On Thu, May 05, 2016 at 05:03:31PM -0500, Rob Herring wrote: > On Wed, May 04, 2016 at 01:54:17PM +0200, Niklas Cassel wrote: > > From: Niklas Cassel <niklas.cassel@xxxxxxxx> > > > > This commit adds the Device Tree binding documentation that allows to > > describe the PCIe controller found in the Axis ARTPEC-6 SoC. > > > > Signed-off-by: Niklas Cassel <niklas.cassel@xxxxxxxx> > > --- > > .../devicetree/bindings/pci/axis,artpec6-pcie.txt | 45 ++++++++++++++++++++++ > > 1 file changed, 45 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/pci/axis,artpec6-pcie.txt > > > > diff --git a/Documentation/devicetree/bindings/pci/axis,artpec6-pcie.txt b/Documentation/devicetree/bindings/pci/axis,artpec6-pcie.txt > > new file mode 100644 > > index 0000000..fdac2a2 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/pci/axis,artpec6-pcie.txt > > @@ -0,0 +1,45 @@ > > +* Axis ARTPEC-6 PCIe interface > > + > > +This PCIe host controller is based on the Synopsis Designware PCIe IP > > +and thus inherits all the common properties defined in designware-pcie.txt. > > + > > +Required properties: > > +- compatible: "axis,artpec6-pcie", "snps,dw-pcie" > > +- reg: base addresses and lengths of the pcie controller (DBI), > > + the phy controller, and configuration address space. > > +- reg-names: Must include the following entries: > > + - "dbi" > > + - "phy" > > + - "config" > > +- interrupts: A list of interrupt outputs of the controller. Must contain an > > + entry for each entry in the interrupt-names property. > > +- interrupt-names: Must include the following entries: > > + - "msi": The interrupt that is asserted when an MSI is received > > +- syscon: Should contain a link to the syscon device node. > > What is the syscon for? Perhaps a name that reflects the purpose. It's the SoC System Controller, and holds some chip-specific registers for the Synopsys IP control, clocks and some termination variables spring to mind. It was named sysctrl earlier, although that's not very much more descriptive. > Rob /^JN - Jesper Nilsson -- Jesper Nilsson -- jesper.nilsson@xxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html