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Unverified Commit 560b097c authored by Cezary Gapinski's avatar Cezary Gapinski Committed by Mark Brown
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spi: stm32: add description about STM32F4 bindings 



Add description that STM32F4 can be used in compatible property.
Master Inter-Data Idleness optional property cannot be used in STM32F4.

Signed-off-by: default avatarCezary Gapinski <cezary.gapinski@gmail.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 00505edf

Documentation/devicetree/bindings/spi/spi-stm32.txt

+6 −3
Original line number Diff line number Diff line
@@ -7,7 +7,9 @@ from 4 to 32-bit data size. Although it can be configured as master or slave, 
only master is supported by the driver.



Required properties:

- compatible: Must be "st,stm32h7-spi".

- compatible: Should be one of:

  "st,stm32h7-spi"

  "st,stm32f4-spi"

- reg: Offset and length of the device's register set.

- interrupts: Must contain the interrupt id.

- clocks: Must contain an entry for spiclk (which feeds the internal clock
@@ -30,8 +32,9 @@ Child nodes represent devices on the SPI bus 
  See ../spi/spi-bus.txt



Optional properties:

- st,spi-midi-ns: (Master Inter-Data Idleness) minimum time delay in

		  nanoseconds inserted between two consecutive data frames.

- st,spi-midi-ns: Only for STM32H7, (Master Inter-Data Idleness) minimum time

		  delay in nanoseconds inserted between two consecutive data

		  frames.





Example: