bindings/spi/spi-peripheral-props.yaml

1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/spi/spi-peripheral-props.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Peripheral-specific properties for a SPI bus.
10   Many SPI controllers need to add properties to peripheral devices. They could
11   be common properties like spi-max-frequency, spi-cpha, etc. or they could be
13   need to be defined in the peripheral node because they are per-peripheral and
14   there can be multiple peripherals attached to a controller. All those
19   - Mark Brown <broonie@kernel.org>
27         - minimum: 0
32   spi-cs-high:
37   spi-lsb-first:
42   spi-max-frequency:
47   spi-cs-setup-delay-ns:
49       Delay in nanoseconds to be introduced by the controller after CS is
52   spi-cs-hold-delay-ns:
54       Delay in nanoseconds to be introduced by the controller before CS is
55       de-asserted.
57   spi-cs-inactive-delay-ns:
59       Delay in nanoseconds to be introduced by the controller after CS is
60       de-asserted.
62   spi-rx-bus-width:
64       Bus width to the SPI bus used for read transfers.
70   spi-rx-delay-us:
74   rx-sample-delay-ns:
79   spi-tx-bus-width:
81       Bus width to the SPI bus used for write transfers.
87   spi-tx-delay-us:
91   stacked-memories:
97       to repeat the commands when crossing a chip boundary. The size of
99     $ref: /schemas/types.yaml#/definitions/uint64-array
103   parallel-memories:
107       different memories (eg. even bits are stored in one memory, odd
112     $ref: /schemas/types.yaml#/definitions/uint64-array
118   - $ref: cdns,qspi-nor-peripheral-props.yaml#
119   - $ref: samsung,spi-peripheral-props.yaml#
120   - $ref: nvidia,tegra210-quad-peripheral-props.yaml#