Added missing tegra files.HEADmaster

2 files changed, 238 insertions, 0 deletions

diff --git a/Documentation/arm/IXP2000 b/Documentation/arm/IXP2000
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+
+-------------------------------------------------------------------------
+Release Notes for Linux on Intel's IXP2000 Network Processor
+
+Maintained by Deepak Saxena <dsaxena@plexity.net>
+-------------------------------------------------------------------------
+
+1. Overview
+
+Intel's IXP2000 family of NPUs (IXP2400, IXP2800, IXP2850) is designed
+for high-performance network applications such high-availability
+telecom systems. In addition to an XScale core, it contains up to 8
+"MicroEngines" that run special code, several high-end networking 
+interfaces (UTOPIA, SPI, etc), a PCI host bridge, one serial port,
+flash interface, and some other odds and ends. For more information, see:
+
+http://developer.intel.com
+
+2. Linux Support
+
+Linux currently supports the following features on the IXP2000 NPUs:
+
+- On-chip serial
+- PCI
+- Flash (MTD/JFFS2)
+- I2C through GPIO
+- Timers (watchdog, OS)
+
+That is about all we can support under Linux ATM b/c the core networking
+components of the chip are accessed via Intel's closed source SDK. 
+Please contact Intel directly on issues with using those. There is
+also a mailing list run by some folks at Princeton University that might
+be of help:  https://lists.cs.princeton.edu/mailman/listinfo/ixp2xxx
+
+WHATEVER YOU DO, DO NOT POST EMAIL TO THE LINUX-ARM OR LINUX-ARM-KERNEL
+MAILING LISTS REGARDING THE INTEL SDK.
+
+3. Supported Platforms
+
+- Intel IXDP2400 Reference Platform
+- Intel IXDP2800 Reference Platform
+- Intel IXDP2401 Reference Platform
+- Intel IXDP2801 Reference Platform
+- RadiSys ENP-2611
+
+4. Usage Notes
+
+- The IXP2000 platforms usually have rather complex PCI bus topologies
+  with large memory space requirements. In addition, b/c of the way the
+  Intel SDK is designed, devices are enumerated in a very specific
+  way. B/c of this this, we use "pci=firmware" option in the kernel
+  command line so that we do not re-enumerate the bus.
+
+- IXDP2x01 systems have variable clock tick rates that we cannot determine 
+  via HW registers. The "ixdp2x01_clk=XXX" cmd line options allow you
+  to pass the clock rate to the board port.
+
+5. Thanks
+
+The IXP2000 work has been funded by Intel Corp. and MontaVista Software, Inc.
+
+The following people have contributed patches/comments/etc:
+
+Naeem F. Afzal
+Lennert Buytenhek
+Jeffrey Daly
+
+-------------------------------------------------------------------------
+Last Update: 8/09/2004
diff --git a/Documentation/arm/nvidia/tegra_parameters.txt b/Documentation/arm/nvidia/tegra_parameters.txt
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+This file documents NVIDIA Tegra specific sysfs and debugfs files and
+kernel module parameters.
+
+/sys/power/suspend/mode
+-----------------------
+
+Used to select the LP1 or LP0 power state during system suspend.
+# echo lp0 > /sys/kernel/debug/suspend_mode
+# echo lp1 > /sys/kernel/debug/suspend_mode
+
+/sys/module/cpuidle/parameters/lp2_in_idle
+------------------------------------------
+
+Used to enable/disable LP2 in idle.
+# echo 1 > /sys/module/cpuidle/parameters/lp2_in_idle
+# echo 0 > /sys/module/cpuidle/parameters/lp2_in_idle
+
+/sys/kernel/debug/cpuidle/lp2
+-----------------------------
+
+Contains LP2 statistics.
+# cat /sys/kernel/debug/cpuidle/lp2
+
+/sys/kernel/debug/powergate
+---------------------------
+
+Contains power gating state of different tegra blocks.
+
+# cat /sys/kernel/debug/powergate
+
+/sys/module/cpu_tegra3/parameters/auto_hotplug
+----------------------------------------------
+
+Used to control auto hotplug governor
+# echo 0 >/sys/module/cpu_tegra3/parameters/auto_hotplug
+# echo 1 >/sys/module/cpu_tegra3/parameters/auto_hotplug
+# cat /sys/module/cpu_tegra3/parameters/auto_hotplug
+0: disabled
+1: idle
+2: down
+3: up
+
+/sys/module/cpu_tegra3/parameters/no_lp
+---------------------------------------
+
+Used to enable/disable shadow cluster.
