SPI Frequency change limits not reflected on Espressif port

[gamblor21]

CircuitPython version

Adafruit CircuitPython 8.0.0-beta.6

Code/REPL

import displayio
import board
import busio

displayio.release_displays()

FREQ = 80_000_000
spi = board.SPI()
spi.try_lock()
spi.configure(baudrate=FREQ)
spi.unlock()

Behavior

The frequency returned will always be what the baudrate parameter was, even if the bus could not be set to that frequency.

Description

spi.frequency always returns the value it was set to, even if that value was not achieved.

From set_spi_config in /ports/espressif/common-hal/busio/SPI.c

...
    esp_err_t result = spi_bus_add_device(self->host_id, &device_config, &spi_handle[self->host_id]);
    if (result != ESP_OK) {
        mp_raise_RuntimeError(translate("SPI configuration failed"));
    }
    self->baudrate = baudrate;
...

Instead of setting the baudrate calling spi_device_get_actual_freq function could be used to calculate the actual frequency the bus was set to.

Additional information

No response