On Thu, Jan 14, 2021 at 12:27:42PM +0100, Christophe Leroy wrote: > Today I have in the DTS the CS GPIOs declared as ACTIVE_LOW. > If I declare them as ACTIVE_HIGH instead, then I also have to set > spi-cs-high property, otherwise of_gpio_flags_quirks() is not happy and > forces the GPIO ACTIVE LOW. > When I set spi-cs-high property, it sets the SPI_CS_HIGH bit in spi->mode. OK, so it sounds like you want SPI_CS_HIGH and that is being set correctly? > In fsl_spi_chipselect(), we have > > bool pol = spi->mode & SPI_CS_HIGH > > Then > pdata->cs_control(spi, pol); > So changing the board config is compensated by the above, and at the end it still doesn't work. This is a driver bug, the driver set_cs() operation should not be modifying the value it is told to set.
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