diff mbox series

[RFC/RFT,v2,05/11] dt-bindings: pci: add bifurcation option to Rockchip DesignWare binding

Message ID 20220426132139.26761-6-linux@fw-web.de (mailing list archive)
State New
Headers show
Series RK3568 PCIe V3 support | expand

Commit Message

Frank Wunderlich April 26, 2022, 1:21 p.m. UTC
From: Frank Wunderlich <frank-w@public-files.de>

Add bifurcation property for splitting PCIe lanes.

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
---
 Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml | 2 ++
 1 file changed, 2 insertions(+)

Comments

Krzysztof Kozlowski April 28, 2022, 6:37 a.m. UTC | #1
On 26/04/2022 15:21, Frank Wunderlich wrote:
> From: Frank Wunderlich <frank-w@public-files.de>
> 
> Add bifurcation property for splitting PCIe lanes.
> 
> Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
> ---
>  Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
> index bc0a9d1db750..a992970e8b85 100644
> --- a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
> +++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
> @@ -74,6 +74,8 @@ properties:
>    reset-names:
>      const: pipe
>  
> +  bifurcation: true
> +

Does not look like standard property. Is it already defined somewhere?
All non-standard properties need vendor, type and description.


Best regards,
Krzysztof
Frank Wunderlich April 28, 2022, 7:25 a.m. UTC | #2
Hi
> Gesendet: Donnerstag, 28. April 2022 um 08:37 Uhr
> Von: "Krzysztof Kozlowski" <krzysztof.kozlowski@linaro.org>
> On 26/04/2022 15:21, Frank Wunderlich wrote:
> > From: Frank Wunderlich <frank-w@public-files.de>
> >
> > Add bifurcation property for splitting PCIe lanes.
> >
> > Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
> > ---
> >  Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
> > index bc0a9d1db750..a992970e8b85 100644
> > --- a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
> > +++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
> > @@ -74,6 +74,8 @@ properties:
> >    reset-names:
> >      const: pipe
> >
> > +  bifurcation: true
> > +
>
> Does not look like standard property. Is it already defined somewhere?
> All non-standard properties need vendor, type and description.

have removed vendor-prefix from v1>v2 based on suggestion this can be useful for other vendors too.

but last 3 patches of this series replacing bifurcation property (which is only bool) by the more useful lane-map (left alone for discussion, will be squashed if the right way is found).

i guess same here, description+type needed, but how to describe an array of int in yaml? do you know any examples?

regards Frank
Krzysztof Kozlowski April 28, 2022, 7:28 a.m. UTC | #3
On 28/04/2022 09:25, Frank Wunderlich wrote:
> 
> i guess same here, description+type needed, but how to describe an array of int in yaml? do you know any examples?

https://elixir.bootlin.com/linux/v5.17-rc4/source/Documentation/devicetree/bindings/arm/l2c2x0.yaml#L74
https://elixir.bootlin.com/linux/latest/source/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml#L101

Best regards,
Krzysztof
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
index bc0a9d1db750..a992970e8b85 100644
--- a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
@@ -74,6 +74,8 @@  properties:
   reset-names:
     const: pipe
 
+  bifurcation: true
+
   vpcie3v3-supply: true
 
 required: