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ARM: dts: sun7i: Add regulator configuration for pcDuino v3 Nano

PATCH New Adam Sampson 2 participants 2 messages Oct 10, 2015 – Oct 13, 2015

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Adam Sampson

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#0 lore raw

PATCH 1/1 ARM: dts: sun7i: Add regulator configuration for pcDuino v3 Nano

The power configuration on this board is the same as the pcDuino v3. This will enable frequency/voltage scaling over the standard A20 operating points from 144 MHz to 960 MHz.

Tested using cpufreq-ljt-stress-test on two pcDuino v3 Nano boards; also tested successfully with voltages reduced by 0.025 V.

Signed-off-by Adam Sampson <[email protected]>
---
 arch/arm/boot/dts/sun7i-a20-pcduino3-nano.dts | 35 ++++++++++++++++++++++++---
 1 file changed, 31 insertions(+), 4 deletions(-)
arch/arm/boot/dts/sun7i-a20-pcduino3-nano.dts +31 -4
index ee85e07..1757a6a 100644
@@ -82,6 +82,10 @@
 	status = "okay";
 };
 
+&cpu0 {
+	cpu-supply = <&reg_dcdc2>;
+};
+
 &ehci0 {
 	status = "okay";
 };

@@ -108,13 +112,9 @@
 	status = "okay";
 
 	axp209: pmic at 34 {
-		compatible = "x-powers,axp209";
 		reg = <0x34>;
 		interrupt-parent = <&nmi_intc>;
 		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
-
-		interrupt-controller;
-		#interrupt-cells = <1>;
 	};
 };
 

@@ -182,6 +182,33 @@
 	status = "okay";
 };
 
+#include "axp209.dtsi"
+
+&reg_dcdc2 {
+	regulator-always-on;
+	regulator-min-microvolt = <1000000>;
+	regulator-max-microvolt = <1400000>;
+	regulator-name = "vdd-cpu";
+};
+
+&reg_dcdc3 {
+	regulator-always-on;
+	regulator-min-microvolt = <1000000>;
+	regulator-max-microvolt = <1400000>;
+	regulator-name = "vdd-int-pll";
+};
+
+&reg_ldo1 {
+	regulator-name = "vdd-rtc";
+};
+
+&reg_ldo2 {
+	regulator-always-on;
+	regulator-min-microvolt = <3000000>;
+	regulator-max-microvolt = <3000000>;
+	regulator-name = "avcc";
+};
+
 /* A single regulator (U24) powers both USB host ports. */
 &reg_usb1_vbus {
 	pinctrl-0 = <&usb1_vbus_pin_pcduino3_nano>;
Signature · 1 line
2.1.4
Applied
#1 lore raw

PATCH 1/1 ARM: dts: sun7i: Add regulator configuration for pcDuino v3 Nano

Quoted 8 lines · Adam Sampson

The power configuration on this board is the same as the pcDuino v3. This will enable frequency/voltage scaling over the standard A20 operating points from 144 MHz to 960 MHz.

Tested using cpufreq-ljt-stress-test on two pcDuino v3 Nano boards; also tested successfully with voltages reduced by 0.025 V.

Signed-off-by Adam Sampson <[email protected]>

Applied, thanks!
Maxime

Signature · 10 lines
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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