1system_ss.add(when: 'CONFIG_TPM_TIS', if_true: files('tpm_tis_common.c')) 2system_ss.add(when: 'CONFIG_TPM_TIS_ISA', if_true: files('tpm_tis_isa.c')) 3system_ss.add(when: 'CONFIG_TPM_TIS_SYSBUS', if_true: files('tpm_tis_sysbus.c')) 4system_ss.add(when: 'CONFIG_TPM_TIS_I2C', if_true: files('tpm_tis_i2c.c')) 5system_ss.add(when: 'CONFIG_TPM_CRB', if_true: files('tpm_crb.c')) 6system_ss.add(when: 'CONFIG_TPM_TIS', if_true: files('tpm_ppi.c')) 7system_ss.add(when: 'CONFIG_TPM_CRB', if_true: files('tpm_ppi.c')) 8 9specific_ss.add(when: 'CONFIG_TPM_SPAPR', if_true: files('tpm_spapr.c')) 10