| Message ID | 20180907130553.14271-3-marek.behun@nic.cz |
|---|---|
| State | Changes Requested, archived |
| Headers | show |
| Series | None | expand |
On Fri, Sep 07, 2018 at 03:05:51PM +0200, Marek Behún wrote: > This adds device tree binding documentation for the CPU watchdog found > on Armada 37xx SOCs (EspressoBin, Turris Mox). > > Signed-off-by: Marek Behún <marek.behun@nic.cz> > Cc: Rob Herring <robh+dt@kernel.org> > Cc: devicetree@vger.kernel.org > --- > .../bindings/watchdog/armada-37xx-wdt.txt | 23 ++++++++++++++++++++++ > 1 file changed, 23 insertions(+) > create mode 100644 Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt > > diff --git a/Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt b/Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt > new file mode 100644 > index 000000000000..4ba9e40ad386 > --- /dev/null > +++ b/Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt > @@ -0,0 +1,23 @@ > +* Armada 37xx CPU Watchdog Timer Controller > + > +Required properties: > +- compatible : must be "marvell,armada-3700-wdt" > +- reg : base physical address of the controller and length of memory mapped > + region. > +- clocks : the clock feeding the watchdog timer. See clock-bindings.txt > +- marvell,system-controller : reference to syscon node for the CPU Miscellaneous > + Registers > + > +Example: > + > + cpu_misc: system-controller@d000 { > + compatible = "syscon", "simple-mfd"; syscon alone without an SoC specific compatible is not valid and simple-mfd is pointless without child nodes. > + reg = <0xd000 0x1000>; > + }; > + > + wdt: watchdog-timer@8300 { watchdog@... > + compatible = "marvell,armada-3700-wdt"; > + reg = <0x8300 0x40>; > + marvell,system-controller = <&cpu_misc>; > + clocks = <&xtalclk>; > + }; > -- > 2.16.4 >
diff --git a/Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt b/Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt new file mode 100644 index 000000000000..4ba9e40ad386 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt @@ -0,0 +1,23 @@ +* Armada 37xx CPU Watchdog Timer Controller + +Required properties: +- compatible : must be "marvell,armada-3700-wdt" +- reg : base physical address of the controller and length of memory mapped + region. +- clocks : the clock feeding the watchdog timer. See clock-bindings.txt +- marvell,system-controller : reference to syscon node for the CPU Miscellaneous + Registers + +Example: + + cpu_misc: system-controller@d000 { + compatible = "syscon", "simple-mfd"; + reg = <0xd000 0x1000>; + }; + + wdt: watchdog-timer@8300 { + compatible = "marvell,armada-3700-wdt"; + reg = <0x8300 0x40>; + marvell,system-controller = <&cpu_misc>; + clocks = <&xtalclk>; + };
This adds device tree binding documentation for the CPU watchdog found on Armada 37xx SOCs (EspressoBin, Turris Mox). Signed-off-by: Marek Behún <marek.behun@nic.cz> Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org --- .../bindings/watchdog/armada-37xx-wdt.txt | 23 ++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt