diff mbox

[v2,1/5] ARM: zynq: DT: Add 'clock-latency' property

Message ID 1396653256-28397-2-git-send-email-soren.brinkmann@xilinx.com (mailing list archive)
State New, archived
Headers show

Commit Message

Soren Brinkmann April 4, 2014, 11:14 p.m. UTC 
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>
---
This is a fix from our vendor tree

Changes in v2:
 - This patch has been added

---
 arch/arm/boot/dts/zynq-7000.dtsi | 1 +
 1 file changed, 1 insertion(+)

Comments

Michal Simek April 7, 2014, 5:46 a.m. UTC | #1 
On 04/05/2014 01:14 AM, Soren Brinkmann wrote:
> 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>
> ---
> This is a fix from our vendor tree
> 
> Changes in v2:
>  - This patch has been added
> 
> ---
>  arch/arm/boot/dts/zynq-7000.dtsi | 1 +
>  1 file changed, 1 insertion(+)

Applied to zynq-dt.

Thanks,
Michal
Soren Brinkmann April 11, 2014, 7:41 p.m. UTC | #2 
On Mon, 2014-04-07 at 07:46AM +0200, Michal Simek wrote:
> On 04/05/2014 01:14 AM, Soren Brinkmann wrote:
> > 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>
> > ---
> > This is a fix from our vendor tree
> > 
> > Changes in v2:
> >  - This patch has been added
> > 
> > ---
> >  arch/arm/boot/dts/zynq-7000.dtsi | 1 +
> >  1 file changed, 1 insertion(+)
> 
> Applied to zynq-dt.

Actually, this should probably go in as fix into the current (3.15)
release cycle.

	Thanks,
	Sören
diff mbox

Patch

diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi
index 789d0bacc110..20a13cba65a3 100644
--- 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