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authorReka Norman <rekanorman@google.com>2022-09-27 16:08:08 +1000
committerFelix Held <felix-coreboot@felixheld.de>2022-09-30 13:19:05 +0000
commitd9cb72559fa0f6251cc5144688da762daca1205f (patch)
tree23df5a1f4621a23cdc58711ac75df840b19f7336 /src/mainboard/hp/folio_9480m
parenta88d5e3bcafdbc8d2cc2491a04de839eef4f6a4e (diff)
mb/google/nissa: Change TPM I2C freqeuncy to 1 MHz
Change the TPM I2C freqeuncy to 1 MHz for nivviks and nereid, and in the baseboard. Other nissa devices will be changed after verification. This saves 11 ms of boot time on nivviks and nereid. 400 kHz: 504:finished TPM initialization 272,304 (35,730) ... 512:finished TPM PCR extend 526,250 (23,729) 513:starting locking TPM 526,250 (0) 514:finished locking TPM 535,106 (8,855) 6:end of verified boot 543,927 (8,821) 1 MHz: 504:finished TPM initialization 266,293 (30,747) ... 512:finished TPM PCR extend 513,711 (20,108) 513:starting locking TPM 513,711 (0) 514:finished locking TPM 521,311 (7,599) 6:end of verified boot 528,893 (7,581) BUG=b:249201598 TEST=On nivviks and nereid, all timing requirements in the spec are met. Frequencies: nivviks - 972.01 kHz nereid - 968.99 kHz Change-Id: I9dd783527d4215ed7d79d69853a1f321ea2d8a28 Signed-off-by: Reka Norman <rekanorman@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/67942 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kangheui Won <khwon@chromium.org>
Diffstat (limited to 'src/mainboard/hp/folio_9480m')
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