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Diffstat (limited to 'drivers/pwm/pwm-omap-dmtimer.c')
-rw-r--r--drivers/pwm/pwm-omap-dmtimer.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/pwm/pwm-omap-dmtimer.c b/drivers/pwm/pwm-omap-dmtimer.c
index e0679eb399f6..b7e6ecba7d5c 100644
--- a/drivers/pwm/pwm-omap-dmtimer.c
+++ b/drivers/pwm/pwm-omap-dmtimer.c
@@ -102,7 +102,8 @@ static int pwm_omap_dmtimer_config(struct pwm_chip *chip,
unsigned long clk_rate;
bool timer_active;
- dev_dbg(chip->dev, "duty cycle: %d, period %d\n", duty_ns, period_ns);
+ dev_dbg(chip->dev, "requested duty cycle: %d ns, period: %d ns\n",
+ duty_ns, period_ns);
mutex_lock(&omap->mutex);
if (duty_ns == pwm_get_duty_cycle(pwm) &&
@@ -166,6 +167,12 @@ static int pwm_omap_dmtimer_config(struct pwm_chip *chip,
duty_cycles = period_cycles - 1;
}
+ dev_dbg(chip->dev, "effective duty cycle: %lld ns, period: %lld ns\n",
+ DIV_ROUND_CLOSEST_ULL((u64)NSEC_PER_SEC * duty_cycles,
+ clk_rate),
+ DIV_ROUND_CLOSEST_ULL((u64)NSEC_PER_SEC * period_cycles,
+ clk_rate));
+
load_value = (DM_TIMER_MAX - period_cycles) + 1;
match_value = load_value + duty_cycles - 1;