@@ -199,16 +199,8 @@ static cycle_t sh_tmu_clocksource_read(struct clocksource *cs)
static int sh_tmu_clocksource_enable(struct clocksource *cs)
{
struct sh_tmu_priv *p = cs_to_sh_tmu(cs);
- int ret;
-
- ret = sh_tmu_enable(p);
- if (ret)
- return ret;
- /* TODO: calculate good shift from rate and counter bit width */
- cs->shift = 10;
- cs->mult = clocksource_hz2mult(p->rate, cs->shift);
- return 0;
+ return sh_tmu_enable(p);
}
static void sh_tmu_clocksource_disable(struct clocksource *cs)
@@ -228,6 +220,16 @@ static int sh_tmu_register_clocksource(struct sh_tmu_priv *p,
cs->disable = sh_tmu_clocksource_disable;
cs->mask = CLOCKSOURCE_MASK(32);
cs->flags = CLOCK_SOURCE_IS_CONTINUOUS;
+
+ /* clk_get_rate() needs an enabled clock */
+ clk_enable(p->clk);
+ /* channel will be configured at parent clock / 4 */
+ p->rate = clk_get_rate(p->clk) / 4;
+ clk_disable(p->clk);
+ /* TODO: calculate good shift from rate and counter bit width */
+ cs->shift = 10;
+ cs->mult = clocksource_hz2mult(p->rate, cs->shift);
+
dev_info(&p->pdev->dev, "used as clock source\n");
clocksource_register(cs);
return 0;