[lkml]   [2013]   [Nov]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Subject[PATCH 0/7] arm: zynq: cpufreq support
Hi all,

this series targets to enable cpufreq for Zynq which needs some
preparation in the DT and clocksource driver to work.

The first two patches are cleaning up the DT. The first just removes an
invalid property and the second adds a 'cpus' node to the DT. Those
changes should be okay independently of the final cpufreq patch.

Then the cadence_ttc patches: The first one fixes an issue which - I
think - shows in combination with cpuidle. I saw a kernel WARN triggered
because the driver calls clk_get_rate() from interrupt context. 3/7
should fix that. Patches 4 and 5 then are the actual preparation for
cpufreq. And 6 is an optimization to use the timer HW a little bit more

And the final patch adds the required DT properties, platform devices
etc. to use cpufreq-cpu0 to scale the CPU frequency.


Soren Brinkmann (7):
arm: dt: zynq: Remove 'clock-ranges' from TTC nodes
arm: dt: zynq: Add 'cpus' node
clocksource/cadence_ttc: Store timer frequency in driver data
clocksource/cadence_ttc: Adjust interval in clock notifier
clocksource/cadence_ttc: Overhaul clocksource frequency adjustment
clocksource/cadence_ttc: Use only one counter
arm: zynq: Add support for cpufreq

arch/arm/boot/dts/zynq-7000.dtsi | 35 ++++-
arch/arm/mach-zynq/Kconfig | 2 +
arch/arm/mach-zynq/common.c | 3 +
drivers/clocksource/cadence_ttc_timer.c | 259 +++++++++++++++++++++-----------
4 files changed, 208 insertions(+), 91 deletions(-)


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2013-11-08 22:41    [W:0.157 / U:0.916 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site