ARM: dts: sunxi: Add regulators for LeMaker BananaPi

sun7i-a20-bananapi.dts doesn't contain regulator nodes for the AXP209 PMU
driver, so add them to allow for voltage-scaling with cpufreq-dt. Also
add board-specific OPP to use slightly higher voltages at lower
frequencies since Kevin Hilman reported that not all BananaPi boards run
stable at the default voltages inherited by sun7i-a20.dtsi.

Signed-off-by: Timo Sigurdsson <public_timo.s@silentcreek.de>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

diff --git a/arch/arm/boot/dts/sun7i-a20-bananapi.dts b/arch/arm/boot/dts/sun7i-a20-bananapi.dts
index 9f7b472e6725606cfd850cf1fc69b961ea6d6e20..39b6b67bf94b82e5a5b71f055e8a691e0f024192 100644 (file)
--- a/arch/arm/boot/dts/sun7i-a20-bananapi.dts
+++ b/arch/arm/boot/dts/sun7i-a20-bananapi.dts
@@ -92,6 +92,20 @@
        status = "okay";
 };
 
+&cpu0 {
+       cpu-supply = <&reg_dcdc2>;
+       operating-points = <
+               /* kHz    uV */
+               960000  1400000
+               912000  1400000
+               864000  1350000
+               720000  1250000
+               528000  1150000
+               312000  1100000
+               144000  1050000
+               >;
+};
+
 &ehci0 {
        status = "okay";
 };
@@ -119,13 +133,9 @@
        status = "okay";
 
        axp209: pmic@34 {
-               compatible = "x-powers,axp209";
                reg = <0x34>;
                interrupt-parent = <&nmi_intc>;
                interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
-
-               interrupt-controller;
-               #interrupt-cells = <1>;
        };
 };
 
@@ -182,6 +192,33 @@
        };
 };
 
+#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-dll";
+};
+
+&reg_ldo1 {
+       regulator-name = "vdd-rtc";
+};
+
+&reg_ldo2 {
+       regulator-always-on;
+       regulator-min-microvolt = <3000000>;
+       regulator-max-microvolt = <3000000>;
+       regulator-name = "avcc";
+};
+
 &reg_usb1_vbus {
        status = "okay";
 };