[PATCH 03/16] clocksource: samsung_pwm_timer: Get clock from device tree
From: Tomasz Figa <hidden>
Date: 2013-08-20 17:31:30
Also in:
linux-samsung-soc
Subsystem:
arm/samsung s3c, s5p and exynos arm architectures, clocksource, clockevent drivers, the rest · Maintainers:
Krzysztof Kozlowski, Peter Griffin, Daniel Lezcano, Thomas Gleixner, Linus Torvalds
When booting with device tree static clkdev aliases should not be used. This patch modifies the samsung_pwm_timer driver to use DT-based clock lookup when booting with device tree. Signed-off-by: Tomasz Figa <redacted> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> --- drivers/clocksource/samsung_pwm_timer.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/clocksource/samsung_pwm_timer.c b/drivers/clocksource/samsung_pwm_timer.c
index ac60f8b..ab29476 100644
--- a/drivers/clocksource/samsung_pwm_timer.c
+++ b/drivers/clocksource/samsung_pwm_timer.c@@ -368,10 +368,6 @@ static void __init samsung_clocksource_init(void) static void __init samsung_timer_resources(void) { - pwm.timerclk = clk_get(NULL, "timers"); - if (IS_ERR(pwm.timerclk)) - panic("failed to get timers clock for timer"); - clk_prepare_enable(pwm.timerclk); pwm.tcnt_max = (1UL << pwm.variant.bits) - 1;
@@ -416,6 +412,10 @@ void __init samsung_pwm_clocksource_init(void __iomem *base, memcpy(&pwm.variant, variant, sizeof(pwm.variant)); memcpy(pwm.irq, irqs, SAMSUNG_PWM_NUM * sizeof(*irqs)); + pwm.timerclk = clk_get(NULL, "timers"); + if (IS_ERR(pwm.timerclk)) + panic("failed to get timers clock for timer"); + _samsung_pwm_clocksource_init(); }
@@ -447,6 +447,10 @@ static void __init samsung_pwm_alloc(struct device_node *np, return; } + pwm.timerclk = of_clk_get_by_name(np, "timers"); + if (IS_ERR(pwm.timerclk)) + panic("failed to get timers clock for timer"); + _samsung_pwm_clocksource_init(); }
--
1.8.3.2