MXC: pwm driver fixes
- fix off-by-one error in divider calculation
- disable pwm in pwm_disable
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/plat-mxc/pwm.c b/arch/arm/plat-mxc/pwm.c
index ae34198..42dd17b 100644
--- a/arch/arm/plat-mxc/pwm.c
+++ b/arch/arm/plat-mxc/pwm.c
@@ -72,7 +72,7 @@
writel(duty_cycles, pwm->mmio_base + MX3_PWMSAR);
writel(period_cycles, pwm->mmio_base + MX3_PWMPR);
- writel(MX3_PWMCR_PRESCALER(prescale - 1) |
+ writel(MX3_PWMCR_PRESCALER(prescale) |
MX3_PWMCR_CLKSRC_IPG_HIGH | MX3_PWMCR_EN,
pwm->mmio_base + MX3_PWMCR);
} else if (cpu_is_mx1() || cpu_is_mx21()) {
@@ -118,6 +118,8 @@
void pwm_disable(struct pwm_device *pwm)
{
+ writel(0, pwm->mmio_base + MX3_PWMCR);
+
if (pwm->clk_enabled) {
clk_disable(pwm->clk);
pwm->clk_enabled = 0;