On Sat, 13 Jan 2024 18:10:51 +0100, Lukas Wunner wrote: > Commit 4f2a348aa365 ("arm64: dts: imx8mm-venice-gw73xx: add TPM device") > added a devicetree node for the Trusted Platform Module on certain > Gateworks boards. > > The commit only used the generic "tcg,tpm_tis-spi" compatible string, > but public documentation shows that the chip is an ATTPM20P from Atmel > (nowadays Microchip): > https://trac.gateworks.com/wiki/tpm > > Add the chip to the supported compatible strings of the TPM TIS SPI > schema. > > For reference, a datasheet is available at: > https://ww1.microchip.com/downloads/en/DeviceDoc/ATTPM20P-Trusted-Platform-Module-TPM-2.0-SPI-Interface-Summary-Data-Sheet-DS40002082A.pdf > > Signed-off-by: Lukas Wunner <lukas@xxxxxxxxx> > Reviewed-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx> > Cc: Tim Harvey <tharvey@xxxxxxxxxxxxx> > --- > Documentation/devicetree/bindings/tpm/tcg,tpm_tis-spi.yaml | 1 + > 1 file changed, 1 insertion(+) > Acked-by: Rob Herring <robh@xxxxxxxxxx>