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dt-bindings: serial: 8250: Add aspeed,sirq-polarity-sense. 

Add documentation for 8250_aspeed_vuart's aspeed,sirq-polarity-sense
property that enables to auto-configure the VUART's SIRQ polarity.

Signed-off-by: Oskar Senft <osk@google.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20190905144130.220713-2-osk@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oskar Senft 2019-09-05 10:41:29 -04:00 committed by Greg Kroah-Hartman
parent 8d310c9107
commit 6270d22d39
1 changed files with 5 additions and 0 deletions
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5
Documentation/devicetree/bindings/serial/8250.txt
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@ -56,6 +56,11 @@ Optional properties:
- {rts,cts,dtr,dsr,rng,dcd}-gpios: specify a GPIO for RTS/CTS/DTR/DSR/RI/DCD
line respectively. It will use specified GPIO instead of the peripheral
function pin for the UART feature. If unsure, don't specify this property.
- aspeed,sirq-polarity-sense: Only applicable to aspeed,ast2500-vuart.
phandle to aspeed,ast2500-scu compatible syscon alongside register offset
and bit number to identify how the SIRQ polarity should be configured.
One possible data source is the LPC/eSPI mode bit.
Example: aspeed,sirq-polarity-sense = <&syscon 0x70 25>
Note:
* fsl,ns16550: