[PATCH 3/4] ARM: dts: da850-evm: enable cpufreq

[Bartosz Golaszewski <brgl@bgdev.pl>]

From: Bartosz Golaszewski <bgolaszewski@baylibre.com>

Enable cpufreq-dt support for da850-evm. The cvdd regulator is fixed
at 1.2V on this board so disable the lower operating points and enable
the 375MHz opp.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
 arch/arm/boot/dts/da850-evm.dts | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts
index f04bc3e15332..f63867692da4 100644
--- a/arch/arm/boot/dts/da850-evm.dts
+++ b/arch/arm/boot/dts/da850-evm.dts
@@ -151,6 +151,15 @@
 			system-clock-frequency = <24576000>;
 		};
 	};
+
+	cvdd: regulator0 {
+		compatible = "regulator-fixed";
+		regulator-name = "cvdd";
+		regulator-min-microvolt = <1200000>;
+		regulator-max-microvolt = <1200000>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
 };
 
 &ecap2 {
@@ -191,6 +200,27 @@
 	};
 };
 
+&cpu {
+	cpu-supply = <&cvdd>;
+};
+
+/*
+ * DA850-EVM has a fixed CVDD of 1.2V - we cannot go below 300MHz or
+ * above 375MHz.
+ */
+
+&opp_100 {
+	status = "disabled";
+};
+
+&opp_200 {
+	status = "disabled";
+};
+
+&opp_375 {
+	status = "okay";
+};
+
 &sata {
 	status = "okay";
 };
-- 
2.20.1