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+		TI Keystone Linux Overview
+		--------------------------
+
+Introduction
+------------
+Keystone range of SoCs are based on ARM Cortex-A15 MPCore Processors
+and c66x DSP cores. This document describes essential information required
+for users to run Linux on Keystone based EVMs from Texas Instruments.
+
+Following SoCs  & EVMs are currently supported:-
+
+------------ K2HK SoC and EVM --------------------------------------------------
+
+a.k.a Keystone 2 Hawking/Kepler SoC
+TCI6636K2H & TCI6636K2K: See documentation at
+	http://www.ti.com/product/tci6638k2k
+	http://www.ti.com/product/tci6638k2h
+
+EVM:
+http://www.advantech.com/Support/TI-EVM/EVMK2HX_sd.aspx
+
+------------ K2E SoC and EVM ---------------------------------------------------
+
+a.k.a Keystone 2 Edison SoC
+K2E  -  66AK2E05: See documentation at
+	http://www.ti.com/product/66AK2E05/technicaldocuments
+
+EVM:
+https://www.einfochips.com/index.php/partnerships/texas-instruments/k2e-evm.html
+
+------------ K2L SoC and EVM ---------------------------------------------------
+
+a.k.a Keystone 2 Lamarr SoC
+K2L  -  TCI6630K2L: See documentation at
+	http://www.ti.com/product/TCI6630K2L/technicaldocuments
+EVM:
+https://www.einfochips.com/index.php/partnerships/texas-instruments/k2l-evm.html
+
+Configuration
+-------------
+
+All of the K2 SoCs/EVMs share a common defconfig, keystone_defconfig and same
+image is used to boot on individual EVMs. The platform configuration is
+specified through DTS. Following are the DTS used:-
+	K2HK EVM : k2hk-evm.dts
+	K2E EVM  : k2e-evm.dts
+	K2L EVM  : k2l-evm.dts
+
+The device tree documentation for the keystone machines are located at
+        Documentation/devicetree/bindings/arm/keystone/keystone.txt
+
+Known issues & workaround
+-------------------------
+
+Some of the device drivers used on keystone are re-used from that from
+DaVinci and other TI SoCs. These device drivers may use clock APIs directly.
+Some of the keystone specific drivers such as netcp uses run time power
+management API instead to enable clock. As this API has limitations on
+keystone, following workaround is needed to boot Linux.
+
+   Add 'clk_ignore_unused' to the bootargs env variable in u-boot. Otherwise
+   clock frameworks will try to disable clocks that are unused and disable
+   the hardware. This is because netcp related power domain and clock
+   domains are enabled in u-boot as run time power management API currently
+   doesn't enable clocks for netcp due to a limitation. This workaround is
+   expected to be removed in the future when proper API support becomes
+   available. Until then, this work around is needed.
+
+
+Document Author
+---------------
+Murali Karicheri <m-karicheri2@ti.com>
+Copyright 2015 Texas Instruments