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dt-bindings: serial: stm32: add wakeup option 

Add a note for enabling wakeup capabilities of usart

Signed-off-by: Bich Hemon <bich.hemon@st.com>
Signed-off-by: Erwan Le Ray <erwan.leray@st.com>
Reviewed-by: Rob Herring <robh@kernel.org>

Link: https://lore.kernel.org/r/1560433800-12255-2-git-send-email-erwan.leray@st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Erwan Le Ray 2019-06-13 15:49:51 +02:00 committed by Greg Kroah-Hartman
parent ea5ab2e422
commit 96b79ac705
1 changed files with 5 additions and 0 deletions
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Documentation/devicetree/bindings/serial/st,stm32-usart.txt
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@ -20,6 +20,11 @@ Optional properties:
linux,rs485-enabled-at-boot-time: see rs485.txt.
- dmas: phandle(s) to DMA controller node(s). Refer to stm32-dma.txt
- dma-names: "rx" and/or "tx"
- wakeup-source: bool flag to indicate this device has wakeup capabilities
- interrupt-names, if optional wake-up interrupt is used, should be:
- "event": the name for the interrupt line of the USART instance
- "wakeup" the name for the optional wake-up interrupt
Examples:
usart4: serial@40004c00 {