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dt-bindings: Add documentation for the BCM63138 timer and syscon-reboot

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A timer node and a syscon-reboot node are required for software reboot
to work on BCM63138, document these two nodes in the platform binding.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
This commit is contained in:
Florian Fainelli 2015-04-23 15:55:00 -07:00
parent 592e2ddfde
commit ac61cf8a01
1 changed files with 34 additions and 0 deletions
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34
Documentation/devicetree/bindings/arm/bcm/brcm,bcm63138.txt
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@ -49,3 +49,37 @@ Example:
compatible = "brcm,bcm63138-bootlut";
reg = <0x8000 0x50>;
};
=======
reboot
------
Two nodes are required for software reboot: a timer node and a syscon-reboot node.
Timer node:
- compatible: Must be "brcm,bcm6328-timer", "syscon"
- reg: Register base address and length
Syscon reboot node:
See Documentation/devicetree/bindings/power/reset/syscon-reboot.txt for the
detailed list of properties, the two values defined below are specific to the
BCM6328-style timer:
- offset: Should be 0x34 to denote the offset of the TIMER_WD_TIMER_RESET register
from the beginning of the TIMER block
- mask: Should be 1 for the SoftRst bit.
Example:
timer: timer@80 {
compatible = "brcm,bcm6328-timer", "syscon";
reg = <0x80 0x3c>;
};
reboot {
compatible = "syscon-reboot";
regmap = <&timer>;
offset = <0x34>;
mask = <0x1>;
};