bcm47xx: prepare to support different buses

Prepare bcm47xx to support different System buses. Before adding
support for bcma it should be possible to build bcm47xx without the
need of ssb. With this patch bcm47xx does not directly contain a
ssb_bus, but a union contain all the supported system buses. As a SoC
just uses one system bus a union is a good choice.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/arch/mips/bcm47xx/time.c b/arch/mips/bcm47xx/time.c
index 0c6f47b3fd94..50aea2e1808c 100644
--- a/arch/mips/bcm47xx/time.c
+++ b/arch/mips/bcm47xx/time.c
@@ -30,7 +30,7 @@
 
 void __init plat_time_init(void)
 {
-        unsigned long hz;
+        unsigned long hz = 0;
 
         /*
          * Use deterministic values for initial counter interrupt
@@ -39,7 +39,12 @@ void __init plat_time_init(void)
         write_c0_count(0);
         write_c0_compare(0xffff);
 
-        hz = ssb_cpu_clock(&ssb_bcm47xx.mipscore) / 2;
+        switch (bcm47xx_bus_type) {
+        case BCM47XX_BUS_TYPE_SSB:
+                hz = ssb_cpu_clock(&bcm47xx_bus.ssb.mipscore) / 2;
+                break;
+        }
+
         if (!hz)
                 hz = 100000000;