From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mans Rullgard Subject: [PATCH v2 1/2] devicetree: add binding for generic mmio clocksource Date: Wed, 7 Oct 2015 16:37:13 +0100 Message-ID: <1444232234-2133-1-git-send-email-mans@mansr.com> Return-path: Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@vger.kernel.org This adds a DT binding for a generic mmio clocksource as implemented by clocksource_mmio_init(). Signed-off-by: Mans Rullgard --- Changed in v2: - added sched_clock support --- .../devicetree/bindings/timer/clocksource-mmio.txt | 28 ++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 Documentation/devicetree/bindings/timer/clocksource-mmio.txt diff --git a/Documentation/devicetree/bindings/timer/clocksource-mmio.txt b/Documentation/devicetree/bindings/timer/clocksource-mmio.txt new file mode 100644 index 0000000..cfb3601 --- /dev/null +++ b/Documentation/devicetree/bindings/timer/clocksource-mmio.txt @@ -0,0 +1,28 @@ +Generic MMIO clocksource + +Required properties: + +- compatible: should be "clocksource-mmio" +- reg: the physical address of the counter register +- reg-io-width: size of counter register in bytes, should be 2 or 4 +- clocks: phandle to the source clock +- clocksource-bits: number of valid bits +- clocksource-rating: rating of the clocksource + +Optional properties: + +- clocksource-counts-down: indicates that counter counts down +- label: name of the clocksource +- linux,sched-clock: boolean, register clocksource as sched_clock + +Example: + +clocksource { + compatible = "clocksource-mmio"; + reg = <0x10000 4>; + reg-io-width = <4>; + clocksource-bits = <32>; + clocksource-rating = <300>; + clocks = <&clk>; + linux,sched_clock; +} -- 2.5.3 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html