2 * Copyright (c) 2009-2010 The FreeBSD Foundation
5 * This software was developed by Semihalf under sponsorship from
6 * the FreeBSD Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/kernel.h>
36 #include <sys/module.h>
39 #include <machine/intr_machdep.h>
41 #include <dev/ofw/ofw_bus.h>
42 #include <dev/ofw/ofw_bus_subr.h>
43 #include <dev/ofw/openfirm.h>
45 #include "ofw_bus_if.h"
46 #include "fdt_common.h"
49 fdt_fixup_busfreq(phandle_t root)
51 phandle_t sb, cpus, child;
55 * Do a strict check so as to skip non-SOC nodes, which also claim
56 * simple-bus compatibility such as eLBC etc.
58 if ((sb = fdt_find_compatible(root, "simple-bus", 1)) == 0)
62 * This fixup uses /cpus/ bus-frequency prop value to set simple-bus
63 * bus-frequency property.
65 if ((cpus = OF_finddevice("/cpus")) == -1)
68 if ((child = OF_child(cpus)) == 0)
71 if (OF_getprop(child, "bus-frequency", (void *)&freq,
75 OF_setprop(sb, "bus-frequency", (void *)&freq, sizeof(freq));
78 struct fdt_fixup_entry fdt_fixup_table[] = {
79 { "fsl,MPC8572DS", &fdt_fixup_busfreq },
80 { "MPC8555CDS", &fdt_fixup_busfreq },