This is the next post in my series about upgrading my old Chumby 8’s kernel. Here are links to part 1 and part 2 if you missed them. As a quick summary, I got U-Boot working in part 1 and then got the SD card working in part 2. In this part I’ll describe the complicated process of how I got Wi-Fi working.

The Chumby 8/Insignia Infocast 8 has a built-in AzureWave AW-GH321 802.11g module. This is a pretty old module that doesn’t even support 802.11n, so it maxes out at 54 Mbps and the link is an link because it’s nowhere to be found these days. The module makes use of the Marvell 88W8686 chipset, which connects through the SDIO bus. SDIO is basically just the same as SD, except it’s for I/O devices like Wi-Fi and Bluetooth modules instead of SD cards. This wireless chipset is supported by a Linux driver called libertas.

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