From 31eab8425110b933dd7c818809cb4ffa3b2c6d82 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Fri, 23 Jan 2026 14:37:25 -0600 Subject: [PATCH] spi: dt-bindings: add spi-{tx,rx}-lane-map properties 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) Reviewed-by: Jonathan Cameron Signed-off-by: David Lechner Link: https://patch.msgid.link/20260123-spi-add-multi-bus-support-v6-2-12af183c06eb@baylibre.com Signed-off-by: Mark Brown --- .../bindings/spi/spi-peripheral-props.yaml | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml index 59ddead7da14..880a9f624566 100644 --- a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml +++ b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml @@ -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. -- 2.47.3