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

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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>
This commit is contained in:
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)