linux-kernel - Re: [PATCH 2/2] dt-bindings: fpga: altera: Convert bridge bindings to yaml

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Date: Tue, 9 Jan 2024 12:04:56 +0800
From: Xu Yilun <yilun.xu@...ux.intel.com>
To: Michal Simek <michal.simek@....com>
Cc: linux-kernel@...r.kernel.org, monstr@...str.eu, michal.simek@...inx.com,
	git@...inx.com, Conor Dooley <conor+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Moritz Fischer <mdf@...nel.org>, Rob Herring <robh+dt@...nel.org>,
	Tom Rix <trix@...hat.com>, Wu Hao <hao.wu@...el.com>,
	Xu Yilun <yilun.xu@...el.com>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" <devicetree@...r.kernel.org>,
	"open list:FPGA MANAGER FRAMEWORK" <linux-fpga@...r.kernel.org>
Subject: Re: [PATCH 2/2] dt-bindings: fpga: altera: Convert bridge bindings
 to yaml

On Mon, Jan 08, 2024 at 09:12:21AM +0100, Michal Simek wrote:
> 
> 
> On 1/8/24 08:46, Xu Yilun wrote:
> > On Fri, Jan 05, 2024 at 05:04:31PM +0100, Michal Simek wrote:
> > > Convert Altera's bridges to yaml with using fpga-bridge.yaml.
> > > 
> > > Signed-off-by: Michal Simek <michal.simek@....com>
> > > ---
> > > 
> > >   .../fpga/altera-fpga2sdram-bridge.txt         | 13 ----
> > >   .../fpga/altera-fpga2sdram-bridge.yaml        | 34 ++++++++++
> > >   .../bindings/fpga/altera-freeze-bridge.txt    | 20 ------
> > >   .../bindings/fpga/altera-freeze-bridge.yaml   | 41 ++++++++++++
> > >   .../bindings/fpga/altera-hps2fpga-bridge.txt  | 36 -----------
> > >   .../bindings/fpga/altera-hps2fpga-bridge.yaml | 63 +++++++++++++++++++
> > >   6 files changed, 138 insertions(+), 69 deletions(-)
> > >   delete mode 100644 Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.txt
> > >   create mode 100644 Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.yaml
> > >   delete mode 100644 Documentation/devicetree/bindings/fpga/altera-freeze-bridge.txt
> > >   create mode 100644 Documentation/devicetree/bindings/fpga/altera-freeze-bridge.yaml
> > >   delete mode 100644 Documentation/devicetree/bindings/fpga/altera-hps2fpga-bridge.txt
> > >   create mode 100644 Documentation/devicetree/bindings/fpga/altera-hps2fpga-bridge.yaml
> > > 
> > > diff --git a/Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.txt b/Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.txt
> > > deleted file mode 100644
> > > index 5dd0ff0f7b4e..000000000000
> > > --- a/Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.txt
> > > +++ /dev/null
> > > @@ -1,13 +0,0 @@
> > > -Altera FPGA To SDRAM Bridge Driver
> > > -
> > > -Required properties:
> > > -- compatible		: Should contain "altr,socfpga-fpga2sdram-bridge"
> > > -
> > > -See Documentation/devicetree/bindings/fpga/fpga-bridge.txt for generic bindings.
> > > -
> > > -Example:
> > > -	fpga_bridge3: fpga-bridge@...25080 {
> > > -		compatible = "altr,socfpga-fpga2sdram-bridge";
> > > -		reg = <0xffc25080 0x4>;
> > > -		bridge-enable = <0>;
> > > -	};
> > > diff --git a/Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.yaml b/Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.yaml
> > > new file mode 100644
> > > index 000000000000..a3f3fe2729f2
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.yaml
> > > @@ -0,0 +1,34 @@
> > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > > +%YAML 1.2
> > > +---
> > > +$id: http://devicetree.org/schemas/fpga/altera-fpga2sdram-bridge.yaml#
> > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > +
> > > +title: Altera FPGA To SDRAM Bridge
> > > +
> > > +maintainers:
> > > +  - Xu Yilun <yilun.xu@...el.com>
> > > +
> > > +allOf:
> > > +  - $ref: fpga-bridge.yaml#
> > > +
> > > +properties:
> > > +  compatible:
> > > +    const: altr,socfpga-fpga2sdram-bridge
> > > +
> > > +  reg:
> > > +    maxItems: 1
> > > +
> > > +required:
> > > +  - compatible
> > > +  - reg
> > 
> > Is the 'reg' required? I didn't see it in original txt.
> 
> you tell me. It was in example that's why I made it mandatory.

In original txt, 'reg' is not listed as required but in Example. I
searched the code but didn't see 'reg' useful. So lets delete it
from 'required:'

Thanks,
Yilun