The following commit has been merged into the timers/clocksource branch of tip:
Commit-ID: 627f3f3716a3591f5e6a6bd124c95eef85444080
Gitweb: https://git.kernel.org/tip/627f3f3716a3591f5e6a6bd124c95eef85444080
Author: Enlin Mu <enlin.mu@unisoc.com>
AuthorDate: Fri, 07 Nov 2025 14:33:47 +08:00
Committer: Daniel Lezcano <daniel.lezcano@linaro.org>
CommitterDate: Wed, 26 Nov 2025 11:25:11 +01:00
clocksource/drivers/rda: Add sched_clock_register for RDA8810PL SoC
The current system log timestamp accuracy is tick based, which can not
meet the usage requirements and needs to reach nanoseconds.
Therefore, the sched_clock_register function needs to be added.
[ dlezcano: Fixed typos ]
Signed-off-by: Enlin Mu <enlin.mu@unisoc.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://patch.msgid.link/20251107063347.3692-1-enlin.mu@linux.dev
---
drivers/clocksource/timer-rda.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/clocksource/timer-rda.c b/drivers/clocksource/timer-rda.c
index fd1199c..0be8e05 100644
--- a/drivers/clocksource/timer-rda.c
+++ b/drivers/clocksource/timer-rda.c
@@ -13,6 +13,7 @@
#include <linux/init.h>
#include <linux/interrupt.h>
+#include <linux/sched_clock.h>
#include "timer-of.h"
@@ -153,7 +154,7 @@ static struct timer_of rda_ostimer_of = {
},
};
-static u64 rda_hwtimer_read(struct clocksource *cs)
+static u64 rda_hwtimer_clocksource_read(void)
{
void __iomem *base = timer_of_base(&rda_ostimer_of);
u32 lo, hi;
@@ -167,6 +168,11 @@ static u64 rda_hwtimer_read(struct clocksource *cs)
return ((u64)hi << 32) | lo;
}
+static u64 rda_hwtimer_read(struct clocksource *cs)
+{
+ return rda_hwtimer_clocksource_read();
+}
+
static struct clocksource rda_hwtimer_clocksource = {
.name = "rda-timer",
.rating = 400,
@@ -185,6 +191,7 @@ static int __init rda_timer_init(struct device_node *np)
return ret;
clocksource_register_hz(&rda_hwtimer_clocksource, rate);
+ sched_clock_register(rda_hwtimer_clocksource_read, 64, rate);
clockevents_config_and_register(&rda_ostimer_of.clkevt, rate,
0x2, UINT_MAX);