This isn't an exhaustive list, but you should add new prefixes to it before
using them to avoid name-space collisions.
+abilis Abilis Systems
+abcn Abracon Corporation
+active-semi Active-Semi International Inc
ad Avionic Design GmbH
+adapteva Adapteva, Inc.
+adh AD Holdings Plc.
adi Analog Devices, Inc.
aeroflexgaisler Aeroflex Gaisler AB
-ak Asahi Kasei Corp.
+al Annapurna Labs
+allwinner Allwinner Technology Co., Ltd.
+alphascale AlphaScale Integrated Circuits Systems, Inc.
+altr Altera Corp.
amcc Applied Micro Circuits Corporation (APM, formally AMCC)
+amd Advanced Micro Devices (AMD), Inc.
+amlogic Amlogic, Inc.
+ampire Ampire Co., Ltd.
+ams AMS AG
+amstaos AMS-Taos Inc.
apm Applied Micro Circuits Corporation (APM)
+aptina Aptina Imaging
+arasan Arasan Chip Systems
arm ARM Ltd.
+armadeus ARMadeus Systems SARL
+artesyn Artesyn Embedded Technologies Inc.
+asahi-kasei Asahi Kasei Corp.
atmel Atmel Corporation
+auo AU Optronics Corporation
+avago Avago Technologies
+avic Shanghai AVIC Optoelectronics Co., Ltd.
+axis Axis Communications AB
+boe BOE Technology Group Co., Ltd.
bosch Bosch Sensortec GmbH
+boundary Boundary Devices Inc.
brcm Broadcom Corporation
+buffalo Buffalo, Inc.
+calxeda Calxeda
+capella Capella Microsystems, Inc
cavium Cavium, Inc.
+cdns Cadence Design Systems Inc.
+ceva Ceva, Inc.
+chipidea Chipidea, Inc
+chipone ChipOne
+chipspark ChipSPARK
chrp Common Hardware Reference Platform
+chunghwa Chunghwa Picture Tubes Ltd.
+ciaa Computadora Industrial Abierta Argentina
cirrus Cirrus Logic, Inc.
+cloudengines Cloud Engines, Inc.
+cnm Chips&Media, Inc.
+cnxt Conexant Systems, Inc.
+compulab CompuLab Ltd.
cortina Cortina Systems, Inc.
+cosmic Cosmic Circuits
+crystalfontz Crystalfontz America, Inc.
+cubietech Cubietech, Ltd.
+cypress Cypress Semiconductor Corporation
dallas Maxim Integrated Products (formerly Dallas Semiconductor)
+davicom DAVICOM Semiconductor, Inc.
+delta Delta Electronics, Inc.
denx Denx Software Engineering
+digi Digi International Inc.
+digilent Diglent, Inc.
+dlg Dialog Semiconductor
+dlink D-Link Corporation
+dmo Data Modul AG
+ea Embedded Artists AB
+ebv EBV Elektronik
+edt Emerging Display Technologies
+elan Elan Microelectronic Corp.
emmicro EM Microelectronic
+energymicro Silicon Laboratories (formerly Energy Micro AS)
+epcos EPCOS AG
+epfl Ecole Polytechnique Fédérale de Lausanne
epson Seiko Epson Corp.
est ESTeem Wireless Modems
+ettus NI Ettus Research
+eukrea Eukréa Electromatique
+everest Everest Semiconductor Co. Ltd.
+everspin Everspin Technologies, Inc.
+excito Excito
+fcs Fairchild Semiconductor
+firefly Firefly
+focaltech FocalTech Systems Co.,Ltd
fsl Freescale Semiconductor
GEFanuc GE Fanuc Intelligent Platforms Embedded Systems, Inc.
gef GE Fanuc Intelligent Platforms Embedded Systems, Inc.
+geniatech Geniatech, Inc.
+giantplus Giantplus Technology Co., Ltd.
+globalscale Globalscale Technologies, Inc.
+gmt Global Mixed-mode Technology, Inc.
+goodix Shenzhen Huiding Technology Co., Ltd.
+google Google, Inc.
+grinn Grinn
+gumstix Gumstix, Inc.
+gw Gateworks Corporation
+hannstar HannStar Display Corporation
+haoyu Haoyu Microelectronic Co. Ltd.
+hardkernel Hardkernel Co., Ltd
+himax Himax Technologies, Inc.
+hisilicon Hisilicon Limited.
+hit Hitachi Ltd.
+hitex Hitex Development Tools
+holt Holt Integrated Circuits, Inc.
+honeywell Honeywell
hp Hewlett Packard
+i2se I2SE GmbH
ibm International Business Machines (IBM)
idt Integrated Device Technologies, Inc.
+iom Iomega Corporation
img Imagination Technologies Ltd.
+ingenic Ingenic Semiconductor
+innolux Innolux Corporation
+intel Intel Corporation
intercontrol Inter Control Group
+invensense InvenSense Inc.
+isee ISEE 2007 S.L.
+isil Intersil
+jedec JEDEC Solid State Technology Association
+karo Ka-Ro electronics GmbH
+keymile Keymile GmbH
+kinetic Kinetic Technologies
+lacie LaCie
+lantiq Lantiq Semiconductor
+lenovo Lenovo Group Ltd.
