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| author | Cezary Gapinski <cezary.gapinski@gmail.com> | 2018-12-25 01:00:40 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-01-07 21:26:01 +0300 |
| commit | 560b097c77ccdfa22586718e9e45f85e86ef2156 (patch) | |
| tree | a0cd3c8e1e201cdd4d9eccc267e04419e5ed5197 /Documentation/devicetree | |
| parent | 00505edf95115707d91afd2685993b98daa93f15 (diff) | |
| download | linux-560b097c77ccdfa22586718e9e45f85e86ef2156.tar.xz | |
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: Cezary Gapinski <cezary.gapinski@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/spi/spi-stm32.txt | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/Documentation/devicetree/bindings/spi/spi-stm32.txt b/Documentation/devicetree/bindings/spi/spi-stm32.txt index 1b3fa2c119d5..d82755c63eaf 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: |