clocksource:sirf: remove the hardcode for the clk of timers

Nobody want to know the connection between io clk and timer clk,
so exposing this information to timer module is not reasonable.
this patch moves to define the timers' clk in dt.

Signed-off-by: Zhiwu Song <Zhiwu.Song@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/drivers/clocksource/timer-prima2.c b/drivers/clocksource/timer-prima2.c
index 84fdb15eae79..a722aac7ac02 100644
--- a/drivers/clocksource/timer-prima2.c
+++ b/drivers/clocksource/timer-prima2.c
@@ -198,11 +198,8 @@ static void __init sirfsoc_prima2_timer_init(struct device_node *np)
         unsigned long rate;
         struct clk *clk;
 
-        /* timer's input clock is io clock */
-        clk = clk_get_sys("io", NULL);
-
+        clk = of_clk_get(np, 0);
         BUG_ON(IS_ERR(clk));
-
         rate = clk_get_rate(clk);
 
         BUG_ON(rate < PRIMA2_CLOCK_FREQ);