dspi in LS1046A

rashmikj · ‎04-24-2021

We have a infineon TPM2 connected to dspi of LS1046A processor in our custom card. We are using PCS1 as chip select . We have modified the dts file accordingly in uboot & also enabled TPM in defconfig.

When we try to read through tpm command in uboot, it says " could not find tpm " error.

We

Also when we monitor PCS1, it goes low as soon as we power on our card. Do we need to configure anything else.

Kindly help.

Pavel · ‎04-28-2021

Usually the LS1046a u-boot does not support DSPI. Trusted Platform Module (TPM) is not command for u-boot.

rashmikj · ‎05-05-2021

how to check in Linux??

Pavel · ‎05-06-2021

DSPI under u-boot:

The LS1046 DSPI is not used on the LS1046ARDB board.

See the following page about using DSPI driver under u-boot on the LS1043a board:

https://lists.denx.de/pipermail/u-boot/2015-November/233196.html

Use similar code on your LS1046a board under u-boot.

DSPI under Linux:

Enable DSPI in kernel menu. See attached file.

See information about SPIDEV using on the following page:

https://linux-sunxi.org/SPIdev