[U-Boot] [PATCH 03/19] ARM: zynq: DT: Add a fixed regulator for CPU voltage

[Michal Simek]

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

Sync with mainline kernel

---
 arch/arm/dts/zynq-7000.dtsi | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/dts/zynq-7000.dtsi b/arch/arm/dts/zynq-7000.dtsi
index fc5dd4d4a38e..326ab6766c56 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 at 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>;
-- 
2.3.5