arch/arm/ixp4xx.rst

2 Release Notes for Linux on Intel's IXP4xx Network Processor
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10 Intel's IXP4xx network processor is a highly integrated SOC that
13 consumption. The IXP4xx family currently consists of several processors
16 supports faster speeds, new memory and flash configurations, and more
17 integration such as an on-chip I2C controller.
21    http://developer.intel.com/design/network/products/npfamily/ixp4xx.htm
23 Intel also made the IXCP1100 CPU for sometime which is an IXP4xx
28 Linux currently supports the following features on the IXP4xx chips:
30 - Dual serial ports
31 - PCI interface
32 - Flash access (MTD/JFFS)
33 - I2C through GPIO on IXP42x
34 - GPIO for input/output/interrupts
35   See arch/arm/mach-ixp4xx/include/mach/platform.h for access functions.
36 - Timers (watchdog, OS)
41 - USB device interface
42 - Network interfaces (HSS, Utopia, NPEs, etc)
43 - Network offload functionality
56    - http://sourceforge.net/projects/ixp4xx-osdg/
59    - http://gatewaymaker.sourceforge.net/
62    - http://ixp425.sourceforge.net/
69 The IXP4xx family allows for up to 256MB of memory but the PCI interface
76 IXP4xx provides two methods of accessing PCI memory space:
83    problematic if using video cards and other memory-heavy devices.
85 2) If > 64MB of memory space is required, the IXP4xx can be
99 Currently the code only handles level-sensitive GPIO interrupts
108    interface, one to 4-port 10/100 switch, and the third to and ADSL
111    the platform has two mini-PCI slots used for 802.11[bga] cards.
118    replaced with mini-PCI slots and a CF IDE interface hanging off
126    of flash, two 10/100 ports and one ADSL port.
131    This is basically an IXDP425 with an IXP465 and 32M of flash instead
137    added. One issue with this board is that the mini-PCI slots only
138    have the 3.3v line connected, so you can't use a PCI to mini-PCI
148    contains a CPU and 16MB of flash on the board and needs to be
154 - Add support for Coyote IDE
155 - Add support for edge-based GPIO interrupts
156 - Add support for CF IDE on expansion bus
160 The IXP4xx work has been funded by Intel Corp. and MontaVista Software, Inc.
164 - Lennerty Buytenhek
165 - Lutz Jaenicke
166 - Justin Mayfield
167 - Robert E. Ranslam
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