4 - AVR Butterfly SPI driver overview and pin configuration.
6 - Basic EP93xx SPI driver configuration.
8 - PXA2xx SPI master controller build by spi_message fifo wq
10 - Intro to the userspace API for spi devices
12 - Connecting an LM70-LLP sensor to the kernel via the SPI subsys.
14 - NXP SC18IS602/603 I2C-bus to SPI bridge
16 - (Linux) SPI overview. If unsure about SPI or SPI in Linux, start here.