diff --git a/Documentation/devicetree/bindings/pinctrl/nvidia,tegra210-io-pad.txt b/Documentation/devicetree/bindings/pinctrl/nvidia,tegra210-io-pad.txt
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+NVIDIA Tegra210 PMC IO pad controller
+
+NVIDIA Tegra210 supports IO pads which can operate at 1.8V or 3.3V I/O
+power rail voltages. SW needs to configure the voltage level of IO pads
+based on platform specific power tree.
+
+The voltage configurations of IO pads should be done in boot if it is not
+going to change other wise dynamically based on IO rail voltage on that
+IO pads.
+
+The node for the Tegra210 io-pad driver must be sub node of pmc@0,7000e400.
+
+Required properties:
+- compatible: "nvidia,tegra210-io-pad"
+
+Please refer to <pinctrl-bindings.txt> in this directory for details of the
+common pinctrl bindings used by client devices, including the meaning of the
+phrase "pin configuration node".
+
+Tegra's pin configuration nodes act as a container for an arbitrary number of
+subnodes. Each of these subnodes represents some desired configuration for an
+IO pads, or a list of IO pads. This configuration can include the voltage and
+power enable/disable control
+
+The name of each subnode is not important; all subnodes should be enumerated
+and processed purely based on their content. Each subnode only affects those
+parameters that are explicitly listed. Unspecified is represented as an absent
+property,
+
+See the TRM to determine which properties and values apply to each IO pads.
+Macro values for property values are defined in
+<dt-bindings/pinctrl/pinctrl-tegra210-io-pad.h>
+
+The voltage supported on the pads are 1.8V and 3.3V. The enums are defined as:
+	For 1.8V, use TEGRA210_IO_RAIL_1800000UV
+	For 3.3V, use TEGRA210_IO_RAIL_3300000UV
+
+Required subnode-properties:
+==========================
+- pins : An array of strings. Each string contains the name of an IO pads. Valid
+	 values for these names are listed below.
+
+Optional subnode-properties:
+==========================
+-nvidia,io-rail-voltage:	Integer. The voltage level of IO pads. The
+				valid values are 1.8V and 3.3V. Macros are
+				defined for these voltage levels in
+				<dt-bindings/pinctrl/pinctrl-tegra210-io-pad.h>
+					Use TEGRA210_IO_RAIL_1800000UV for 1.8V
+					Use TEGRA210_IO_RAIL_3300000UV for 3.3V
+
+-nvidia,io-pad-deep-power-down: Integer, representing the deep power down state
+				of the IO pads. If this is enable then IO pads
+				will be in power down state and interface is not
+				enabled for any transaction. This is power
+				saving mode of the IO pads. The macros are
+				defined for enable/disable in
+				<dt-bindings/pinctrl/pinctrl-tegra210-io-pad.h>
+				  TEGRA210_IO_PAD_DEEP_POWER_DOWN_DISABLE for
+					disable.
+				  TEGRA210_IO_PAD_DEEP_POWER_DOWN_ENABLE for
+					enable.
+Valid values for pin are:
+	audio, audio-hv, cam, csia, csib, csic, csid, csie, csif,
+	dbg, debug-nonao, dmic, dp, dsi, dsib, dsic, dsid, emmc, emmc2,
+	gpio, hdmi, hsic, lvds, mipi-bias, pex-bias, pex-clk1, pex-clk2,
+	pex-ctrl, sdmmc1, sdmmc3, spi, spi-hv, uart, usb-bias, usb0,
+	usb1, usb2, usb3.
+
+All IO pads do not support the 1.8V/3.3V configurations. Valid values for
+nvidia,io-rail-voltage are:
+	audio-hv, dmic, gpio, sdmmc1, sdmmc3, spi-hv.
+
+All above IO pads supports the deep power down state.
+
+Example:
+	#include <dt-bindings/pinctrl/pinctrl-tegra210-io-pad.h>
+	pmc@0,7000e400 {
+		pmc-pad-control {
+			compatible = "nvidia,tegra210-io-pad";
+			pinctrl-names = "default";
+			pinctrl-0 = <&tegra_io_pad_volt_default>;
+			tegra_io_pad_volt_default: common {
+				audio {
+					pins = "audio";
+					nvidia,io-pad-deep-power-down = <TEGRA210_IO_PAD_DEEP_POWER_DOWN_DISABLE>;
+				};
+				audio-hv {
+					pins = "audio-hv";
+					nvidia,io-rail-voltage = <TEGRA210_IO_RAIL_1800000UV>;
+				};
+				gpio {
+					pins = "gpio";
+					nvidia,io-rail-voltage = <TEGRA210_IO_RAIL_1800000UV>;
+				};
+				rest {
+					pins = "dmic", "sdmmc1", "sdmmc3";
+					nvidia,io-rail-voltage = <TEGRA210_IO_RAIL_1800000UV>;
+				};
+			};
+		};
+	};
diff --git a/include/dt-bindings/pinctrl/pinctrl-tegra210-io-pad.h b/include/dt-bindings/pinctrl/pinctrl-tegra210-io-pad.h
new file mode 100644
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+++ b/include/dt-bindings/pinctrl/pinctrl-tegra210-io-pad.h
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+/*
+ * This header provides constants for Tegra210 IO pads pinctrl bindings.
+ *
+ * Copyright (c) 2016, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Author: Laxman Dewangan <ldewangan@nvidia.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#ifndef _DT_BINDINGS_PINCTRL_TEGRA210_IO_PAD_H
+#define _DT_BINDINGS_PINCTRL_TEGRA210_IO_PAD_H
+
+/* Voltage levels of Tegra210 IO rails. */
+#define TEGRA210_IO_RAIL_1800000UV		0
+#define TEGRA210_IO_RAIL_3300000UV		1
+
+/* Deep power down state enable/disable for Tegra210 IO pads */
+#define TEGRA210_IO_PAD_DEEP_POWER_DOWN_DISABLE	0
+#define TEGRA210_IO_PAD_DEEP_POWER_DOWN_ENABLE	1
+
+#endif
