Searched hist:b650a880 (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/drivers/scsi/pm8001/ |
| H A D | pm8001_init.c | b650a880 Mon Nov 02 14:42:29 CST 2015 Benjamin Rood <benjaminjrood@gmail.com> pm80xx: wait a minimum of 500ms before issuing commands to SPCv
The documentation for the 8070 and 8072 SPCv chip explicitly states that
a minimum of 500ms must elapse before issuing commands, otherwise the
SPCv may not process them and the firmware may get into an unrecoverable
state requiring a reboot. While the Linux guys will probably think this
is 'racy', it is called out in the chip documentation and inserting this
delay makes power management function properly.
Signed-off-by: Benjamin Rood <brood@attotech.com>
Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
b650a880 Mon Nov 02 14:42:29 CST 2015 Benjamin Rood <benjaminjrood@gmail.com> pm80xx: wait a minimum of 500ms before issuing commands to SPCv
The documentation for the 8070 and 8072 SPCv chip explicitly states that
a minimum of 500ms must elapse before issuing commands, otherwise the
SPCv may not process them and the firmware may get into an unrecoverable
state requiring a reboot. While the Linux guys will probably think this
is 'racy', it is called out in the chip documentation and inserting this
delay makes power management function properly.
Signed-off-by: Benjamin Rood <brood@attotech.com>
Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
|