diff --git a/Documentation/acronyms.txt b/Documentation/acronyms.txt
index 5eb6ee2f31..00321607ba 100755
--- a/Documentation/acronyms.txt
+++ b/Documentation/acronyms.txt
@@ -8,15 +8,22 @@ CP15   Coprocessor 15 (ARM)
 DEVIF  Device Interface (networking)
 DAC    Digital to Analog Conversion
 DEV    Device
+DMA    Direct Memory Access (hardware)
+DMAC   DMA Controller (hardware)
 DRAM   Dynamic RAM
-FAT    File Allocation Table
-FTL    FLASH Translation Layer
+FAT    File Allocation Table (file systems)
+FTL    FLASH Translation Layer (MTD)
+HSMCI  High Speed Memory Card Interface (Atmel)
+I/O    Input/Output
+IP     Internet Protocol (version 4?) (networking)
+IPv6   Internet Protocol Version 6 (networking)
 IRQ    Interrupt Request
 I2C    Inter-Integrated Circuit
 I2S    Inter IC Sound
 ICMP   Internet Control Message Protocol (networking)
 IOB    I/O Buffer (networking)
 LIBC   The "C" Library
+MCI    Memory Card Interface
 MM     Memory Management/Manager
 MMAP   Memory Map
 MMC    Multi-Media Card
@@ -32,8 +39,12 @@ PID    Peripheral ID (Atmel SAM)
 PWM    Pulse Width Modulation
 PKT    "Raw" Packet socket (networking)
 RAM    Random Access Memory
+RTC    Real Time Clock
+RTCC   Real Time Clock/Calendar
 SAIC   Secure Advanced Interrupt Controller (Atmel SAM)
 SD     Secure Digital
+SDIO   Secure Digital I/O
+SMC    Static Memory Controller (hardware)
 SPI    Serial Periperhal Interface
 TCP    Transmission Control Protocol (networking)
 TSC    Touchscreen Controller
@@ -43,5 +54,4 @@ UART   Universal Asynchronous Receiver/Transmitter
 USB    Universal Serial Bus
 USART  Universal Synchronous/Asynchronous Receiver/Transmitter
 WDT    Watchdog Timer
-
-
+XDMAC  Extended DMA Controller (Atmel)