[PATCH 2/7] clocksource: timer-npcm7xx: Enable timer 1 clock before use

Jonathan Neuschäfer
2022-04-22T22:40:38Z

In the WPCM450 SoC, the clocks for each timer can be gated individually.
To prevent the timer 1 clock from being gated, enable it explicitly.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
---
drivers/clocksource/timer-npcm7xx.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/clocksource/timer-npcm7xx.c b/drivers/clocksource/timer-npcm7xx.c
index a00520cbb660a..974269b6b0c36 100644
--- a/drivers/clocksource/timer-npcm7xx.c
+++ b/drivers/clocksource/timer-npcm7xx.c
@@ -188,17 +188,29 @@ static void __init npcm7xx_clocksource_init(void)

static int __init npcm7xx_timer_init(struct device_node *np)
{
+ struct clk *clk;
int ret;

ret = timer_of_init(np, &npcm7xx_to);
- if (ret)
+ if (ret) {
+ pr_warn("timer_of_init failed: %d\n", ret);
return ret;
+ }

/* Clock input is divided by PRESCALE + 1 before it is fed */
/* to the counter */
npcm7xx_to.of_clk.rate = npcm7xx_to.of_clk.rate /
(NPCM7XX_Tx_MIN_PRESCALE + 1);

+ /* Enable the clock for timer1, if it exists */
+ clk = of_clk_get(np, 1);
+ if (clk) {
+ if (!IS_ERR(clk))
+ clk_prepare_enable(clk);
+ else
+ pr_warn("Failed to get clock for timer1: %pe", clk);
+ }
+
npcm7xx_clocksource_init();
npcm7xx_clockevents_init();

--
2.35.1