On Wed, Dec 05, 2018 at 03:22:40PM +0000, Kai Che wrote: > Hi all, > > I'm trying to communicate with a TPM 2.0 (infineon,slb9670) over SPI on a Raspberry Pi 3 in barebox. > > CONFIG_SPI=y > CONFIG_DRIVER_SPI_GPIO=y > CONFIG_CMD_SPI=y > > are set in the barebox configuration and > > dtparam=spi=on > > is set in the /boot/config.txt on the raspberry pi. > > But when checking /dev/ on barebox, there is nothing related to spi except cs0. > > I would have expected something similiar to /dev/spidev0.0 showing up. I you want to communicate with a SPI device directly without the driver, there's the 'spi' command. It directly uses internal functions without the need of any file in /dev/. We don't have any bcm283x SPI driver in barebox. You probably already noticed that and enable the spi-gpio driver for this reason. However, you'll need the appropriate device nodes (Compatible to "spi-gpio") and the pinctrl setup to make this work. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
