| Message ID | 1346852127-25226-7-git-send-email-s.hauer@pengutronix.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/pwm/pwm-imx.c b/drivers/pwm/pwm-imx.c index af77045..b234288 100644 --- a/drivers/pwm/pwm-imx.c +++ b/drivers/pwm/pwm-imx.c @@ -131,16 +131,11 @@ static int imx_pwm_config_v2(struct pwm_chip *chip, cr = MX3_PWMCR_PRESCALER(prescale) | MX3_PWMCR_DOZEEN | MX3_PWMCR_WAITEN | - MX3_PWMCR_DBGEN; + MX3_PWMCR_DBGEN | MX3_PWMCR_CLKSRC_IPG_HIGH; if (imx->enabled) cr |= MX3_PWMCR_EN; - if (cpu_is_mx25()) - cr |= MX3_PWMCR_CLKSRC_IPG; - else - cr |= MX3_PWMCR_CLKSRC_IPG_HIGH; - writel(cr, imx->mmio_base + MX3_PWMCR); return 0;
The i.MX pwm core has two clocks: The ipg clock and the ipg highfreq (peripheral) clock. The ipg clock has to be enabled for this hardware to work. The actual pwm output can either be driven by the ipg clock or the ipg highfreq. The ipg highfreq has the advantage that it runs even when the SoC is in low power modes. Use the always running clock also on i.MX25. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> --- drivers/pwm/pwm-imx.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-)