[U-Boot] [PATCH 1/3] AHCI: Increase link timeout to 200ms
Wolfgang Denk
wd at denx.de
Sun Jul 20 01:22:07 CEST 2014
Dear Ian Campbell,
In message <1405712321-12334-1-git-send-email-ijc at hellion.org.uk> you wrote:
> In 73545f75b66d "ahci: wait longer for link" I increased the
> timeout to 40ms based on the observed behaviour of a WD disk on a
> Cubietruck. Since then Karsten Merker and myself have both
> observed timeouts with HGST disks (Karsten on Cubietruck, me on
> Cubieboard2). Increasing the timeout to ~175ms fixes this, so go
> to 200ms for a bit of headroom.
Is there not some specification anywhere which defines a maximum time that
is allowed for the link to come up?
> #define WAIT_MS_SPINUP 20000
> #define WAIT_MS_DATAIO 5000
> #define WAIT_MS_FLUSH 5000
> -#define WAIT_MS_LINKUP 40
> +#define WAIT_MS_LINKUP 200
BTW: All these names are just horrible from a name space point of view :-(
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Bus error -- please leave by the rear door.
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