From ca9048ec31ab5e50c79bf18eccb79396c1f24b22 Mon Sep 17 00:00:00 2001 From: Thomas Abraham Date: Sat, 9 Mar 2013 17:10:37 +0900 Subject: clocksource: mct: add support for mct clock setup Add support for mct clock lookup and setup to ensure that the mct clock is has been turned on. Signed-off-by: Thomas Abraham Signed-off-by: Kukjin Kim --- drivers/clocksource/exynos_mct.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c index f817c540126..203ac05e2b3 100644 --- a/drivers/clocksource/exynos_mct.c +++ b/drivers/clocksource/exynos_mct.c @@ -479,7 +479,7 @@ static struct local_timer_ops exynos4_mct_tick_ops __cpuinitdata = { static void __init exynos4_timer_resources(struct device_node *np) { - struct clk *tick_clk; + struct clk *mct_clk, *tick_clk; tick_clk = np ? of_clk_get_by_name(np, "fin_pll") : clk_get(NULL, "fin_pll"); @@ -487,6 +487,11 @@ static void __init exynos4_timer_resources(struct device_node *np) panic("%s: unable to determine tick clock rate\n", __func__); clk_rate = clk_get_rate(tick_clk); + mct_clk = np ? of_clk_get_by_name(np, "mct") : clk_get(NULL, "mct"); + if (IS_ERR(mct_clk)) + panic("%s: unable to retrieve mct clock instance\n", __func__); + clk_prepare_enable(mct_clk); + reg_base = np ? of_iomap(np, 0) : S5P_VA_SYSTIMER; if (!reg_base) panic("%s: unable to ioremap mct address space\n", __func__); -- cgit v1.2.3