habanalabs/gaudi2: increase hard-reset sleep time to 2 sec

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>

diff --git a/drivers/misc/habanalabs/gaudi2/gaudi2.c b/drivers/misc/habanalabs/gaudi2/gaudi2.c
index c040e01..6ed9b3c 100644 (file)
--- 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 */