Lines Matching +full:spi +full:- +full:based

31 .Nd SPI generic I/O device driver
36 .Bd -ragged -offset indent
37 .Cd "device spi"
45 .Bd -literal -offset indent
51 driver provides direct access to a slave device on the SPI bus.
54 device is associated with a single chip-select
56 with that chip-select line asserted.
58 SPI data transfers are inherently bi-directional; there are no separate
71 driver provides access to the SPI slave device with the following
75 .Bl -tag -width indent
83 .Bd -literal
91 The buffers for the transfer are a previously-mmap'd region.
100 is non-zero, the data appears in the memory region immediately
104 .Bd -literal
119 of the SPI bus controller device.
121 Get the SPI mode (clock polarity and phase) to be used
124 Set the SPI mode (clock polarity and phase) to be used
132 based system, such as
136 .Bl -tag -width indent
143 Actual bus speed may be lower, depending on the capabilities of the SPI
146 The chip-select number to assert when performing I/O for this device.
149 The SPI mode (0-3) to use when communicating with this device.
154 based system, the spigen device is defined as a slave device subnode
155 of the SPI bus controller node.
161 The most commonly-used ones are documented below.
166 .Bl -tag -width indent
171 .It Va spi-max-frequency
173 Actual bus speed may be lower, depending on the capabilities of the SPI
180 .Bl -tag -width indent
181 .It Va spi-cpha
184 .It Va spi-cpol
187 .It Va spi-cs-high
191 .Bl -tag -width -compact
197 .Xr spi 8