Lines Matching +full:spi +full:- +full:clock +full:- +full:mode +full:- +full:cpha

1 # Copyright (c) 2018, I-SENSE group of ICCS
2 # SPDX-License-Identifier: Apache-2.0
4 # Common fields for SPI devices
8 on-bus: spi
13   spi-max-frequency:
16     description: Maximum clock frequency of device's SPI interface in Hz
21       Duplex mode, full or half. By default it's always full duplex thus 0
22       as this is, by far, the most common mode.
24       list (see dt-bindings/spi/spi.h)
28       - 0
29       - 2048
30   frame-format:
37       list (see dt-bindings/spi/spi.h)
41       - 0
42       - 32768
43   spi-cpol:
46       SPI clock polarity which indicates the clock idle state.
47       If it is used, the clock idle state is logic high; otherwise, low.
48   spi-cpha:
51       SPI clock phase that indicates on which edge data is sampled.
53   spi-hold-cs:
56       In some cases, it is necessary for the master to manage SPI chip select
57       under software control, so that multiple spi transactions can be performed
58       without releasing it. A typical use case is variable length SPI packets
59       where the first spi transaction reads the length and the second spi transaction