From: Michal Simek <michal.simek@xilinx.com>
Date: Wed, 22 Jul 2015 08:38:45 +0000 (+0200)
Subject: ARM: zynq: DT: Add a fixed regulator for CPU voltage
X-Git-Tag: v2015.10-rc1~28^2~23
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bece06ce0ce3810cd60930da7ef97e75960da673;p=platform%2Fkernel%2Fu-boot.git

ARM: zynq: DT: Add a fixed regulator for CPU voltage

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>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

diff --git a/arch/arm/dts/zynq-7000.dtsi b/arch/arm/dts/zynq-7000.dtsi
index fc5dd4d..326ab67 100644
--- a/arch/arm/dts/zynq-7000.dtsi
+++ b/arch/arm/dts/zynq-7000.dtsi
@@ -21,6 +21,7 @@
 			reg = <0>;
 			clocks = <&clkc 3>;
 			clock-latency = <1000>;
+			cpu0-supply = <&regulator_vccpint>;
 			operating-points = <
 				/* kHz    uV */
 				666667  1000000
@@ -44,6 +45,15 @@
 		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>;