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clocksource/drivers/rda: Add sched_clock_register for RDA8810PL SoC

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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
This commit is contained in:
Enlin Mu
2025-11-07 14:33:47 +08:00
committed by Daniel Lezcano
parent 6a2416892e
commit 627f3f3716
1 changed files with 8 additions and 1 deletions
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9
drivers/clocksource/timer-rda.c
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@@ -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);