Chapter 40
AR6003 WiFi
40.1 Hardware Operation
The officially supported WiFi chip with FSL BSP is AR6003 from Atheros.
The Atheros AR6003 is a single chip, small form factor IEEE 802.11 a/b/g/n MAC/
baseband/ radio optimized for low-power mobile applications.
40.1.1 Software Operation
FSL BSP uses the open source ath6kl driver from kernel 3.0.35 for AR6003.
40.1.2 Driver features
AR6003 is a single stream, SDIO based 802.11 chipset from Atheros optimized for
mobile and embedded devices. ath6kl is a cfg80211 driver for AR6003 and supports both
the station and AP mode of operation.
Station mode supports 802.11 a/b/g/n with HT20 on 2.4/5GHz and HT40 only on 5GHz.
Some of the other features include WPA/WPA2,WPS, WMM, WMM-PS, and BT
coexistence. AP mode can be operated only in b/g mode with support for a subset of
features mentioned above.
The driver supports cfg80211 but comes with its own set of wext ioctls which have
historically supported some of our customers with features like BT 3.0 and AP mode of
operation.
For further details, refer to
http://wireless.kernel.org/en/users/Drivers/ath6kl
The driver requires firmware that runs on the chip's network processor. The majority of it
is stored in ROM. The binaries that are downloaded and executed from RAM are as
follows:
i.MX 6Solo/6DualLite Linux Reference Manual, Rev. L3.0.35_4.1.0, 09/2013
Freescale Semiconductor, Inc.
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