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Don't apply 5V when we want 3.3V.

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Kludge around the case where the PCIC refuses to use 5V because it knows
better than us.
This commit is contained in:
Poul-Henning Kamp 1997-05-22 07:29:24 +00:00
parent c5318f2363
commit 0084fb021b
1 changed files with 9 additions and 1 deletions
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10
sys/pccard/pcic.c
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@ -948,7 +948,7 @@ pcic_power(struct slot *slotp)
reg |= PCIC_VCC_5V_KING;
break;
}
reg |= PCIC_VCC_5V;
reg |= PCIC_VCC_3V;
if ((sp->controller == PCIC_VG468)||
(sp->controller == PCIC_VG469))
setb(sp, 0x2f, 0x03) ;
@ -977,6 +977,14 @@ pcic_power(struct slot *slotp)
sp->putb (sp, PCIC_POWER, reg);
DELAY (100*1000);
}
/* Some chips are smarter than us it seems, so if we weren't
* allowed to use 5V, try 3.3 instead
*/
if (!(sp->getb(sp, PCIC_STATUS) & 0x40) && slotp->pwr.vcc == 50) {
slotp->pwr.vcc = 33;
slotp->pwr.vpp = 0;
return (pcic_power(slotp));
}
return(0);
}