From: Soren Brinkmann <soren.brinkmann@xilinx.com>
To: Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Kumar Gala <galak@codeaurora.org>,
Russell King <linux@arm.linux.org.uk>,
Michal Simek <michal.simek@xilinx.com>
Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
"Sören Brinkmann" <soren.brinkmann@xilinx.com>,
"Steffen Trumtrar" <s.trumtrar@pengutronix.de>,
"Mike Looijmans" <mike.looijmans@topic.nl>
Subject: [PATCH v2 1/5] ARM: zynq: DT: Add 'clock-latency' property
Date: Fri, 4 Apr 2014 16:14:12 -0700 [thread overview]
Message-ID: <1396653256-28397-2-git-send-email-soren.brinkmann@xilinx.com> (raw)
In-Reply-To: <1396653256-28397-1-git-send-email-soren.brinkmann@xilinx.com>
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(+)
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
--
1.9.1.1.gbb9f595
next prev parent reply other threads:[~2014-04-04 23:14 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-04 23:14 [PATCH v2 0/5] ARM: zynq: DT update Soren Brinkmann
2014-04-04 23:14 ` Soren Brinkmann [this message]
2014-04-07 5:46 ` [PATCH v2 1/5] ARM: zynq: DT: Add 'clock-latency' property Michal Simek
2014-04-11 19:41 ` Sören Brinkmann
2014-04-04 23:14 ` [PATCH v2 2/5] ARM: zynq: dt: Convert to preprocessor includes Soren Brinkmann
2014-04-07 5:58 ` Michal Simek
2014-04-07 12:17 ` Mike Looijmans
2014-04-07 12:24 ` Michal Simek
2014-04-07 17:10 ` Jason Gunthorpe
2014-04-07 18:02 ` Steffen Trumtrar
2014-04-08 7:03 ` Michal Simek
2014-04-08 17:27 ` Jason Gunthorpe
2014-04-10 10:44 ` Michal Simek
2014-04-07 15:39 ` Sören Brinkmann
2014-04-04 23:14 ` [PATCH v2 3/5] ARM: zynq: dt: Use #defines for interrupt specifiers Soren Brinkmann
2014-04-04 23:14 ` [PATCH v2 4/5] dt-bindings: clock: Add Zynq-7000 header Soren Brinkmann
2014-04-04 23:14 ` [PATCH v2 5/5] ARM: zynq: dt: Use #defines for clock specifiers Soren Brinkmann
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