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authorLinus Walleij <linus.walleij@stericsson.com>2010-05-26 06:38:54 (GMT)
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-05-27 09:36:08 (GMT)
commitba327b1e5296b70745e50bcf0446ae8f82e3d478 (patch)
tree294184ed993e00ee735dcedc13086a7daea0d2f6 /arch/arm/mach-ux500/cpu.c
parentea208f646c8fb91c39c852e952fc911e1ad045ab (diff)
downloadlinux-fsl-qoriq-ba327b1e5296b70745e50bcf0446ae8f82e3d478.tar.xz
ARM: 6145/1: ux500 MTU clockrate correction
This adjusts the clockrate for the MTU timer. On the different UX500 variants this rate is different. The platform can also have been set up at hardware initialization, bootloader or early init for different clock speeds. To have the clock framework available early so the timers can use them, the clock initialization for Nomadik and ux500 is moved to IRQ init time. A custom per-clock callback is added to handle special cases like this. This solves a user-visible bug: without this patch the current UX500 platforms will not be synchronized to wall-clock time and the platform will drift in time. Acked-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-ux500/cpu.c')
-rw-r--r--arch/arm/mach-ux500/cpu.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/cpu.c b/arch/arm/mach-ux500/cpu.c
index d81ad02..e0fd747 100644
--- a/arch/arm/mach-ux500/cpu.c
+++ b/arch/arm/mach-ux500/cpu.c
@@ -62,6 +62,12 @@ void __init ux500_init_irq(void)
{
gic_dist_init(0, __io_address(UX500_GIC_DIST_BASE), 29);
gic_cpu_init(0, __io_address(UX500_GIC_CPU_BASE));
+
+ /*
+ * Init clocks here so that they are available for system timer
+ * initialization.
+ */
+ clk_init();
}
#ifdef CONFIG_CACHE_L2X0