linux-kernel - RE: [PATCH 2/6] dt-bindings: Add DT binding for PCIE GEN4 EP of the layerscape

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Message-ID: <AM5PR04MB3299504E1D4869B3B727233EF59A0@AM5PR04MB3299.eurprd04.prod.outlook.com>
Date:   Tue, 8 Oct 2019 01:26:15 +0000
From:   Xiaowei Bao <xiaowei.bao@....com>
To:     Rob Herring <robh@...nel.org>
CC:     "Z.q. Hou" <zhiqiang.hou@....com>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        Leo Li <leoyang.li@....com>, "kishon@...com" <kishon@...com>,
        "lorenzo.pieralisi@....com" <lorenzo.pieralisi@....com>,
        "M.h. Lian" <minghuan.lian@....com>,
        "andrew.murray@....com" <andrew.murray@....com>,
        Mingkai Hu <mingkai.hu@....com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 2/6] dt-bindings: Add DT binding for PCIE GEN4 EP of the
 layerscape



> -----Original Message-----
> From: Rob Herring <robh@...nel.org>
> Sent: 2019年10月1日 6:22
> To: Xiaowei Bao <xiaowei.bao@....com>
> Cc: Z.q. Hou <zhiqiang.hou@....com>; bhelgaas@...gle.com;
> mark.rutland@....com; shawnguo@...nel.org; Leo Li
> <leoyang.li@....com>; kishon@...com; lorenzo.pieralisi@....com; M.h. Lian
> <minghuan.lian@....com>; andrew.murray@....com; Mingkai Hu
> <mingkai.hu@....com>; linux-pci@...r.kernel.org;
> linux-arm-kernel@...ts.infradead.org; devicetree@...r.kernel.org;
> linux-kernel@...r.kernel.org
> Subject: Re: [PATCH 2/6] dt-bindings: Add DT binding for PCIE GEN4 EP of the
> layerscape
> 
> On Mon, Sep 16, 2019 at 10:17:38AM +0800, Xiaowei Bao wrote:
> > Add the documentation for the Device Tree binding of the layerscape
> > PCIe GEN4 controller with EP mode.
> >
> > Signed-off-by: Xiaowei Bao <xiaowei.bao@....com>
> > ---
> >  .../bindings/pci/layerscape-pcie-gen4.txt          | 28
> +++++++++++++++++++++-
> >  1 file changed, 27 insertions(+), 1 deletion(-)
> >
> > diff --git
> > a/Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt
> > b/Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt
> > index b40fb5d..414a86c 100644
> > --- a/Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt
> > +++ b/Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt
> > @@ -3,6 +3,8 @@ NXP Layerscape PCIe Gen4 controller  This PCIe
> > controller is based on the Mobiveil PCIe IP and thus inherits all  the
> > common properties defined in mobiveil-pcie.txt.
> >
> > +HOST MODE
> > +=========
> >  Required properties:
> >  - compatible: should contain the platform identifier such as:
> >    "fsl,lx2160a-pcie"
> > @@ -23,7 +25,20 @@ Required properties:
> >  - msi-parent : See the generic MSI binding described in
> >    Documentation/devicetree/bindings/interrupt-controller/msi.txt.
> >
> > -Example:
> > +DEVICE MODE
> > +=========
> > +Required properties:
> > +- compatible: should contain the platform identifier such as:
> > +  "fsl,lx2160a-pcie-ep"
> > +- reg: base addresses and lengths of the PCIe controller register blocks.
> > +  "regs": PCIe controller registers.
> > +  "addr_space" EP device CPU address.
> > +- apio-wins: number of requested apio outbound windows.
> > +
> > +Optional Property:
> > +- max-functions: Maximum number of functions that can be configured
> (default 1).
> > +
> > +RC Example:
> >
> >  	pcie@...0000 {
> >  		compatible = "fsl,lx2160a-pcie";
> > @@ -50,3 +65,14 @@ Example:
> >  				<0000 0 0 3 &gic 0 0 GIC_SPI 111
> IRQ_TYPE_LEVEL_HIGH>,
> >  				<0000 0 0 4 &gic 0 0 GIC_SPI 112
> IRQ_TYPE_LEVEL_HIGH>;
> >  	};
> > +
> > +EP Example:
> > +
> > +	pcie_ep@...0000 {
> 
> pcie-endpoint@...
> 
> > +		compatible = "fsl,lx2160a-pcie-ep";
> > +		reg = <0x00 0x03400000 0x0 0x00100000
> > +		       0x80 0x00000000 0x8 0x00000000>;
> > +		reg-names = "regs", "addr_space";
> > +		apio-wins = <8>;
> > +		status = "disabled";
> 
> Don't show status in examples.

Sorry, I will add it, thanks

Thanks
Xiaowei

> 
> > +	};
> > --
> > 2.9.5
> >