From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Abraham Subject: [PATCH v6 11/16] clocksource: mct: add support for mct clock setup Date: Mon, 18 Feb 2013 13:51:21 +0530 Message-ID: <1361175686-19400-12-git-send-email-thomas.abraham@linaro.org> References: <1361175686-19400-1-git-send-email-thomas.abraham@linaro.org> Return-path: In-Reply-To: <1361175686-19400-1-git-send-email-thomas.abraham@linaro.org> Sender: linux-samsung-soc-owner@vger.kernel.org To: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org Cc: devicetree-discuss@lists.ozlabs.org, mturquette@linaro.org, kgene.kim@samsung.com, t.figa@samsung.com, sylvester.nawrocki@gmail.com List-Id: devicetree@vger.kernel.org Add support for mct clock lookup and setup to ensure that the mct clock is has been turned on. Cc: Kukjin Kim Signed-off-by: Thomas Abraham --- drivers/clocksource/exynos_mct.c | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c index 8f84c42..43e39b5 100644 --- a/drivers/clocksource/exynos_mct.c +++ b/drivers/clocksource/exynos_mct.c @@ -480,7 +480,7 @@ 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"); @@ -488,6 +488,11 @@ 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__); -- 1.7.5.4