Loic Poulain 8c0fd741ee usb: increase firehose raw write timeout to 10 seconds ...

During QRB2210 provisioning, a USB write failure has been
observed early in the Firehose phase (first block write).
This issue has been traced to a timeout during the USB
bulk transfer of the Zero-Length Packet (ZLP).

In some conditions, the ZLP transfer may take longer than
the current timeout, up to approximately 1.7 seconds.

The issue specifically occurs after a prior large eMMC write
operation (e.g., during a previous QDL session). It could then
be related to internal eMMC I/O operations or timing delays
affecting the USB ack.

To resolve this issue, we introduce a timeout parameter to the
qdl_write function, consistent with the existing qdl_read, and
we increase the timeout to 10 seconds for Firehose raw binary
write operations to avoid 'false-positive' timeout.

Signed-off-by: Loic Poulain <loic.poulain@oss.qualcomm.com>

2025-11-03 14:37:47 -06:00

1.5 KiB

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