+lg LG Corporation
linux Linux-specific binding
+lsi LSI Corp. (LSI Logic)
+lltc Linear Technology Corporation
marvell Marvell Technology Group Ltd.
maxim Maxim Integrated Products
+mediatek MediaTek Inc.
+melexis Melexis N.V.
+merrii Merrii Technology Co., Ltd.
+micrel Micrel Inc.
+microchip Microchip Technology Inc.
+micron Micron Technology Inc.
+minix MINIX Technology Ltd.
+mitsubishi Mitsubishi Electric Corporation
mosaixtech Mosaix Technologies, Inc.
+moxa Moxa
+mpl MPL AG
+msi Micro-Star International Co. Ltd.
+mti Imagination Technologies Ltd. (formerly MIPS Technologies Inc.)
+mundoreader Mundo Reader S.L.
+murata Murata Manufacturing Co., Ltd.
+mxicy Macronix International Co., Ltd.
national National Semiconductor
+nec NEC LCD Technologies, Ltd.
+neonode Neonode Inc.
+netgear NETGEAR
+netlogic Broadcom Corporation (formerly NetLogic Microsystems)
+netxeon Shenzhen Netxeon Technology CO., LTD
+newhaven Newhaven Display International
nintendo Nintendo
+nokia Nokia
+nuvoton Nuvoton Technology Corporation
nvidia NVIDIA
nxp NXP Semiconductors
+okaya Okaya Electric America, Inc.
onnn ON Semiconductor Corp.
+opencores OpenCores.org
+option Option NV
+ortustech Ortus Technology Co., Ltd.
+ovti OmniVision Technologies
+panasonic Panasonic Corporation
+parade Parade Technologies Inc.
+pericom Pericom Technology Inc.
+phytec PHYTEC Messtechnik GmbH
picochip Picochip Ltd
+plathome Plat'Home Co., Ltd.
+plda PLDA
+pixcir PIXCIR MICROELECTRONICS Co., Ltd
+pulsedlight PulsedLight, Inc
powervr PowerVR (deprecated, use img)
-qcom Qualcomm, Inc.
+qca Qualcomm Atheros, Inc.
+qcom Qualcomm Technologies, Inc
+qemu QEMU, a generic and open source machine emulator and virtualizer
+qi Qi Hardware
+qnap QNAP Systems, Inc.
+radxa Radxa
+raidsonic RaidSonic Technology GmbH
ralink Mediatek/Ralink Technology Corp.
ramtron Ramtron International
+raspberrypi Raspberry Pi Foundation
realtek Realtek Semiconductor Corp.
renesas Renesas Electronics Corporation
+richtek Richtek Technology Corporation
+ricoh Ricoh Co. Ltd.
+rockchip Fuzhou Rockchip Electronics Co., Ltd
samsung Samsung Semiconductor
+sandisk Sandisk Corporation
sbs Smart Battery System
schindler Schindler
+seagate Seagate Technology PLC
+semtech Semtech Corporation
+sgx SGX Sensortech
+sharp Sharp Corporation
+sigma Sigma Designs, Inc.
sil Silicon Image
silabs Silicon Laboratories
+siliconmitus Silicon Mitus, Inc.
simtek
+sii Seiko Instruments, Inc.
+silergy Silergy Corp.
sirf SiRF Technology, Inc.
-snps Synopsys, Inc.
+sitronix Sitronix Technology Corporation
+skyworks Skyworks Solutions, Inc.
+smsc Standard Microsystems Corporation
+snps Synopsys, Inc.
+socionext Socionext Inc.
+solidrun SolidRun
+solomon Solomon Systech Limited
+sony Sony Corporation
+spansion Spansion Inc.
+sprd Spreadtrum Communications Inc.
st STMicroelectronics
ste ST-Ericsson
stericsson ST-Ericsson
+synology Synology, Inc.
+tbs TBS Technologies
+tcl Toby Churchill Ltd.
+thine THine Electronics, Inc.
ti Texas Instruments
+tlm Trusted Logic Mobility
+toradex Toradex AG
toshiba Toshiba Corporation
+toumaz Toumaz
+tplink TP-LINK Technologies Co., Ltd.
+tronfy Tronfy
+truly Truly Semiconductors Limited
+upisemi uPI Semiconductor Corp.
+usi Universal Scientific Industrial Co., Ltd.
+v3 V3 Semiconductor
+variscite Variscite Ltd.
via VIA Technologies, Inc.
+virtio Virtual I/O Device Specification, developed by the OASIS consortium
+voipac Voipac Technologies s.r.o.
+wexler Wexler
+winbond Winbond Electronics corp.
wlf Wolfson Microelectronics
wm Wondermedia Technologies, Inc.
-winbond Winbond Electronics corp.
+x-powers X-Powers
+xes Extreme Engineering Solutions (X-ES)
+xillybus Xillybus Ltd.
xlnx Xilinx
+zyxel ZyXEL Communications Corp.
+zarlink Zarlink Semiconductor
+zii Zodiac Inflight Innovations
+zte ZTE Corp.