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Read USBH_ENABLE twice in succession according to Errata 7 for au1500.

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This commit is contained in:
hpeyerl 2003-04-03 16:41:23 +00:00
parent 8691cfff6c
commit 5eefd45be5
1 changed files with 5 additions and 1 deletions
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6
sys/arch/mips/alchemy/dev/ohci_aubus.c
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@ -1,4 +1,4 @@
/* $NetBSD: ohci_aubus.c,v 1.1 2003/04/01 17:36:45 hpeyerl Exp $ */
/* $NetBSD: ohci_aubus.c,v 1.2 2003/04/03 16:41:23 hpeyerl Exp $ */
/*-
* Copyright (c) 1998, 1999, 2000, 2002, 2003 The NetBSD Foundation, Inc.
@ -119,7 +119,11 @@ ohci_aubus_attach(struct device *parent, struct device *self, void *aux)
x &= ~(OHCI_HCFS_MASK);
bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_CONTROL, x);
delay(10);
/* Need to read USBH_ENABLE twice in succession according to
* au1500 Errata #7.
*/
for (x = 100; x; x--) {
bus_space_read_4(sc->sc.iot, sc->sc.ioh, USBH_ENABLE);
tmp = bus_space_read_4(sc->sc.iot, sc->sc.ioh, USBH_ENABLE);
if (tmp&UE_RD)
break;