From mboxrd@z Thu Jan 1 00:00:00 1970 From: Simon Arlott Subject: [PATCH 01/11] clocksource: Add brcm,bcm6345-timer/brcm,bcm6318-timer device tree binding Date: Tue, 1 Dec 2015 13:01:52 +0000 Message-ID: <565D9A40.60409@simon.arlott.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Sender: linux-watchdog-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Guenter Roeck , Thomas Gleixner Cc: Florian Fainelli , MIPS Mailing List , Jonas Gorski , "devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Ralf Baechle , Jason Cooper , Marc Zyngier , Kevin Cernekee , Wim Van Sebroeck , Maxime Bizon , Linux Kernel Mailing List , linux-watchdog-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala List-Id: devicetree@vger.kernel.org Add device tree bindings for the BCM6345/BCM6318 timers. This is requir= ed for the BCM6345 watchdog which needs to respond to one of the timer interrupts. Signed-off-by: Simon Arlott Acked-by: Rob Herring --- .../bindings/timer/brcm,bcm6318-timer.txt | 44 ++++++++++++++= ++++++ .../bindings/timer/brcm,bcm6345-timer.txt | 47 ++++++++++++++= ++++++++ 2 files changed, 91 insertions(+) create mode 100644 Documentation/devicetree/bindings/timer/brcm,bcm631= 8-timer.txt create mode 100644 Documentation/devicetree/bindings/timer/brcm,bcm634= 5-timer.txt diff --git a/Documentation/devicetree/bindings/timer/brcm,bcm6318-timer= =2Etxt b/Documentation/devicetree/bindings/timer/brcm,bcm6318-timer.txt new file mode 100644 index 0000000..cf4be7e --- /dev/null +++ b/Documentation/devicetree/bindings/timer/brcm,bcm6318-timer.txt @@ -0,0 +1,44 @@ +Broadcom BCM6318 Timer + +This block is a timer that is connected to multiple interrupts on the = main +interrupt controller and functions as a programmable interrupt control= ler for +timer events. There is a main timer interrupt for all timers. + +- 4 independent timers with their own interrupt, and own maskable leve= l + interrupt bit in the main timer interrupt + +- 1 watchdog timer with an unmaskable level interrupt bit in the main = timer + interrupt + +- Contains one enable/status word pair + +- No atomic set/clear operations + +Required properties: + +- compatible: should be "brcm,bcm-timer", "brcm,bcm6318-timer" +- reg: specifies the base physical address and size of the registers, = excluding + the watchdog registers +- interrupt-controller: identifies the node as an interrupt controller +- #interrupt-cells: specifies the number of cells needed to encode an = interrupt + source, should be 1. +- interrupt-parent: specifies the phandle to the parent interrupt cont= roller(s) + this one is cascaded from +- interrupts: specifies the interrupt line(s) in the interrupt-parent = controller + node for the main timer interrupt, followed by the individual timer + interrupts; valid values depend on the type of parent interrupt cont= roller +- clocks: phandle of timer reference clock (periph) + +Example: + +timer: timer@10000040 { + compatible =3D "brcm,bcm63148-timer", "brcm,bcm6318-timer"; + reg =3D <0x10000040 0x28>; + + interrupt-controller; + #interrupt-cells =3D <1>; + + interrupt-parent =3D <&periph_intc>; + interrupts =3D <31>, <0>, <1>, <2>, <3>; + clock =3D <&periph_osc>; +}; diff --git a/Documentation/devicetree/bindings/timer/brcm,bcm6345-timer= =2Etxt b/Documentation/devicetree/bindings/timer/brcm,bcm6345-timer.txt new file mode 100644 index 0000000..03250dd --- /dev/null +++ b/Documentation/devicetree/bindings/timer/brcm,bcm6345-timer.txt @@ -0,0 +1,47 @@ +Broadcom BCM6345 Timer + +This block is a timer that is connected to one interrupt on the main i= nterrupt +controller and functions as a programmable interrupt controller for ti= mer +events. + +- 3 independent timers with their own maskable level interrupt bit (bu= t not + per CPU because there is only one parent interrupt and the timers sh= are it) + +- 1 watchdog timer with an unmaskable level interrupt + +- Contains one enable/status word pair + +- No atomic set/clear operations + +The lack of per CPU ability of timers makes them unusable as a set of +clockevent devices, otherwise they could be attached to the remaining +interrupts. + +Required properties: + +- compatible: should be "brcm,bcm-timer", "brcm,bcm6345-timer" +- reg: specifies the base physical address and size of the registers, = excluding + the watchdog registers +- interrupt-controller: identifies the node as an interrupt controller +- #interrupt-cells: specifies the number of cells needed to encode an = interrupt + source, should be 1. +- interrupt-parent: specifies the phandle to the parent interrupt cont= roller(s) + this one is cascaded from +- interrupts: specifies the interrupt line(s) in the interrupt-parent = controller + node for the timer interrupt; valid values depend on the type of par= ent + interrupt controller +- clocks: phandle of timer reference clock (periph) + +Example: + +timer: timer@10000080 { + compatible =3D "brcm,bcm63168-timer", "brcm,bcm6345-timer"; + reg =3D <0x10000080 0x1c>; + + interrupt-controller; + #interrupt-cells =3D <1>; + + interrupt-parent =3D <&periph_intc>; + interrupts =3D <0>; + clock=C2=B7=3D=C2=B7<&periph_osc>; +}; --=20 2.1.4 --=20 Simon Arlott -- To unsubscribe from this list: send the line "unsubscribe linux-watchdo= g" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html