On Tue, Feb 02, 2016 at 04:28:52PM +0530, Vineet Gupta wrote:
> ARC Timers have historically been probed directly.
> As precursor to start probing Timers thru DT introduce these bindings
>
> Cc: Daniel Lezcano <daniel.lezc...@linaro.org>
> Cc: Rob Herring <r...@kernel.org>
> Cc: devicet...@vger.kernel.org
> Signed-off-by: Vineet Gupta <vgu...@synopsys.com>
> ---
> .../devicetree/bindings/timer/snps,arc-timer0.txt | 23
> ++++++++++++++++++++++
> .../devicetree/bindings/timer/snps,arc-timer1.txt | 17 ++++++++++++++++
> .../devicetree/bindings/timer/snps,archs-gfrc.txt | 14 +++++++++++++
> .../devicetree/bindings/timer/snps,archs-rtc.txt | 14 +++++++++++++
> arch/arc/boot/dts/abilis_tb10x.dtsi | 12 +++++++++++
> arch/arc/boot/dts/skeleton.dtsi | 12 +++++++++++
> arch/arc/boot/dts/skeleton_hs.dtsi | 12 +++++++++++
> arch/arc/boot/dts/skeleton_hs_idu.dtsi | 12 +++++++++++
> 8 files changed, 116 insertions(+)
> create mode 100644
> Documentation/devicetree/bindings/timer/snps,arc-timer0.txt
> create mode 100644
> Documentation/devicetree/bindings/timer/snps,arc-timer1.txt
> create mode 100644
> Documentation/devicetree/bindings/timer/snps,archs-gfrc.txt
> create mode 100644 Documentation/devicetree/bindings/timer/snps,archs-rtc.txt
>
> diff --git a/Documentation/devicetree/bindings/timer/snps,arc-timer0.txt
> b/Documentation/devicetree/bindings/timer/snps,arc-timer0.txt
> new file mode 100644
> index 000000000000..ceb80c72a90b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/timer/snps,arc-timer0.txt
> @@ -0,0 +1,23 @@
> +Synopsys ARC Local Timer with Interrupt Capabilities
> +- Found on all ARC CPUs (ARC700/ARCHS)
> +- Mandatory clockevent provider
> +
> +Required properties:
> +
> +- compatible : should be "snps,arc-timer0"
timer0 and timer1 are different h/w blocks, not just different
instances?
> +- interrupts : single Interrupt going into parent intc
> + (16 for ARCHS cores, 3 for ARC700 cores)
> +- clocks : phandle to the source clock
> +
> +Optional properties:
> +
> +- interrupt-parent : phandle to parent intc
> +
> +Example:
> +
> + timer0: timer_clkevt {
just "timer" for node name. clkevt is a Linuxism.
> + compatible = "snps,arc-timer0";
> + interrupts = <3>;
> + interrupt-parent = <&core_intc>;
> + clocks = <&timer0_clk>;
> + };
> diff --git a/Documentation/devicetree/bindings/timer/snps,arc-timer1.txt
> b/Documentation/devicetree/bindings/timer/snps,arc-timer1.txt
> new file mode 100644
> index 000000000000..4886192ce2f2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/timer/snps,arc-timer1.txt
> @@ -0,0 +1,17 @@
> +Synopsys ARC Free Running Local 32-bit Timer
> +- Found on all ARC CPUs (ARC700/ARCHS)
> +- Mandatory clocksource provider on ARC700
> +- Optional clocksource provider on UP ARC HS CPUs
> + (and if better timer archs-rtc not available in SoC)
> +
> +Required properties:
> +
> +- compatible : should be "snps,arc-timer1"
> +- clocks : phandle to the source clock
No interrupt because it doesn't have one or you use this as a
clocksource and don't need it?
> +
> +Example:
> +
> + timer1: timer_clksrc {
> + compatible = "snps,arc-timer1";
> + clocks = <&timer0_clk>;
> + };
> diff --git a/Documentation/devicetree/bindings/timer/snps,archs-gfrc.txt
> b/Documentation/devicetree/bindings/timer/snps,archs-gfrc.txt
> new file mode 100644
> index 000000000000..cce60e16aa0d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/timer/snps,archs-gfrc.txt
> @@ -0,0 +1,14 @@
> +Synopsys ARC Free Running 64-bit Global Timer for ARC HS CPUs
> +- clocksourc provider for SMP SoC
> +
> +Required properties:
> +
> +- compatible : should be "snps,archs-gfrc"
> +- clocks : phandle to the source clock
> +
> +Example:
> +
> + timer1: timer_clksrc {
> + compatible = "snps,archs-gfrc";
> + clocks = <&timer0_clk>;
> + };
> diff --git a/Documentation/devicetree/bindings/timer/snps,archs-rtc.txt
> b/Documentation/devicetree/bindings/timer/snps,archs-rtc.txt
> new file mode 100644
> index 000000000000..f3b49938812b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/timer/snps,archs-rtc.txt
> @@ -0,0 +1,14 @@
> +Synopsys ARC Free Running 64-bit Local Timer for ARC HS CPUs
> +- clocksourc provider for UP SoC
local timer on a UP processor?
> +
> +Required properties:
> +
> +- compatible : should be "snps,archs-rtc"
> +- clocks : phandle to the source clock
> +
> +Example:
> +
> + timer1: timer_clksrc {
> + compatible = "snps,arc-rtc";
> + clocks = <&timer0_clk>;
> + };
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