diff options
Diffstat (limited to 'drivers/clocksource')
| -rw-r--r-- | drivers/clocksource/clksrc_st_lpc.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/clocksource/clksrc_st_lpc.c b/drivers/clocksource/clksrc_st_lpc.c index f38cf33..65ec467 100644 --- a/drivers/clocksource/clksrc_st_lpc.c +++ b/drivers/clocksource/clksrc_st_lpc.c @@ -16,6 +16,7 @@ #include <linux/clocksource.h> #include <linux/init.h> #include <linux/of_address.h> +#include <linux/sched_clock.h> #include <linux/slab.h> #include <dt-bindings/mfd/st-lpc.h> @@ -38,6 +39,11 @@ static void __init st_clksrc_reset(void) writel_relaxed(1, ddata.base + LPC_LPT_START_OFF); } +static u64 notrace st_clksrc_sched_clock_read(void) +{ + return (u64)readl_relaxed(ddata.base + LPC_LPT_LSB_OFF); +} + static int __init st_clksrc_init(void) { unsigned long rate; @@ -47,6 +53,8 @@ static int __init st_clksrc_init(void) rate = clk_get_rate(ddata.clk); + sched_clock_register(st_clksrc_sched_clock_read, 32, rate); + ret = clocksource_mmio_init(ddata.base + LPC_LPT_LSB_OFF, "clksrc-st-lpc", rate, 300, 32, clocksource_mmio_readl_up); |
