linux-kernel - RE: [PATCH v2] dt-bindings: PCI: xilinx-cpm: Fix reg property order

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Date:   Wed, 25 May 2022 11:03:32 +0000
From:   Bharat Kumar Gogada <bharatku@...inx.com>
To:     Michal Simek <michals@...inx.com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
CC:     "lorenzo.pieralisi@....com" <lorenzo.pieralisi@....com>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        "robh@...nel.org" <robh@...nel.org>
Subject: RE: [PATCH v2] dt-bindings: PCI: xilinx-cpm: Fix reg property order

Hi Rob,

Can you please check this.

Regards,
Bharat

> 
> On 5/16/22 12:22, Bharat Kumar Gogada wrote:
> > All existing vendor DTSes are using "cpm_slcr" reg followed by "cfg" reg.
> >
> > This order is also suggested by node name which is pcie@...10000 which
> > suggests that cpm_slcr register should be the first.
> >
> > Driver itself is using devm_platform_ioremap_resource_byname() for
> > both names that's why there is no functional change even on
> > description which are using current order.
> >
> > But still prefer to change order to cover currently used description.
> > Fixes: e22fadb1d014 ("PCI: xilinx-cpm: Add YAML schemas for Versal CPM
> > Root Port")
> >
> > Signed-off-by: Bharat Kumar Gogada <bharat.kumar.gogada@...inx.com>
> > ---
> >   .../devicetree/bindings/pci/xilinx-versal-cpm.yaml     | 10 +++++-----
> >   1 file changed, 5 insertions(+), 5 deletions(-)
> >
> > diff --git
> > a/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml
> > b/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml
> > index 32f4641085bc..cca395317a4c 100644
> > --- a/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml
> > +++ b/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml
> > @@ -18,13 +18,13 @@ properties:
> >
> >     reg:
> >       items:
> > -      - description: Configuration space region and bridge registers.
> >         - description: CPM system level control and status registers.
> > +      - description: Configuration space region and bridge registers.
> >
> >     reg-names:
> >       items:
> > -      - const: cfg
> >         - const: cpm_slcr
> > +      - const: cfg
> >
> >     interrupts:
> >       maxItems: 1
> > @@ -86,9 +86,9 @@ examples:
> >                          ranges = <0x02000000 0x0 0xe0000000 0x0 0xe0000000 0x0
> 0x10000000>,
> >                                   <0x43000000 0x80 0x00000000 0x80 0x00000000 0x0
> 0x80000000>;
> >                          msi-map = <0x0 &its_gic 0x0 0x10000>;
> > -                       reg = <0x6 0x00000000 0x0 0x10000000>,
> > -                             <0x0 0xfca10000 0x0 0x1000>;
> > -                       reg-names = "cfg", "cpm_slcr";
> > +                       reg = <0x0 0xfca10000 0x0 0x1000>,
> > +                             <0x6 0x00000000 0x0 0x10000000>;
> > +                       reg-names = "cpm_slcr", "cfg";
> >                          pcie_intc_0: interrupt-controller {
> >                                  #address-cells = <0>;
> >                                  #interrupt-cells = <1>;
> 
> Reviewed-by: Michal Simek <michal.simek@....com>
> 
> Thanks,
> Michal