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[01/12] dt-bindings: PCI: snps,dw-pcie-ep: Add vendor specific reg-name

Message ID 20240424-rockchip-pcie-ep-v1-v1-1-b1a02ddad650@kernel.org (mailing list archive)
State New
Headers show
Series PCI: dw-rockchip: Add endpoint mode support | expand

Commit Message

Niklas Cassel April 24, 2024, 3:16 p.m. UTC
Considering that some drivers (e.g. pcie-dw-rockchip.c) already use the
reg-name "apb" for the device tree binding in Root Complex mode
(snps,dw-pcie.yaml), it doesn't make sense that those drivers should use a
different reg-name when running in Endpoint mode (snps,dw-pcie-ep.yaml).

Therefore, since "apb" is already defined in snps,dw-pcie.yaml, add it
also for snps,dw-pcie-ep.yaml.

Signed-off-by: Niklas Cassel <cassel@kernel.org>
---
 Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Rob Herring April 25, 2024, 3:49 p.m. UTC | #1
On Wed, Apr 24, 2024 at 05:16:19PM +0200, Niklas Cassel wrote:
> Considering that some drivers (e.g. pcie-dw-rockchip.c) already use the
> reg-name "apb" for the device tree binding in Root Complex mode
> (snps,dw-pcie.yaml), it doesn't make sense that those drivers should use a
> different reg-name when running in Endpoint mode (snps,dw-pcie-ep.yaml).
> 
> Therefore, since "apb" is already defined in snps,dw-pcie.yaml, add it
> also for snps,dw-pcie-ep.yaml.
> 
> Signed-off-by: Niklas Cassel <cassel@kernel.org>
> ---
>  Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml
> index bbdb01d22848..00dec01f1f73 100644
> --- a/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml
> +++ b/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml
> @@ -100,7 +100,7 @@ properties:
>              for new bindings.
>            oneOf:
>              - description: See native 'elbi/app' CSR region for details.
> -              enum: [ link, appl ]
> +              enum: [ apb, link, appl ]

This section is for existing bindings. IOW, don't use or add to them 
for new users. New users should "See native 'elbi/app' CSR region".

Rob
Rob Herring April 25, 2024, 3:54 p.m. UTC | #2
On Thu, Apr 25, 2024 at 10:49:28AM -0500, Rob Herring wrote:
> On Wed, Apr 24, 2024 at 05:16:19PM +0200, Niklas Cassel wrote:
> > Considering that some drivers (e.g. pcie-dw-rockchip.c) already use the
> > reg-name "apb" for the device tree binding in Root Complex mode
> > (snps,dw-pcie.yaml), it doesn't make sense that those drivers should use a
> > different reg-name when running in Endpoint mode (snps,dw-pcie-ep.yaml).
> > 
> > Therefore, since "apb" is already defined in snps,dw-pcie.yaml, add it
> > also for snps,dw-pcie-ep.yaml.
> > 
> > Signed-off-by: Niklas Cassel <cassel@kernel.org>
> > ---
> >  Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml
> > index bbdb01d22848..00dec01f1f73 100644
> > --- a/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml
> > +++ b/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml
> > @@ -100,7 +100,7 @@ properties:
> >              for new bindings.
> >            oneOf:
> >              - description: See native 'elbi/app' CSR region for details.
> > -              enum: [ link, appl ]
> > +              enum: [ apb, link, appl ]
> 
> This section is for existing bindings. IOW, don't use or add to them 
> for new users. New users should "See native 'elbi/app' CSR region".

Err, I guess this is an existing user for the most part.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml
index bbdb01d22848..00dec01f1f73 100644
--- a/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml
+++ b/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml
@@ -100,7 +100,7 @@  properties:
             for new bindings.
           oneOf:
             - description: See native 'elbi/app' CSR region for details.
-              enum: [ link, appl ]
+              enum: [ apb, link, appl ]
             - description: See native 'atu' CSR region for details.
               enum: [ atu_dma ]
     allOf: