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spi: dt-bindings: nxp,lpc3220-spi: Add DMA specific properties

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NXP LPC32xx SPI controllers supports DMA operations over rx-tx channel,
which is muxed with SSP SPI controller DMA.

For additional reference see Table 69 in NXP LPC32xx User Manual.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Link: https://patch.msgid.link/20260109075032.3287109-1-vz@mleia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vladimir Zapolskiy 2026-01-09 09:50:32 +02:00 committed by Mark Brown
parent b6376dbed8
commit 8672e4b51a
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1 changed files with 8 additions and 0 deletions
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8
Documentation/devicetree/bindings/spi/nxp,lpc3220-spi.yaml
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@ -20,6 +20,12 @@ properties:
clocks:
maxItems: 1
dmas:
maxItems: 1
dma-names:
const: rx-tx
allOf:
- $ref: spi-controller.yaml#
@ -38,6 +44,8 @@ examples:
compatible = "nxp,lpc3220-spi";
reg = <0x20088000 0x1000>;
clocks = <&clk LPC32XX_CLK_SPI1>;
dmas = <&dmamux 11 1 0>;
dma-names = "rx-tx";
#address-cells = <1>;
#size-cells = <0>;
};