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authorLinus Walleij <linus.walleij@stericsson.com>2010-09-13 13:38:55 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-09-17 10:16:47 +0100
commit99f76891a33d130776da3b01935d978b1e75fe68 (patch)
treef4224067ddd14bde9b8730278c8bc1a9257a292d
parent03a7ab083e4d619136d6f07ce70fa9de0bc436fc (diff)
ARM: 6375/1: plat-nomadik: MTU timer trivial bug fix
timer0 to 3 are all on mtu block 0, so don't calculate the clock event rate based upon mtu block 1's clock speed. Acked-by: Alessandro Rubini <rubini@unipv.it> Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
-rw-r--r--arch/arm/plat-nomadik/timer.c16
1 files changed, 2 insertions, 14 deletions
diff --git a/arch/arm/plat-nomadik/timer.c b/arch/arm/plat-nomadik/timer.c
index ea3ca86c528..d673888af18 100644
--- a/arch/arm/plat-nomadik/timer.c
+++ b/arch/arm/plat-nomadik/timer.c
@@ -131,17 +131,12 @@ void __init nmdk_timer_init(void)
{
unsigned long rate;
struct clk *clk0;
- struct clk *clk1;
u32 cr;
clk0 = clk_get_sys("mtu0", NULL);
BUG_ON(IS_ERR(clk0));
- clk1 = clk_get_sys("mtu1", NULL);
- BUG_ON(IS_ERR(clk1));
-
clk_enable(clk0);
- clk_enable(clk1);
/*
* Tick rate is 2.4MHz for Nomadik and 110MHz for ux500:
@@ -170,15 +165,8 @@ void __init nmdk_timer_init(void)
pr_err("timer: failed to initialize clock source %s\n",
nmdk_clksrc.name);
- /* Timer 1 is used for events, fix according to rate */
- cr = MTU_CRn_32BITS;
- rate = clk_get_rate(clk1);
- if (rate > 16 << 20) {
- rate /= 16;
- cr |= MTU_CRn_PRESCALE_16;
- } else {
- cr |= MTU_CRn_PRESCALE_1;
- }
+ /* Timer 1 is used for events */
+
clockevents_calc_mult_shift(&nmdk_clkevt, rate, MTU_MIN_RANGE);
writel(cr | MTU_CRn_ONESHOT, mtu_base + MTU_CR(1)); /* off, currently */