issues with using SPI1 on a RapsBerry Pi 4 Module B

Hi all

Today I struggled all day by using SPI1 on the MAX31865 library. I can not use SPI0 as these pins are needed for I2C Communication. I enabled the SPI1 in the `/boot/config.txt` with `dtoverlay=spi1_3cs` and by using the test library from [rm-hull](https://github.com/rm-hull/spidev-test) I was able to send and recieve data on the SPI1. So the SPI connection works. Something seems to be wrong with the MAX31865 library.
With the default library I got the Error: `OSError: [Errno 22] Invalid argument` by altering the library to accept a phase in the [init](https://www.sigmdel.ca/michel/ha/rpi/spi_on_pi_en.html) of MAX31865 I managed to make a connection but now I am reading totally wrong values from the chip. Am I making something totally wrong? Do you need any more information from me?

Thank you very much in advance and best, Alp

Start by reproducing the reported setup using the /boot/config.txt dtoverlay=spi1_3cs configuration and the linked rm-hull/spidev-test program. Compare SPI1 behavior with the MAX31865 library's default and phase-enabled initialization, then verify that readings from the chip are correct rather than only confirming data transfer.

Written by the indexing model from the issue text.