arm64: dts: hikey: Add hi655x pmic dts node

Add the mfd hi655x dts node and regulator support on hi6220 platform.
Signed-off-by: NChen Feng <puck.chen@hisilicon.com>
Signed-off-by: NFei Wang <w.f@huawei.com>
Signed-off-by: NXinwei Kong <kong.kongxinwei@hisilicon.com>
Signed-off-by: NGuodong Xu <guodong.xu@linaro.org>
Reviewed-by: NHaojian Zhuang <haojian.zhuang@linaro.org>
Reviewed-by: NRob Herring <robh@kernel.org>
Acked-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NWei Xu <xuwei5@hisilicon.com>

arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts

@@ -6,9 +6,9 @@
  */
 
 /dts-v1/;
-
 #include "hi6220.dtsi"
 #include "hikey-pinctrl.dtsi"
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	model = "HiKey Development Board";
@@ -107,6 +107,91 @@
 			default-state = "off";
 		};
 	};
+
+	pmic: pmic@f8000000 {
+		compatible = "hisilicon,hi655x-pmic";
+		reg = <0x0 0xf8000000 0x0 0x1000>;
+		interrupt-controller;
+		#interrupt-cells = <2>;
+		pmic-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;
+
+		regulators {
+			ldo2: LDO2 {
+				regulator-name = "LDO2_2V8";
+				regulator-min-microvolt = <2500000>;
+				regulator-max-microvolt = <3200000>;
+				regulator-enable-ramp-delay = <120>;
+			};
+
+			ldo7: LDO7 {
+				regulator-name = "LDO7_SDIO";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-enable-ramp-delay = <120>;
+			};
+
+			ldo10: LDO10 {
+				regulator-name = "LDO10_2V85";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <3000000>;
+				regulator-enable-ramp-delay = <360>;
+			};
+
+			ldo13: LDO13 {
+				regulator-name = "LDO13_1V8";
+				regulator-min-microvolt = <1600000>;
+				regulator-max-microvolt = <1950000>;
+				regulator-enable-ramp-delay = <120>;
+			};
+
+			ldo14: LDO14 {
+				regulator-name = "LDO14_2V8";
+				regulator-min-microvolt = <2500000>;
+				regulator-max-microvolt = <3200000>;
+				regulator-enable-ramp-delay = <120>;
+			};
+
+			ldo15: LDO15 {
+				regulator-name = "LDO15_1V8";
+				regulator-min-microvolt = <1600000>;
+				regulator-max-microvolt = <1950000>;
+				regulator-boot-on;
+				regulator-always-on;
+				regulator-enable-ramp-delay = <120>;
+			};
+
+			ldo17: LDO17 {
+				regulator-name = "LDO17_2V5";
+				regulator-min-microvolt = <2500000>;
+				regulator-max-microvolt = <3200000>;
+				regulator-enable-ramp-delay = <120>;
+			};
+
+			ldo19: LDO19 {
+				regulator-name = "LDO19_3V0";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <3000000>;
+				regulator-enable-ramp-delay = <360>;
+			};
+
+			ldo21: LDO21 {
+				regulator-name = "LDO21_1V8";
+				regulator-min-microvolt = <1650000>;
+				regulator-max-microvolt = <2000000>;
+				regulator-always-on;
+				regulator-enable-ramp-delay = <120>;
+			};
+
+			ldo22: LDO22 {
+				regulator-name = "LDO22_1V2";
+				regulator-min-microvolt = <900000>;
+				regulator-max-microvolt = <1200000>;
+				regulator-boot-on;
+				regulator-always-on;
+				regulator-enable-ramp-delay = <120>;
+			};
+		};
+	};
 };
 
 &uart2 {