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Subject[PATCH v2 14/14] spi: stm32: add description about STM32F4 bindings
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From: Cezary Gapinski <cezary.gapinski@gmail.com>

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

Signed-off-by: Cezary Gapinski <cezary.gapinski@gmail.com>
---
Documentation/devicetree/bindings/spi/spi-stm32.txt | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/spi/spi-stm32.txt b/Documentation/devicetree/bindings/spi/spi-stm32.txt
index 1b3fa2c1..d82755c 100644
--- a/Documentation/devicetree/bindings/spi/spi-stm32.txt
+++ b/Documentation/devicetree/bindings/spi/spi-stm32.txt
@@ -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:
--
2.7.4
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