MIPS: BCM63xx: Sync MIPS counters during CPU bringup

We are using the mips counters as the clock source, so we need to ensure
they are synced, else e.g. gettimeofday will return different values
depending on which core it was run.

Observed difference was about 8 seconds, causing ~8 seconds ping or time
running backwards for some programs.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: John Crispin <blogic@openwrt.org>
Cc: Maxime Bizon <mbizon@freebox.fr>
Cc: Florian Fainelli <florian@openwrt.org>
Cc: Kevin Cernekee <cernekee@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/7265/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 2a4b9bd47850..b50a1b00b68f 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -139,6 +139,7 @@ config BCM63XX
         select BOOT_RAW
         select CEVT_R4K
         select CSRC_R4K
+        select SYNC_R4K
         select DMA_NONCOHERENT
         select IRQ_CPU
         select SYS_SUPPORTS_32BIT_KERNEL