RE: [PATCH v2 2/6] dt-bindings: Add DT binding for PCIE GEN4 EP of the layerscape

[Xiaowei Bao]

> -----Original Message-----
> From: Rob Herring <robh@xxxxxxxxxx>
> Sent: 2019年10月18日 3:03
> To: Xiaowei Bao <xiaowei.bao@xxxxxxx>
> Cc: Z.q. Hou <zhiqiang.hou@xxxxxxx>; bhelgaas@xxxxxxxxxx;
> mark.rutland@xxxxxxx; shawnguo@xxxxxxxxxx; Leo Li
> <leoyang.li@xxxxxxx>; kishon@xxxxxx; lorenzo.pieralisi@xxxxxxx; M.h. Lian
> <minghuan.lian@xxxxxxx>; andrew.murray@xxxxxxx; Mingkai Hu
> <mingkai.hu@xxxxxxx>; linux-pci@xxxxxxxxxxxxxxx;
> linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx;
> linux-kernel@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH v2 2/6] dt-bindings: Add DT binding for PCIE GEN4 EP of
> the layerscape
> 
> On Tue, Oct 15, 2019 at 04:36:58PM +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@xxxxxxx>
> > ---
> > v2:
> >  - remove the status entry in EP Example.
> >
> >  .../bindings/pci/layerscape-pcie-gen4.txt          | 27
> +++++++++++++++++++++-
> >  1 file changed, 26 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..06f9309 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@3400000 {
> >  		compatible = "fsl,lx2160a-pcie";
> > @@ -50,3 +65,13 @@ 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@3400000 {
> 
> To repeat my previous comment:

Sorry, I missed this comment.

Thanks
Xiaowei

> 
> pcie-endpoint@...
> 
> > +		compatible = "fsl,lx2160a-pcie-ep";
> > +		reg = <0x00 0x03400000 0x0 0x00100000
> > +		       0x80 0x00000000 0x8 0x00000000>;
> > +		reg-names = "regs", "addr_space";
> > +		apio-wins = <8>;
> > +	};
> > --
> > 2.9.5
> >