diff options
| author | Shelley Chen <shchen@chromium.org> | 2017-12-15 15:25:08 -0800 |
|---|---|---|
| committer | Shelley Chen <shchen@google.com> | 2017-12-18 00:37:44 +0000 |
| commit | f2e7b37c52cac5e7825d0e01b3c45c1506e99253 (patch) | |
| tree | f560630315c3be0550bbf96cc447cb6f786fb56e /src | |
| parent | decd062875c1e33d4c9203c2edc0652792a46e73 (diff) | |
spi/tpm: Clear pending irqs during tpm2_init
Seeing some instances were cr50 spi driver is starting a new
transaction without getting a ready interrupt from cr50, which means
that there are pending interrupts. Clearing these to be sure there
are not any stale irqs for the next transaction.
BUG=b:69567837
BRANCH=None
TEST=run FAFT and see if any 0x2b recovery boots occur
Change-Id: Ie099da9f2b3c4da417648ae10a5ba356b7a093ff
Signed-off-by: Shelley Chen <shchen@chromium.org>
Reviewed-on: https://review.coreboot.org/22909
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/drivers/spi/tpm/tpm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/drivers/spi/tpm/tpm.c b/src/drivers/spi/tpm/tpm.c index e1fec28a41..ceec0b0bc6 100644 --- a/src/drivers/spi/tpm/tpm.c +++ b/src/drivers/spi/tpm/tpm.c @@ -429,6 +429,9 @@ int tpm2_init(struct spi_slave *spi_if) memcpy(spi_slave, spi_if, sizeof(*spi_if)); + /* clear any pending irqs */ + tis_plat_irq_status(); + /* * 150 ms should be enough to synchronize with the TPM even under the * worst nested reset request conditions. In vast majority of cases |