mips: bmips: add bcm6328-power-domain driver support for BCM6328

This driver can control up to 32 power domains.

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

arch/mips/dts/brcm,bcm6328.dtsi

@@ -6,6 +6,7 @@
 
 #include <dt-bindings/clock/bcm6328-clock.h>
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/power-domain/bcm6328-power-domain.h>
 #include <dt-bindings/reset/bcm6328-reset.h>
 #include "skeleton.dtsi"
 
@@ -111,6 +112,12 @@
 			status = "disabled";
 		};
 
+		periph_pwr: power-controller@10001848 {
+			compatible = "brcm,bcm6328-power-domain";
+			reg = <0x10001848 0x4>;
+			#power-domain-cells = <1>;
+		};
+
 		memory-controller@10003000 {
 			compatible = "brcm,bcm6328-mc";
 			reg = <0x10003000 0x1000>;

include/dt-bindings/power-domain/bcm6328-power-domain.h

@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __DT_BINDINGS_POWER_DOMAIN_BCM6328_H
+#define __DT_BINDINGS_POWER_DOMAIN_BCM6328_H
+
+#define BCM6328_PWR_ADSL2_MIPS	0
+#define BCM6328_PWR_ADSL2_PHY	1
+#define BCM6328_PWR_ADSL2_AFE	2
+#define BCM6328_PWR_SAR		3
+#define BCM6328_PWR_PCM		4
+#define BCM6328_PWR_USBD	5
+#define BCM6328_PWR_USBH	6
+#define BCM6328_PWR_PCIE	7
+#define BCM6328_PWR_ROBOSW	8
+#define BCM6328_PWR_EPHY	9
+
+#endif /* __DT_BINDINGS_POWER_DOMAIN_BCM6328_H */