linux-kernel - Re: [PATCH v3 3/6] DT: PCI: qcom: Document PCIe devicetree bindings

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Date:	Mon, 23 Nov 2015 17:17:44 -0600
From:	Rob Herring <robh@...nel.org>
To:	Stanimir Varbanov <stanimir.varbanov@...aro.org>
Cc:	linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-pci@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	Mark Rutland <mark.rutland@....com>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Arnd Bergmann <arnd@...db.de>,
	Jingoo Han <jingoohan1@...il.com>,
	Pratyush Anand <pratyush.anand@...il.com>,
	Bjorn Andersson <bjorn.andersson@...ymobile.com>,
	Stanimir Varbanov <svarbanov@...sol.com>
Subject: Re: [PATCH v3 3/6] DT: PCI: qcom: Document PCIe devicetree bindings

On Mon, Nov 23, 2015 at 11:29:00AM +0200, Stanimir Varbanov wrote:
> From: Stanimir Varbanov <svarbanov@...sol.com>
> 
> Document Qualcomm PCIe driver devicetree bindings.
> 
> Signed-off-by: Stanimir Varbanov <svarbanov@...sol.com>
> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@...aro.org>
> ---
>  .../devicetree/bindings/pci/qcom,pcie.txt          |  231 ++++++++++++++++++++
>  1 file changed, 231 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pci/qcom,pcie.txt
> 
> diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.txt b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
> new file mode 100644
> index 000000000000..d7640d45fa31
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
> @@ -0,0 +1,231 @@
> +* Qualcomm PCI express root complex
> +
> +- compatible:
> +	Usage: required
> +	Value type: <stringlist>
> +	Definition: Value shall include
> +		    - "qcom,pcie-v0" for apq/ipq8064
> +		    - "qcom,pcie-v1" for apq8084

Use chip part numbers, not versions.

Also, shouldn't you have the Designware compatible in addition.

[...]

> +
> +- <name>-gpio:

Use -gpios

> +	Usage: optional
> +	Value type: <prop-encoded-array>
> +	Definition: List of phandle and gpio specifier pairs. Should contain
> +		    - "perst"  PCIe endpoint reset signal line
> +		    - "pewake" PCIe endpoint wake signal line

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