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dt-bindings: Document brcm, int-fwd-mask property for bcm7038-l1-intc

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Indicate that the brcm,int-fwd-mask property is optional and can be set
on platforms which require to leave specific interrupts unmanaged by
Linux and need to retain the firmware configuration.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20191024201415.23454-5-f.fainelli@gmail.com
This commit is contained in:
Florian Fainelli 2019-10-24 13:14:14 -07:00 • committed by Marc Zyngier
parent 27eebb6035
commit e14b5e5ff0
1 changed files with 6 additions and 0 deletions
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6
Documentation/devicetree/bindings/interrupt-controller/brcm,bcm7038-l1-intc.txt
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@ -36,6 +36,12 @@ Optional properties:
- brcm,irq-can-wake: If present, this means the L1 controller can be used as a
wakeup source for system suspend/resume.
Optional properties:
- brcm,int-fwd-mask: if present, a bit mask to indicate which interrupts
have already been configured by the firmware and should be left unmanaged.
This should have one 32-bit word per status/set/clear/mask group.
If multiple reg ranges and interrupt-parent entries are present on an SMP
system, the driver will allow IRQ SMP affinity to be set up through the
/proc/irq/ interface. In the simplest possible configuration, only one