+# echo 0 >/sys/module/cpu_tegra3/parameters/no_lp
+# echo 1 >/sys/module/cpu_tegra3/parameters/no_lp
+
+/sys/module/cpu_tegra3/parameters/idle_bottom_freq
+--------------------------------------------------
+
+Shadow cluster maximum frequency.
+
+/sys/module/cpu_tegra3/parameters/idle_top_freq
+-----------------------------------------------
+
+Main cluster minimum frequency.
+
+/sys/module/cpu_tegra3/parameters/down_delay
+---------------------------------------------
+
+Auto hotplug delay (in jiffies) for reducing cores.
+
+/sys/module/cpu_tegra3/parameters/up2g0_delay
+---------------------------------------------
+
+Delay (in jiffies) for swithing to main cluster.
+
+/sys/module/cpu_tegra3/parameters/up2gn_delay
+---------------------------------------------
+
+Delay (in jiffies) for bringing additional cores online in main
+cluster.
+
+/sys/module/cpu_tegra3/parameters/balance_level
+-----------------------------------------------
+
+Percentage of max speed considered to be in balance. Half of balanced
+speed is considered skewed. Speed balance states:
+* balanced: freq targets for all CPUs are above 50% of highest speed
+* biased: freq target for at least one CPU is below 50% threshold
+* skewed: freq targets for at least 2 CPUs are below 25% threshold
+Speed balance state and hotplug state dictates auto hotlug behavior.
+
+/sys/module/cpu_tegra3/parameters/mp_overhead
+---------------------------------------------
+
+Multi-core overhead percentage for EDP limit calculation.
+
+/sys/kernel/debug/tegra_hotplug/stats
+-------------------------------------
+
+Contains hotplug statistics.
+
+/sys/kernel/cluster/active
+--------------------------
+
+Controls active CPU cluster: main (G) or shadow (LP).
+For manual control disable auto hotlug, enable immediate switch and
+possibly force switch to happen always:
+# echo 0 > /sys/module/cpu_tegra3/parameters/auto_hotplug
+# echo 1 > /sys/kernel/cluster/immediate
+# echo 1 > /sys/kernel/cluster/force
+
+Cluster switching can happen only when only core 0 is online.
+
+Active cluster can be set or toggled:
+# echo "G" > /sys/kernel/cluster/active
+# echo "LP" > /sys/kernel/cluster/active
+# echo "toggle" > /sys/kernel/cluster/active
+
+/sys/module/tegra3_clocks/parameters/detach_shared_bus
+------------------------------------------------------
+
+Enable/disable shared bus clock update.
+
+/sys/module/tegra3_emc/parameters/emc_enable
+--------------------------------------------
+
+Enable/disable EMC DFS.
+
+/sys/kernel/debug/tegra_emc/stats
+---------------------------------
+
+Contains EMC clock statistics.
+
+/sys/module/tegra3_dvfs/parameters/disable_cpu
+----------------------------------------------
+
+Enable/disable DVFS for CPU domain.
+
+/sys/module/tegra3_dvfs/parameters/disable_core
+-----------------------------------------------
+
+Enable/disable DVFS for CORE domain.
+
+/sys/kernel/debug/clock/emc/rate
+--------------------------------
+
+Get/set EMC clock rate.
+
+/sys/kernel/debug/clock/<module>/rate
+-------------------------------------
+
+/sys/kernel/debug/clock/<module>/parent
+---------------------------------------
+
+/sys/kernel/debug/clock/<module>/state
+--------------------------------------
+
+/sys/kernel/debug/clock/<module>/time_on
+----------------------------------------
+
+/sys/kernel/debug/clock/clock_tree
+----------------------------------
+
+Shows the state of the clock tree.
+
+/sys/kernel/debug/clock/dvfs
+----------------------------
+
+Contains voltage state.
+
+/sys/kernel/debug/tegra_actmon/avp/state
+----------------------------------------
+
+/sys/kernel/debug/clock/mon.avp/rate
+------------------------------------