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, git@xilinx.com,
Soren Brinkmann <soren.brinkmann@xilinx.com>
Subject: [PATCH] ARM: zynq: dt: Add a fixed regulator for CPU voltage
Date: Fri, 2 May 2014 14:07:32 -0700 [thread overview]
Message-ID: <1399064852-19569-1-git-send-email-soren.brinkmann@xilinx.com> (raw)
To silence the warning
cpufreq_cpu0: failed to get cpu0 regulator: -19
from the cpufreq driver regarding a missing regulator,
add a fixed regulator to the DT.
Zynq does not support voltage scaling and the CPU rail should always be
supplied with 1 V, hence it is added in the SOC-level dtsi.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
---
arch/arm/boot/dts/zynq-7000.dtsi | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi
index c1176abc34d9..64779f9d5c38 100644
--- a/arch/arm/boot/dts/zynq-7000.dtsi
+++ b/arch/arm/boot/dts/zynq-7000.dtsi
@@ -25,6 +25,7 @@
reg = <0>;
clocks = <&clkc 3>;
clock-latency = <1000>;
+ cpu0-supply = <®ulator_vccpint>;
operating-points = <
/* kHz uV */
666667 1000000
@@ -48,6 +49,15 @@
reg = < 0xf8891000 0x1000 0xf8893000 0x1000 >;
};
+ regulator_vccpint: fixedregulator@0 {
+ compatible = "regulator-fixed";
+ regulator-name = "VCCPINT";
+ regulator-min-microvolt = <1000000>;
+ regulator-max-microvolt = <1000000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
amba {
compatible = "simple-bus";
#address-cells = <1>;
--
1.9.2.1.g06c4abd
next reply other threads:[~2014-05-02 21:07 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-02 21:07 Soren Brinkmann [this message]
2014-05-15 14:57 ` [PATCH] ARM: zynq: dt: Add a fixed regulator for CPU voltage Sören Brinkmann
2014-05-16 12:54 ` Michal Simek
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