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>
diff --git a/src/drivers/spi/tpm/tpm.c b/src/drivers/spi/tpm/tpm.c
index e1fec28..ceec0b0 100644
--- a/src/drivers/spi/tpm/tpm.c
+++ b/src/drivers/spi/tpm/tpm.c
@@ -429,6 +429,9 @@
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