Module Name: src
Committed By: jmcneill
Date: Fri Oct 12 23:57:00 UTC 2018
Modified Files:
src/sys/arch/evbarm/dev: plcom.c
Log Message:
Don't write FBRD/IBRD if ref clk frequency is unknown
To generate a diff of this commit:
cvs rdiff -u -r1.54 -r1.55 src/sys/arch/evbarm/dev/plcom.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/evbarm/dev/plcom.c
diff -u src/sys/arch/evbarm/dev/plcom.c:1.54 src/sys/arch/evbarm/dev/plcom.c:1.55
--- src/sys/arch/evbarm/dev/plcom.c:1.54 Fri Oct 12 22:18:38 2018
+++ src/sys/arch/evbarm/dev/plcom.c Fri Oct 12 23:57:00 2018
@@ -1,4 +1,4 @@
-/* $NetBSD: plcom.c,v 1.54 2018/10/12 22:18:38 jmcneill Exp $ */
+/* $NetBSD: plcom.c,v 1.55 2018/10/12 23:57:00 jmcneill Exp $ */
/*-
* Copyright (c) 2001 ARM Ltd
@@ -94,7 +94,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: plcom.c,v 1.54 2018/10/12 22:18:38 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: plcom.c,v 1.55 2018/10/12 23:57:00 jmcneill Exp $");
#include "opt_plcom.h"
#include "opt_ddb.h"
@@ -1537,8 +1537,10 @@ plcom_loadchannelregs(struct plcom_softc
switch (pi->pi_type) {
case PLCOM_TYPE_PL010:
PWRITE1(pi, PL010COM_CR, 0);
- PWRITE1(pi, PL010COM_DLBL, sc->sc_ratel);
- PWRITE1(pi, PL010COM_DLBH, sc->sc_rateh);
+ if (sc->sc_frequency != 0) {
+ PWRITE1(pi, PL010COM_DLBL, sc->sc_ratel);
+ PWRITE1(pi, PL010COM_DLBH, sc->sc_rateh);
+ }
PWRITE1(pi, PL010COM_LCR, sc->sc_lcr);
/* XXX device_unit() abuse */
@@ -1552,8 +1554,10 @@ plcom_loadchannelregs(struct plcom_softc
case PLCOM_TYPE_PL011:
PWRITE4(pi, PL011COM_CR, 0);
- PWRITE1(pi, PL011COM_FBRD, sc->sc_ratel);
- PWRITE4(pi, PL011COM_IBRD, sc->sc_rateh);
+ if (sc->sc_frequency != 0) {
+ PWRITE1(pi, PL011COM_FBRD, sc->sc_ratel);
+ PWRITE4(pi, PL011COM_IBRD, sc->sc_rateh);
+ }
PWRITE1(pi, PL011COM_LCRH, sc->sc_lcr);
sc->sc_mcr_active = sc->sc_mcr;
CLR(sc->sc_cr, PL011_MCR(PL01X_MCR_RTS | PL01X_MCR_DTR));
