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-rw-r--r--drivers/clocksource/meson6_timer.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/clocksource/meson6_timer.c b/drivers/clocksource/meson6_timer.c
index 23c7638e2bb3..84bd9479c3f8 100644
--- a/drivers/clocksource/meson6_timer.c
+++ b/drivers/clocksource/meson6_timer.c
@@ -22,6 +22,10 @@
#include <linux/of_address.h>
#include <linux/of_irq.h>
+#ifdef CONFIG_ARM
+#include <linux/delay.h>
+#endif
+
#define MESON_ISA_TIMER_MUX 0x00
#define MESON_ISA_TIMER_MUX_TIMERD_EN BIT(19)
#define MESON_ISA_TIMER_MUX_TIMERC_EN BIT(18)
@@ -54,6 +58,18 @@
static void __iomem *timer_base;
+#ifdef CONFIG_ARM
+static unsigned long meson6_read_current_timer(void)
+{
+ return readl_relaxed(timer_base + MESON_ISA_TIMERE);
+}
+
+static struct delay_timer meson6_delay_timer = {
+ .read_current_timer = meson6_read_current_timer,
+ .freq = 1000 * 1000,
+};
+#endif
+
static u64 notrace meson6_timer_sched_read(void)
{
return (u64)readl(timer_base + MESON_ISA_TIMERE);
@@ -192,6 +208,12 @@ static int __init meson6_timer_init(struct device_node *node)
clockevents_config_and_register(&meson6_clockevent, USEC_PER_SEC,
1, 0xfffe);
+
+#ifdef CONFIG_ARM
+ /* Also use MESON_ISA_TIMERE for delays */
+ register_current_timer_delay(&meson6_delay_timer);
+#endif
+
return 0;
}
TIMER_OF_DECLARE(meson6, "amlogic,meson6-timer",