[PATCH 2/7] habanalabs/gaudi2: increase hard-reset sleep time to 2 sec

Oded Gabbay
2022-09-18T11:37:40Z

From: Tomer Tayar <ttayar@habana.ai>

The access to the device registers is blocked during hard reset, until
preboot runs and allows the access to specific registers, including the
PSOC BTM_FSM register which is used to know when the reset is done.
Between the reset request and until this register is polled there is a
small delay of 500 msec which is not enough for F/W to process the reset
and for preboot to run, so the register might be accessed while it is
blocked.
To avoid it, increase the delay to 2 sec.

Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
---
drivers/misc/habanalabs/gaudi2/gaudi2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/habanalabs/gaudi2/gaudi2.c b/drivers/misc/habanalabs/gaudi2/gaudi2.c
index c040e01adafe..6ed9b3ce16dd 100644
--- a/drivers/misc/habanalabs/gaudi2/gaudi2.c
+++ b/drivers/misc/habanalabs/gaudi2/gaudi2.c
@@ -21,7 +21,7 @@

#define GAUDI2_DMA_POOL_BLK_SIZE SZ_256 /* 256 bytes */

-#define GAUDI2_RESET_TIMEOUT_MSEC 500 /* 500ms */
+#define GAUDI2_RESET_TIMEOUT_MSEC 2000 /* 2000ms */
#define GAUDI2_RESET_POLL_TIMEOUT_USEC 50000 /* 50ms */
#define GAUDI2_PLDM_HRESET_TIMEOUT_MSEC 25000 /* 25s */
#define GAUDI2_PLDM_SRESET_TIMEOUT_MSEC 25000 /* 25s */
--
2.25.1