diff options
| -rw-r--r-- | drivers/clocksource/bcm_kona_timer.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/clocksource/bcm_kona_timer.c b/drivers/clocksource/bcm_kona_timer.c index 5176e761166..974b2db2fe1 100644 --- a/drivers/clocksource/bcm_kona_timer.c +++ b/drivers/clocksource/bcm_kona_timer.c @@ -17,6 +17,7 @@ #include <linux/jiffies.h> #include <linux/clockchips.h> #include <linux/types.h> +#include <linux/clk.h> #include <linux/io.h> #include <asm/mach/time.h> @@ -101,11 +102,18 @@ kona_timer_get_counter(void *timer_base, uint32_t *msw, uint32_t *lsw) static void __init kona_timers_init(struct device_node *node) { u32 freq; + struct clk *external_clk; - if (!of_property_read_u32(node, "clock-frequency", &freq)) + external_clk = of_clk_get_by_name(node, NULL); + + if (!IS_ERR(external_clk)) { + arch_timer_rate = clk_get_rate(external_clk); + clk_prepare_enable(external_clk); + } else if (!of_property_read_u32(node, "clock-frequency", &freq)) { arch_timer_rate = freq; - else - panic("clock-frequency not set in the .dts file"); + } else { + panic("unable to determine clock-frequency"); + } /* Setup IRQ numbers */ timers.tmr_irq = irq_of_parse_and_map(node, 0); |