diff mbox

[1/4] PCI: rcar-gen2: Add generic compatibility string

Message ID 1448954672-27236-2-git-send-email-horms+renesas@verge.net.au
State Superseded
Headers show

Commit Message

Simon Horman Dec. 1, 2015, 7:24 a.m. UTC
Add fallback compatibility string for R-Car Gen 2 Family.
This is in keeping with the fallback scheme being adopted wherever
appropriate for drivers for Renesas SoCs.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt | 11 +++++++++--
 drivers/pci/host/pci-rcar-gen2.c                        |  1 +
 2 files changed, 10 insertions(+), 2 deletions(-)

Comments

Geert Uytterhoeven Dec. 1, 2015, 8:41 a.m. UTC | #1
On Tue, Dec 1, 2015 at 8:24 AM, Simon Horman <horms+renesas@verge.net.au> wrote:
> Add fallback compatibility string for R-Car Gen 2 Family.
> This is in keeping with the fallback scheme being adopted wherever
> appropriate for drivers for Renesas SoCs.
>
> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
> ---
>  Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt | 11 +++++++++--
>  drivers/pci/host/pci-rcar-gen2.c                        |  1 +
>  2 files changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt b/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
> index 891463cb09c2..b19be08a8113 100644
> --- a/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
> +++ b/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
> @@ -8,7 +8,14 @@ OHCI and EHCI controllers.
>  Required properties:
>  - compatible: "renesas,pci-r8a7790" for the R8A7790 SoC;
>               "renesas,pci-r8a7791" for the R8A7791 SoC;
> -             "renesas,pci-r8a7794" for the R8A7794 SoC.
> +             "renesas,pci-r8a7794" for the R8A7794 SoC;
> +             "renesas,pci-gen2" for a generic R-Car Gen2 compatible device.

Shouldn't that be "renesas,pci-rcar-gen" or "renesas,pci-rcar2"?

Else you'll be in trouble when Renesas starts focussing on airplanes
(R-Plane Gen2), rockets (R-Rocket Gen2), or IoT (R-IoT Gen2).

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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Simon Horman Dec. 2, 2015, 12:26 a.m. UTC | #2
On Tue, Dec 01, 2015 at 09:41:49AM +0100, Geert Uytterhoeven wrote:
> On Tue, Dec 1, 2015 at 8:24 AM, Simon Horman <horms+renesas@verge.net.au> wrote:
> > Add fallback compatibility string for R-Car Gen 2 Family.
> > This is in keeping with the fallback scheme being adopted wherever
> > appropriate for drivers for Renesas SoCs.
> >
> > Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
> > ---
> >  Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt | 11 +++++++++--
> >  drivers/pci/host/pci-rcar-gen2.c                        |  1 +
> >  2 files changed, 10 insertions(+), 2 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt b/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
> > index 891463cb09c2..b19be08a8113 100644
> > --- a/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
> > +++ b/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
> > @@ -8,7 +8,14 @@ OHCI and EHCI controllers.
> >  Required properties:
> >  - compatible: "renesas,pci-r8a7790" for the R8A7790 SoC;
> >               "renesas,pci-r8a7791" for the R8A7791 SoC;
> > -             "renesas,pci-r8a7794" for the R8A7794 SoC.
> > +             "renesas,pci-r8a7794" for the R8A7794 SoC;
> > +             "renesas,pci-gen2" for a generic R-Car Gen2 compatible device.
> 
> Shouldn't that be "renesas,pci-rcar-gen" or "renesas,pci-rcar2"?
> 
> Else you'll be in trouble when Renesas starts focussing on airplanes
> (R-Plane Gen2), rockets (R-Rocket Gen2), or IoT (R-IoT Gen2).

Point taken.

I think renesas,pci-rcar-gen2 should work well enough.
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diff mbox

Patch

diff --git a/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt b/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
index 891463cb09c2..b19be08a8113 100644
--- a/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
+++ b/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
@@ -8,7 +8,14 @@  OHCI and EHCI controllers.
 Required properties:
 - compatible: "renesas,pci-r8a7790" for the R8A7790 SoC;
 	      "renesas,pci-r8a7791" for the R8A7791 SoC;
-	      "renesas,pci-r8a7794" for the R8A7794 SoC.
+	      "renesas,pci-r8a7794" for the R8A7794 SoC;
+	      "renesas,pci-gen2" for a generic R-Car Gen2 compatible device.
+
+
+	      When compatible with the generic version, nodes must list the
+	      SoC-specific version corresponding to the platform first
+	      followed by the generic version.
+
 - reg:	A list of physical regions to access the device: the first is
 	the operational registers for the OHCI/EHCI controllers and the
 	second is for the bridge configuration and control registers.
@@ -32,7 +39,7 @@  Optional properties:
 Example SoC configuration:
 
 	pci0: pci@ee090000  {
-		compatible = "renesas,pci-r8a7790";
+		compatible = "renesas,pci-r8a7790", "renesas,pci-gen2";
 		clocks = <&mstp7_clks R8A7790_CLK_EHCI>;
 		reg = <0x0 0xee090000 0x0 0xc00>,
 		      <0x0 0xee080000 0x0 0x1100>;
diff --git a/drivers/pci/host/pci-rcar-gen2.c b/drivers/pci/host/pci-rcar-gen2.c
index 62951165dcbb..a93403823353 100644
--- a/drivers/pci/host/pci-rcar-gen2.c
+++ b/drivers/pci/host/pci-rcar-gen2.c
@@ -430,6 +430,7 @@  static int rcar_pci_probe(struct platform_device *pdev)
 }
 
 static struct of_device_id rcar_pci_of_match[] = {
+	{ .compatible = "renesas,pci-gen2", },
 	{ .compatible = "renesas,pci-r8a7790", },
 	{ .compatible = "renesas,pci-r8a7791", },
 	{ .compatible = "renesas,pci-r8a7794", },