kernel/linux.git/drivers/clocksource/timer-gx6605s.c, branch linux-7.1.yLinux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=linux-7.1.y2020-08-24T11:01:39+00:00clocksource/drivers/timer-gx6605s: Fixup counter reload2020-08-24T11:01:39+00:00Guo Renguoren@linux.alibaba.com2020-08-18T07:31:17+00:00urn:sha1:bc6717d55d07110d8f3c6d31ec2af50c11b07091
When the timer counts to the upper limit, an overflow interrupt is
generated, and the count is reset with the value in the TIME_INI
register. But the software expects to start counting from 0 when
the count overflows, so it forces TIME_INI to 0 to solve the
potential interrupt storm problem.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Tested-by: Xu Kai <xukai@nationalchip.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/1597735877-71115-1-git-send-email-guoren@kernel.org
clocksource/drivers/c-sky: Add gx6605s SOC system timer2018-11-02T18:41:12+00:00Guo Renren_guo@c-sky.com2018-11-02T16:51:30+00:00urn:sha1:33745c3cc588d9d5e18d6fd88709002158dddd5e
The driver is for gx6605s SOC system timer and there are two
same timers in gx6605s. We use one for clkevt and another one for
clksrc.
The timer is mmio map to access, so we need give mmio address in dts.
The counter at 0x0 offset is clock event.
The counter at 0x40 offset is clock source.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>