[linux-sunxi] [PATCH v2 1/1] dts: sun6i: yones toptech bs1078 v2: Add AXP221 support to dts

[Lawrence Yu]

Enable the axp221 PMIC chip in the dts file.

Allows board to power off correctly from the poweroff command

This board requires dc1sw to be enabled in order to provide a power source
for the 5V DCDC converter that powers USB2 and the LCD backlight

This board uses dldo1 for 3.3V wifi power

This board requires dldo3 to be enabled at 2.8V in order to provide voltage
to the pullup resistors for the i2c0 bus.

---

Changes since v1

- Use axp22x.dtsi to standardize the register names
- Change wifi power regulator to dldo1 instead of incorrect aldo1
- Remove unnecessary gpio pin PH27 for wifi power, since this board uses
  the axp221 chip to control power to the wifi chip.

Signed-off-by: Lawrence Yu <l...@micile.com>
---
 .../dts/sun6i-a31s-yones-toptech-bs1078-v2.dts     | 98 +++++++++++++++++++---
 1 file changed, 88 insertions(+), 10 deletions(-)

diff --git a/arch/arm/boot/dts/sun6i-a31s-yones-toptech-bs1078-v2.dts 
b/arch/arm/boot/dts/sun6i-a31s-yones-toptech-bs1078-v2.dts
index b199020..98d0a83 100644
--- a/arch/arm/boot/dts/sun6i-a31s-yones-toptech-bs1078-v2.dts
+++ b/arch/arm/boot/dts/sun6i-a31s-yones-toptech-bs1078-v2.dts
@@ -113,22 +113,100 @@
        allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
 };
 
-&reg_usb1_vbus {
-       gpio = <&pio 7 27 GPIO_ACTIVE_HIGH>;
+&uart0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart0_pins_a>;
        status = "okay";
 };
 
-&usb1_vbus_pin_a {
-       allwinner,pins = "PH27";
+&p2wi {
+       status = "okay";
+
+       axp22x: pmic@68 {
+               compatible = "x-powers,axp221";
+               reg = <0x68>;
+               interrupt-parent = <&nmi_intc>;
+               interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+       };
 };
 
-&usbphy {
-       usb1_vbus-supply = <&reg_usb1_vbus>;
-       status = "okay";
+#include "axp22x.dtsi"
+
+&axp22x {
+       regulators {
+               /* Used by LCD backlight and USB2 */
+               reg_dc1sw: dc1sw {
+                       regulator-name = "dc1sw";
+                       regulator-min-microvolt = <3000000>;
+                       regulator-max-microvolt = <3000000>;
+                       regulator-name = "vcc-dc1sw";
+               };
+       };
 };
 
-&uart0 {
-       pinctrl-names = "default";
-       pinctrl-0 = <&uart0_pins_a>;
+&reg_aldo3 {
+       regulator-always-on;
+       regulator-min-microvolt = <2700000>;
+       regulator-max-microvolt = <3300000>;
+       regulator-name = "avcc";
+};
+
+&reg_dc5ldo {
+       regulator-min-microvolt = <700000>;
+       regulator-max-microvolt = <1320000>;
+       regulator-name = "vdd-cpus";
+};
+
+&reg_dcdc1 {
+       regulator-always-on;
+       regulator-min-microvolt = <3000000>;
+       regulator-max-microvolt = <3000000>;
+       regulator-name = "vcc-3v0";
+};
+
+&reg_dcdc2 {
+       regulator-min-microvolt = <700000>;
+       regulator-max-microvolt = <1320000>;
+       regulator-name = "vdd-gpu";
+};
+
+&reg_dcdc3 {
+       regulator-always-on;
+       regulator-min-microvolt = <700000>;
+       regulator-max-microvolt = <1320000>;
+       regulator-name = "vdd-cpu";
+};
+
+&reg_dcdc4 {
+       regulator-always-on;
+       regulator-min-microvolt = <700000>;
+       regulator-max-microvolt = <1320000>;
+       regulator-name = "vdd-sys-dll";
+};
+
+&reg_dcdc5 {
+       regulator-always-on;
+       regulator-min-microvolt = <1500000>;
+       regulator-max-microvolt = <1500000>;
+       regulator-name = "vcc-dram";
+};
+
+&reg_dldo1 {
+       regulator-min-microvolt = <3300000>;
+       regulator-max-microvolt = <3300000>;
+       regulator-name = "vcc-wifi";
+};
+
+/* Voltage source for I2C pullup resistors for I2C Bus 0 */
+&reg_dldo3 {
+       regulator-always-on;
+       regulator-min-microvolt = <2800000>;
+       regulator-max-microvolt = <2800000>;
+       regulator-name = "vcc-csi";
+};
+
+&usbphy {
+       usb1_vbus-supply = <&reg_dldo1>;
+       usb2_vbus-supply = <&reg_dc1sw>;
        status = "okay";
 };
-- 
2.5.3

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