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dt-bindings: net: dsa: qca8k: Document qca,led-open-drain binding

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Document new binding qca,ignore-power-on-sel used to ignore
power on strapping and use sw regs instead.
Document qca,led-open.drain to set led to open drain mode, the
qca,ignore-power-on-sel is mandatory with this enabled or an error will
be reported.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ansuel Smith
2021-10-14 00:39:14 +02:00
committed by David S. Miller
parent bbc4799e8b
commit 924087c5c3
1 changed files with 11 additions and 0 deletions
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11
Documentation/devicetree/bindings/net/dsa/qca8k.txt
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@@ -13,6 +13,17 @@ Required properties:
Optional properties:
- reset-gpios: GPIO to be used to reset the whole device
- qca,ignore-power-on-sel: Ignore power on pin strapping to configure led open
drain or eeprom presence. This is needed for broken
devices that have wrong configuration or when the oem
decided to not use pin strapping and fallback to sw
regs.
- qca,led-open-drain: Set leds to open-drain mode. This requires the
qca,ignore-power-on-sel to be set or the driver will fail
to probe. This is needed if the oem doesn't use pin
strapping to set this mode and prefers to set it using sw
regs. The pin strapping related to led open drain mode is
the pin B68 for QCA832x and B49 for QCA833x
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