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ARM: zynq: DT: Add 'clock-latency' property
authorSoren Brinkmann <soren.brinkmann@xilinx.com>
Fri, 4 Apr 2014 23:14:12 +0000 (16:14 -0700)
committerMichal Simek <michal.simek@xilinx.com>
Tue, 22 Apr 2014 07:30:49 +0000 (09:30 +0200)
Specify the 'clock-latency' property to avoid certain cpufreq governors
from refusing to work with the following error:
  ondemand governor failed, too long transition latency of HW, fallback to performance governor

Reported-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Tested-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
arch/arm/boot/dts/zynq-7000.dtsi patch | blob | blame | history

diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi
index 511180769af5c0fb31acd6beb58cb1031a417a1d..c39baefcfd76dc2b5220715d2314af6a51ac1cbd 100644 (file)
--- a/arch/arm/boot/dts/zynq-7000.dtsi
+++ b/arch/arm/boot/dts/zynq-7000.dtsi
@@ -24,6 +24,7 @@
                        device_type = "cpu";
                        reg = <0>;
                        clocks = <&clkc 3>;
+                       clock-latency = <1000>;
                        operating-points = <
                                /* kHz    uV */
                                666667  1000000