summaryrefslogtreecommitdiffstats
path: root/arch/microblaze
diff options
context:
space:
mode:
authorNicolai Stange <nicstange@gmail.com>2017-03-30 21:45:28 +0200
committerMichal Simek <michal.simek@xilinx.com>2017-05-29 11:02:43 +0200
commitbb26081a98d3db2fde37ff57f8276266b6158471 (patch)
tree73e50893c3731559e059c619427d64cba8325099 /arch/microblaze
parente56751c961eaf232f121025c29af94ab3d64feb2 (diff)
downloadlinux-bb26081a98d3db2fde37ff57f8276266b6158471.tar.gz
linux-bb26081a98d3db2fde37ff57f8276266b6158471.tar.bz2
linux-bb26081a98d3db2fde37ff57f8276266b6158471.zip
microblaze: Set ->min_delta_ticks and ->max_delta_ticks for timer
In preparation for making the clockevents core NTP correction aware, all clockevent device drivers must set ->min_delta_ticks and ->max_delta_ticks rather than ->min_delta_ns and ->max_delta_ns: a clockevent device's rate is going to change dynamically and thus, the ratio of ns to ticks ceases to stay invariant. Make the microblaze arch's clockevent driver initialize these fields properly. This patch alone doesn't introduce any change in functionality as the clockevents core still looks exclusively at the (untouched) ->min_delta_ns and ->max_delta_ns. As soon as this has changed, a followup patch will purge the initialization of ->min_delta_ns and ->max_delta_ns from this driver. Signed-off-by: Nicolai Stange <nicstange@gmail.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'arch/microblaze')
-rw-r--r--arch/microblaze/kernel/timer.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/microblaze/kernel/timer.c b/arch/microblaze/kernel/timer.c
index 999066192715..545ccd46edb3 100644
--- a/arch/microblaze/kernel/timer.c
+++ b/arch/microblaze/kernel/timer.c
@@ -178,8 +178,10 @@ static __init int xilinx_clockevent_init(void)
clockevent_xilinx_timer.shift);
clockevent_xilinx_timer.max_delta_ns =
clockevent_delta2ns((u32)~0, &clockevent_xilinx_timer);
+ clockevent_xilinx_timer.max_delta_ticks = (u32)~0;
clockevent_xilinx_timer.min_delta_ns =
clockevent_delta2ns(1, &clockevent_xilinx_timer);
+ clockevent_xilinx_timer.min_delta_ticks = 1;
clockevent_xilinx_timer.cpumask = cpumask_of(0);
clockevents_register_device(&clockevent_xilinx_timer);