Documentation/spi/pxa2xx.rst

7 (see Documentation/spi/spi-summary.rst). The driver has the following features
9 - Support for any PXA2xx and compatible SSP.
10 - SSP PIO and SSP DMA data transfers.
11 - External and Internal (SSPFRM) chip selects.
12 - Per slave device (chip) configuration.
13 - Full suspend, freeze, resume support.
18 the DMA or interrupt driven transfers.
21 -----------------------------------
23 arch/.../mach-*/board-*.c as a "platform device". The master configuration
44 ------------------
66 	.name = "pxa2xx-spi", /* MUST BE THIS VALUE, so device match driver */
85 -----------------------
87 arch/.../mach-*/board-*.c using the "spi_board_info" structure found in
88 "linux/spi/spi.h". See "Documentation/spi/spi-summary.rst" for additional
107 used to configure the SSP hardware FIFO. These fields are critical to the
119 to determine the correct value. An SSP configured for byte-wide transfers would
127 timeouts and must busy-wait any trailing bytes.
136 -----------------
144 	.tx_threshold = 8, /* SSP hardware FIFO threshold */
145 	.rx_threshold = 8, /* SSP hardware FIFO threshold */
151 	.tx_threshold = 8, /* SSP hardware FIFO threshold */
152 	.rx_threshold = 8, /* SSP hardware FIFO threshold */
185 -----------------------
186 The pxa2xx_spi driver supports both DMA and interrupt driven PIO message
213 ---------