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spi: dt-bindings: add spi-{tx,rx}-lane-map properties

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Add spi-tx-lane-map and spi-rx-lane-map properties to the SPI peripheral
device tree binding. These properties allow specifying the mapping of
peripheral data lanes to controller data lanes. This is needed e.g. when
some lanes are skipped on the controller side so that the controller
can correctly route data to/from the peripheral.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20260123-spi-add-multi-bus-support-v6-2-12af183c06eb@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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David Lechner 2026-01-23 14:37:25 -06:00 committed by Mark Brown
parent 37bb4033e4
commit 31eab84251
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1 changed files with 14 additions and 0 deletions
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14
Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml
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@ -75,6 +75,13 @@ properties:
enum: [0, 1, 2, 4, 8]
default: [1]
spi-rx-lane-map:
description: Mapping of peripheral SDO lanes to controller SDI lanes.
Each index in the array represents a peripheral SDO lane, and the value
at that index represents the corresponding controller SDI lane.
$ref: /schemas/types.yaml#/definitions/uint32-array
default: [0, 1, 2, 3, 4, 5, 6, 7]
spi-rx-delay-us:
description:
Delay, in microseconds, after a read transfer.
@ -99,6 +106,13 @@ properties:
enum: [0, 1, 2, 4, 8]
default: [1]
spi-tx-lane-map:
description: Mapping of peripheral SDI lanes to controller SDO lanes.
Each index in the array represents a peripheral SDI lane, and the value
at that index represents the corresponding controller SDO lane.
$ref: /schemas/types.yaml#/definitions/uint32-array
default: [0, 1, 2, 3, 4, 5, 6, 7]
spi-tx-delay-us:
description:
Delay, in microseconds, after a write transfer.