diff mbox series

[v5,2/6] clocksource: timer-npcm7xx: Enable timer 1 clock before use

Message ID 20221104161850.2889894-3-j.neuschaefer@gmx.net
State New
Headers
Series Nuvoton WPCM450 clock and reset driver |

Commit Message

Jonathan Neuschäfer Nov. 4, 2022, 4:18 p.m. UTC 
  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>
---

Daniel Lezcano mentioned that he applied this patch, but I wasn't able
to find it in linux-next, so I'm sending it again.

v5:
- no changes relative to v3

v4:
- not included

v3:
- no changes

v2:
- Provide context in pr_warn message

v1:
- https://lore.kernel.org/lkml/20220422183012.444674-3-j.neuschaefer@gmx.net/
---
 drivers/clocksource/timer-npcm7xx.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

--
2.35.1
diff mbox series

Patch

diff --git a/drivers/clocksource/timer-npcm7xx.c b/drivers/clocksource/timer-npcm7xx.c
index a00520cbb660a..9af30af5f989a 100644
--- a/drivers/clocksource/timer-npcm7xx.c
+++ b/drivers/clocksource/timer-npcm7xx.c
@@ -188,6 +188,7 @@  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);
@@ -199,6 +200,15 @@  static int __init npcm7xx_timer_init(struct device_node *np)
 	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("%pOF: Failed to get clock for timer1: %pe", np, clk);
+	}
+
 	npcm7xx_clocksource_init();
 	npcm7xx_clockevents_init();