diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-3.14/101-MIPS-BCM63XX-sync-mips-counter-during-cpu-bringup.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-3.14/101-MIPS-BCM63XX-sync-mips-counter-during-cpu-bringup.patch | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-3.14/101-MIPS-BCM63XX-sync-mips-counter-during-cpu-bringup.patch b/target/linux/brcm63xx/patches-3.14/101-MIPS-BCM63XX-sync-mips-counter-during-cpu-bringup.patch new file mode 100644 index 0000000000..f303c6173b --- /dev/null +++ b/target/linux/brcm63xx/patches-3.14/101-MIPS-BCM63XX-sync-mips-counter-during-cpu-bringup.patch @@ -0,0 +1,27 @@ +From 23c21090f49a64b532755542a71e9aa3e4fc84d9 Mon Sep 17 00:00:00 2001 +From: Jonas Gorski <jogo@openwrt.org> +Date: Sat, 5 Apr 2014 20:07:25 +0200 +Subject: [PATCH] MIPS: BCM63XX: sync mips counter 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> +--- + arch/mips/Kconfig | 1 + + 1 file changed, 1 insertion(+) + +--- a/arch/mips/Kconfig ++++ b/arch/mips/Kconfig +@@ -132,6 +132,7 @@ 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 |