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omap: timer: fix the rate setting 

The prescaler (PTV) setting must be taken into account even when the
timer input clock frequency has been set.

Signed-off-by: Dario Binacchi <dariobin@libero.it>
This commit is contained in:
Dario Binacchi 2020-12-30 00:16:22 +01:00 committed by Lokesh Vutla
parent d64b9cdcd4
commit 11326f3793
1 changed files with 3 additions and 3 deletions
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6
drivers/timer/omap-timer.c
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@ -19,8 +19,6 @@
#define TCLR_PRE_EN BIT(5) /* Pre-scaler enable */
#define TCLR_PTV_SHIFT (2) /* Pre-scaler shift value */
#define TIMER_CLOCK (V_SCLK / (2 << CONFIG_SYS_PTV))
struct omap_gptimer_regs {
unsigned int tidr; /* offset 0x00 */
unsigned char res1[12];
@ -61,7 +59,9 @@ static int omap_timer_probe(struct udevice *dev)
struct omap_timer_priv *priv = dev_get_priv(dev);
if (!uc_priv->clock_rate)
uc_priv->clock_rate = TIMER_CLOCK;
uc_priv->clock_rate = V_SCLK;
uc_priv->clock_rate /= (2 << CONFIG_SYS_PTV);
/* start the counter ticking up, reload value on overflow */
writel(0, &priv->regs->tldr);