| Message ID | 20230511231317.158214-2-bstruempfel@ultratronik.de |
|---|---|
| State | New |
| Headers | show |
| Series | spi: Add option to keep the MOSI line low, when it is idle | expand |
diff --git a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml index 782a014b63a76..46d5acc1fc232 100644 --- a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml +++ b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml @@ -34,6 +34,12 @@ properties: description: The device requires the chip select active high. + spi-mosi-idle-low: + $ref: /schemas/types.yaml#/definitions/flag + description: + The device requires the mosi line to be low when idle and the + chip select is asserted. + spi-lsb-first: $ref: /schemas/types.yaml#/definitions/flag description:
Some spi controller switch the mosi line to high, whenever they are idle. This may not be desired in all use cases. For example neopixel leds can get confused and flicker due to misinterpreting the idle state. Therefore, we introduce a new spi-mode bit, with which the idle behaviour can be overwritten on a per device basis. Signed-off-by: Boerge Struempfel <bstruempfel@ultratronik.de> --- .../devicetree/bindings/spi/spi-peripheral-props.yaml | 6 ++++++ 1 file changed, 6 insertions(+)