Hi Lukas, On Wed, Dec 20, 2023 at 09:27:14AM +0100, Lukas Wunner wrote: > On Mon, Aug 24, 2020 at 02:19:48PM -0700, rentao.bupt@xxxxxxxxx wrote: > > Add initial version of device tree for Facebook Wedge400 (AST2500) BMC. > [...] > > --- /dev/null > > +++ b/arch/arm/boot/dts/aspeed-bmc-facebook-wedge400.dts > [...] > > + tpmdev@0 { > > + compatible = "tcg,tpm_tis-spi"; > > What's the chip used on this board? Going forward, the DT schema for TPMs > requires the exact chip name in addition to the generic "tcg,tpm_tis-spi". Most likely it is "infineon,slb9670", but let me double confirm and will prepare a patch for fix later. Cheers, - Tao