Messages in this thread Patch in this message | | | From | Baolin Wang <> | Subject | [PATCH 6/8] clocksource: time-pistachio: Register the persistent clock | Date | Wed, 13 Jun 2018 19:32:33 +0800 |
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Since the timer on pistachio platform is always available, we can register it as one persistent clock to compensate the suspend time for the OS time.
Signed-off-by: Baolin Wang <baolin.wang@linaro.org> --- drivers/clocksource/Kconfig | 1 + drivers/clocksource/time-pistachio.c | 3 +++ 2 files changed, 4 insertions(+)
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index 3cd136f..af552ba 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -255,6 +255,7 @@ config CLKSRC_PISTACHIO bool "Clocksource for Pistachio SoC" if COMPILE_TEST depends on HAS_IOMEM select TIMER_OF + select PERSISTENT_CLOCK help Enables the clocksource for the Pistachio SoC. diff --git a/drivers/clocksource/time-pistachio.c b/drivers/clocksource/time-pistachio.c index a2dd85d..5c3eb71 100644 --- a/drivers/clocksource/time-pistachio.c +++ b/drivers/clocksource/time-pistachio.c @@ -20,6 +20,7 @@ #include <linux/mfd/syscon.h> #include <linux/of.h> #include <linux/of_address.h> +#include <linux/persistent_clock.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/sched_clock.h> @@ -212,6 +213,8 @@ static int __init pistachio_clksrc_of_init(struct device_node *node) raw_spin_lock_init(&pcs_gpt.lock); sched_clock_register(pistachio_read_sched_clock, 32, rate); + persistent_clock_init_and_register(pistachio_read_sched_clock, + CLOCKSOURCE_MASK(32), rate, 0); return clocksource_register_hz(&pcs_gpt.cs, rate); } TIMER_OF_DECLARE(pistachio_gptimer, "img,pistachio-gptimer", -- 1.7.9.5
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