clocksource/mtu-nomadik: use apb_pclk

After improving the clock tree we need to make sure the the
MTU timer explicitly grabs and enables it silicon clock
(pclk).

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Mike Turquette <mturquette@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/clocksource/nomadik-mtu.c b/drivers/clocksource/nomadik-mtu.c
index 23c780ba0d3..8914c3c1c88 100644
--- a/drivers/clocksource/nomadik-mtu.c
+++ b/drivers/clocksource/nomadik-mtu.c
@@ -177,9 +177,15 @@ void nmdk_clksrc_reset(void)
 void __init nmdk_timer_init(void __iomem *base, int irq)
 {
         unsigned long rate;
-        struct clk *clk0;
+        struct clk *clk0, *pclk0;
 
         mtu_base = base;
+
+        pclk0 = clk_get_sys("mtu0", "apb_pclk");
+        BUG_ON(IS_ERR(pclk0));
+        BUG_ON(clk_prepare(pclk0) < 0);
+        BUG_ON(clk_enable(pclk0) < 0);
+
         clk0 = clk_get_sys("mtu0", NULL);
         BUG_ON(IS_ERR(clk0));
         BUG_ON(clk_prepare(clk0) < 0);