[PATCH 1/1] doc/bindings: Update Layerscape PCIe devicetree bindings for LS2080A
bhupesh.sharma at freescale.com
Mon Nov 2 19:43:26 PST 2015
> From: Bjorn Helgaas [mailto:helgaas at kernel.org]
> Sent: Tuesday, November 03, 2015 3:31 AM
> On Mon, Oct 26, 2015 at 01:01:21PM +0530, Bhupesh Sharma wrote:
> > Update the definition of the Layerscape PCI compatible string to add
> > support for LS2080A, as the controller on LS2080A is different from
> > LS1021A SoC.
> > While at it, move the clock related properties in the Designware PCIe
> > controller bindings to 'optional' set of properties.
> > Signed-off-by: Minghuan Lian <Minghuan.Lian at freescale.com>
> > Signed-off-by: Bhupesh Sharma <bhupesh.sharma at freescale.com>
> > Acked-by: Arnd Bergmann <arnd at arndb.de>
> > ---
> > Hi Bjorn,
> > As discussed with Arnd
> > (http://www.spinics.net/lists/linux-clk/msg04092.html),
> > this patch depends on a patch that is in your PCI tree but not yet in
> > So, sending this to you, so that you can apply the patch on top of the
> > other one.
> > .../devicetree/bindings/pci/designware-pcie.txt | 10 +++++-----
> > .../devicetree/bindings/pci/layerscape-pci.txt | 14
> Split into two patches and applied to pci/host-designware and pci/host-
> layerscape, since the clocks change doesn't look related to the
> Layerscape change.
> > diff --git a/Documentation/devicetree/bindings/pci/designware-pcie.txt
> > b/Documentation/devicetree/bindings/pci/designware-pcie.txt
> > index 0036ab3..576218a 100644
> > --- a/Documentation/devicetree/bindings/pci/designware-pcie.txt
> > +++ b/Documentation/devicetree/bindings/pci/designware-pcie.txt
> > @@ -14,11 +14,6 @@ Required properties:
> > - interrupt-map-mask and interrupt-map: standard PCI properties
> > to define the mapping of the PCIe interface to interrupt
> > numbers.
> > -- clocks: Must contain an entry for each entry in clock-names.
> > - See ../clocks/clock-bindings.txt for details.
> > -- clock-names: Must include the following entries:
> > - - "pcie"
> > - - "pcie_bus"
> > Optional properties:
> > - num-lanes: number of lanes to use (this property should be
> > specified unless @@ -27,3 +22,8 @@ Optional properties:
> > - bus-range: PCI bus numbers covered (it is recommended for new
> devicetrees to
> > specify this property, to keep backwards compatibility a range of
> > is assumed if not present)
> > +- clocks: Must contain an entry for each entry in clock-names.
> > + See ../clocks/clock-bindings.txt for details.
> > +- clock-names: Must include the following entries:
> > + - "pcie"
> > + - "pcie_bus"
> > diff --git a/Documentation/devicetree/bindings/pci/layerscape-pci.txt
> > b/Documentation/devicetree/bindings/pci/layerscape-pci.txt
> > index 6286f04..ac7e07e 100644
> > --- a/Documentation/devicetree/bindings/pci/layerscape-pci.txt
> > +++ b/Documentation/devicetree/bindings/pci/layerscape-pci.txt
> > @@ -1,10 +1,20 @@
> > Freescale Layerscape PCIe controller
> > -This PCIe host controller is based on the Synopsis Designware PCIe IP
> > +This PCIe host controller is based on the Synopsys Designware PCIe IP
> > and thus inherits all the common properties defined in designware-
> > +This controller derives its clocks from the Reset Configuration Word
> > +(RCW) which is used to describe the PLL settings at the time of chip-
> > +
> > +Also as per the available Reference Manuals, there is no specific
> > +register available in the Freescale PCIe controller register set,
> > +which can allow determining the underlying Designware PCIe controller
> > +version information.
> > +
> > Required properties:
> > -- compatible: should contain the platform identifier such as
> > +- compatible: should contain the platform identifier such as:
> > + "fsl,ls1021a-pcie", "snps,dw-pcie"
> > + "fsl,ls2080a-pcie", "snps,dw-pcie"
> > - reg: base addresses and lengths of the PCIe controller
> > - interrupts: A list of interrupt outputs of the controller. Must
> contain an
> > entry for each entry in the interrupt-names property.
> > --
> > 18.104.22.168
> > --
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