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pwm: atmel-tcb: fix max time computation for slow clk source 

Use the the tcb counter width to compute the maximum time that can be
represented using the slow clock source instead of the static 16 bit width.

Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
hifive-unleashed-5.1
Boris BREZILLON 2013-09-18 17:06:21 +02:00 committed by Thierry Reding
parent f3a82170ae
commit ceb12f9398
1 changed files with 1 additions and 1 deletions
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drivers/pwm/pwm-atmel-tcb.c
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@ -307,7 +307,7 @@ static int atmel_tcb_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
i = slowclk;
rate = 32768;
min = div_u64(NSEC_PER_SEC, rate);
max = min << 16;
max = min << tc->tcb_config->counter_width;
/* If period is too big return ERANGE error */
if (max < period_ns)