162306a36Sopenharmony_ci* H1 Secure Microcontroller with Cr50 Firmware on SPI Bus.
262306a36Sopenharmony_ci
362306a36Sopenharmony_ciH1 Secure Microcontroller running Cr50 firmware provides several
462306a36Sopenharmony_cifunctions, including TPM-like functionality. It communicates over
562306a36Sopenharmony_ciSPI using the FIFO protocol described in the PTP Spec, section 6.
662306a36Sopenharmony_ci
762306a36Sopenharmony_ciRequired properties:
862306a36Sopenharmony_ci- compatible: Should be "google,cr50".
962306a36Sopenharmony_ci- spi-max-frequency: Maximum SPI frequency.
1062306a36Sopenharmony_ci
1162306a36Sopenharmony_ciExample:
1262306a36Sopenharmony_ci
1362306a36Sopenharmony_ci&spi0 {
1462306a36Sopenharmony_ci	tpm@0 {
1562306a36Sopenharmony_ci		compatible = "google,cr50";
1662306a36Sopenharmony_ci		reg = <0>;
1762306a36Sopenharmony_ci		spi-max-frequency = <800000>;
1862306a36Sopenharmony_ci	};
1962306a36Sopenharmony_ci};
20