linux-kernel - Re: [PATCH 03/11] devicetree: bindings: Document qcom,kpss-acc

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Message-Id: <EA8C3C10-2AD6-4179-A785-12001E439364@codeaurora.org>
Date:	Tue, 5 Nov 2013 11:13:47 -0600
From:	Kumar Gala <galak@...eaurora.org>
To:	Stephen Boyd <sboyd@...eaurora.org>
Cc:	linux-arm-kernel@...ts.infradead.org,
	David Brown <davidb@...eaurora.org>,
	Rohit Vaswani <rvaswani@...eaurora.org>,
	linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	<devicetree@...r.kernel.org>
Subject: Re: [PATCH 03/11] devicetree: bindings: Document qcom,kpss-acc


On Nov 1, 2013, at 5:08 PM, Stephen Boyd wrote:

> The kpss acc binding describes the clock, reset, and power domain
> controller for a Krait CPU.
> 
> Cc: <devicetree@...r.kernel.org>
> Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
> ---
> .../devicetree/bindings/arm/msm/qcom,kpss-acc.txt   | 21 +++++++++++++++++++++
> 1 file changed, 21 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,kpss-acc.txt
> 
> diff --git a/Documentation/devicetree/bindings/arm/msm/qcom,kpss-acc.txt b/Documentation/devicetree/bindings/arm/msm/qcom,kpss-acc.txt
> new file mode 100644
> index 0000000..ed4a9c8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/msm/qcom,kpss-acc.txt
> @@ -0,0 +1,21 @@
> +* Krait Processor Sub-system (KPSS) Application Clock Controller (ACC)
> +
> +The KPSS ACC provides clock, power domain, and reset control to a Krait CPU.
> +There is one ACC register region per CPU within the KPSS remaped region as
> +well as an alias register region that remaps accesses to the ACC associated
> +with the CPU accessing the region.
> +
> +Required Properties:
> +
> +- compatible : Shall contain "qcom,kpss-acc-v1" or "qcom,kpss-acc-v2".
> +- reg: Specifies the base address and size of the banked register region.
> +- cpu-offset : per-cpu offset used when the device is accessed without the
> +		CPU remapping facilities.
> +		The offset is cpu-offset + (0x10000 * cpu-nr).
> +
> +Example:
> +
> +	clock-controller@...8000 {
> +		compatible = "qcom,kpss-acc-v2";
> +		reg = <0x02008000 0x1000>;
> +	};
> -- 

I don't get the cpu-offset business, shouldn't this just be:
	reg = <0x02008000 0x1000>, <0x02018000 0x1000>, <0x02028000 0x1000>, <0x02038000 0x1000>;

- k

-- 
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation

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