TPM_CRB_CTRL_START
if (!tpm_wait_for_u32(sc, TPM_CRB_CTRL_START,
TPM_WRITE_4(dev, TPM_CRB_CTRL_START, TPM_CRB_CTRL_START_CMD);
TPM_WRITE_BARRIER(dev, TPM_CRB_CTRL_START, 4);
if (!tpm_wait_for_u32(sc, TPM_CRB_CTRL_START, mask, ~mask, timeout)) {