From mboxrd@z Thu Jan 1 00:00:00 1970 From: nicolas.ferre@atmel.com (Nicolas Ferre) Date: Thu, 19 Sep 2013 09:24:52 +0200 Subject: [PATCH 2/2] pwm: atmel-tcb: fix max time computation for slow clk source In-Reply-To: <1379516781-23379-1-git-send-email-b.brezillon@overkiz.com> References: <1379516720-23289-1-git-send-email-b.brezillon@overkiz.com> <1379516781-23379-1-git-send-email-b.brezillon@overkiz.com> Message-ID: <523AA6C4.6000305@atmel.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 18/09/2013 17:06, Boris BREZILLON : > 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 Acked-by: Nicolas Ferre > --- > drivers/pwm/pwm-atmel-tcb.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/pwm/pwm-atmel-tcb.c b/drivers/pwm/pwm-atmel-tcb.c > index 0266969..f3dcd02 100644 > --- a/drivers/pwm/pwm-atmel-tcb.c > +++ b/drivers/pwm/pwm-atmel-tcb.c > @@ -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) > -- Nicolas Ferre