new file mode 100644
@@ -0,0 +1,71 @@
+Freescale i.MX General Power Controller v2
+==========================================
+
+The i.MX7S/D General Power Control (GPC) block contains Power Gating
+Control (PGC) for various power domains.
+
+Required properties:
+
+- compatible: Should be "fsl,imx7d-gpc"
+
+- reg: should be register base and length as documented in the
+ datasheet
+
+- interrupts: Should contain GPC interrupt request 1
+
+Power domains contained within GPC node are generic power domain
+providers, documented in
+Documentation/devicetree/bindings/power/power_domain.txt, which are
+described as subnodes of the power gating controller 'pgc' node,
+which, in turn, is expected to contain the following:
+
+Required properties:
+
+- reg: Power domain index. Valid values are defined in
+ include/dt-bindings/power/imx7-power.h
+
+- #power-domain-cells: Should be 0
+
+Optional properties:
+
+- power-supply: Power supply used to power the domain
+
+Example:
+
+ gpc: gpc@303a0000 {
+ compatible = "fsl,imx7d-gpc";
+ reg = <0x303a0000 0x1000>;
+ interrupt-controller;
+ interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>;
+ #interrupt-cells = <3>;
+ interrupt-parent = <&intc>;
+
+ pgc {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pgc_pcie_phy: power-domain@3 {
+ #power-domain-cells = <0>;
+
+ reg = <IMX7_POWER_DOMAIN_PCIE_PHY>;
+ power-supply = <®_1p0d>;
+ };
+ };
+ };
+
+
+Specifying power domain for IP modules
+======================================
+
+IP cores belonging to a power domain should contain a 'power-domains'
+property that is a phandle for PGC node representing the domain.
+
+Example of a device that is part of the PCIE_PHY power domain:
+
+ pcie: pcie@33800000 {
+ reg = <0x33800000 0x4000>,
+ <0x4ff00000 0x80000>;
+ /* ... */
+ power-domains = <&pgc_pcie_phy>;
+ /* ... */
+ };
new file mode 100644
@@ -0,0 +1,18 @@
+/*
+ * Copyright (C) 2017 Impinj
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __DT_BINDINGS_IMX7_POWER_H__
+#define __DT_BINDINGS_IMX7_POWER_H__
+
+#define IMX7_POWER_DOMAIN_USB_HSIC_PHY 0
+#define IMX7_POWER_DOMAIN_USB_OTG2_PHY 1
+#define IMX7_POWER_DOMAIN_USB_OTG1_PHY 2
+#define IMX7_POWER_DOMAIN_PCIE_PHY 3
+#define IMX7_POWER_DOMAIN_MIPI_PHY 4
+
+#endif