mips: bmips: add bcm6328-power-domain driver support for BCM63268

This driver can control up to 32 power domains.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

arch/mips/dts/brcm,bcm63268.dtsi

@@ -6,6 +6,7 @@
 
 #include <dt-bindings/clock/bcm63268-clock.h>
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/power-domain/bcm63268-power-domain.h>
 #include <dt-bindings/reset/bcm63268-reset.h>
 #include "skeleton.dtsi"
 
@@ -118,6 +119,12 @@
 			status = "disabled";
 		};
 
+		periph_pwr: power-controller@1000184c {
+			compatible = "brcm,bcm6328-power-domain";
+			reg = <0x1000184c 0x4>;
+			#power-domain-cells = <1>;
+		};
+
 		leds: led-controller@10001900 {
 			compatible = "brcm,bcm6328-leds";
 			reg = <0x10001900 0x24>;

include/dt-bindings/power-domain/bcm63268-power-domain.h

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __DT_BINDINGS_POWER_DOMAIN_BCM63268_H
+#define __DT_BINDINGS_POWER_DOMAIN_BCM63268_H
+
+#define BCM63268_PWR_SAR	0
+#define BCM63268_PWR_IPSEC	1
+#define BCM63268_PWR_MIPS	2
+#define BCM63268_PWR_DECT	3
+#define BCM63268_PWR_USBH	4
+#define BCM63268_PWR_USBD	5
+#define BCM63268_PWR_ROBOSW	6
+#define BCM63268_PWR_PCM	7
+#define BCM63268_PWR_PERIPH	8
+#define BCM63268_PWR_VDSL_PHY	9
+#define BCM63268_PWR_VDSL_MIPS	10
+#define BCM63268_PWR_FAP	11
+#define BCM63268_PWR_PCIE	12
+#define BCM63268_PWR_WLAN_PADS	13
+
+#endif /* __DT_BINDINGS_POWER_DOMAIN_BCM63268_H */