ARM: dts: da850-lego-ev3: enable cpufreq

Add a fixed regulator for the LEGO EV3 board along with board-specific CPU configuration. Signed-off-by: David Lechner <[email protected]> Signed-off-by: Bartosz Golaszewski <[email protected]> Signed-off-by: Sekhar Nori <[email protected]>
tadfisher · Jun 14, 2019 · 3975205 · 3975205
1 parent 3be5c74
commit 3975205
Showing 1 changed file with 30 additions and 0 deletions.
diff --git a/arch/arm/boot/dts/da850-lego-ev3.dts b/arch/arm/boot/dts/da850-lego-ev3.dts
@@ -125,6 +125,15 @@
 		amp-supply = <&amp>;
 	};
 
+	cvdd: regulator0 {
+		compatible = "regulator-fixed";
+		regulator-name = "cvdd";
+		regulator-min-microvolt = <1200000>;
+		regulator-max-microvolt = <1200000>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
+
 	/*
 	 * This is a 5V current limiting regulator that is shared by USB,
 	 * the sensor (input) ports, the motor (output) ports and the A/DC.
@@ -204,6 +213,27 @@
 	clock-frequency = <24000000>;
 };
 
+&cpu {
+	cpu-supply = <&cvdd>;
+};
+
+/* since we have a fixed regulator, we can't run at these points */
+&opp_100 {
+	status = "disabled";
+};
+
+&opp_200 {
+	status = "disabled";
+};
+
+/*
+ * The SoC is actually the 456MHz version, but because of the fixed regulator
+ * This is the fastest we can go.
+ */
+&opp_375 {
+	status = "okay";
+};
+
 &pmx_core {
 	status = "okay";