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Commit ca9048ec authored by Thomas Abraham's avatar Thomas Abraham Committed by Kukjin Kim
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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: default avatarThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent 415ac2e2

drivers/clocksource/exynos_mct.c

+6 −1
Original line number Diff line number Diff line
@@ -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__);