor is
QMR[BAUD] = clock / (2 × [desired QSPI_CLK baud rate]). We have the processor running on 80,000,000hz, and from my understanding the bus clock is 40,000,000hz. So if I want a 4M baud rate, I compute I need a divisor of 5, but the_mcf5xxx_qspi_find_baudrate() function computes a divisor of 10 when I pass in bus clock speed of 40Mhz and 4M baud rate.
What am I missing?