RE: [PATCH v2 1/6] dt-bindings: Document the SYSREG specific compatibles found on FSD SoC

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> -----Original Message-----
> From: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
> Sent: 09 November 2022 16:39
> To: Vivek Yadav <vivek.2311@xxxxxxxxxxx>; rcsekar@xxxxxxxxxxx;
> krzysztof.kozlowski+dt@xxxxxxxxxx; wg@xxxxxxxxxxxxxx;
> mkl@xxxxxxxxxxxxxx; davem@xxxxxxxxxxxxx; edumazet@xxxxxxxxxx;
> kuba@xxxxxxxxxx; pabeni@xxxxxxxxxx; pankaj.dubey@xxxxxxxxxxx;
> ravi.patel@xxxxxxxxxxx; alim.akhtar@xxxxxxxxxxx; linux-fsd@xxxxxxxxx;
> robh+dt@xxxxxxxxxx
> Cc: linux-can@xxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux-
> samsung-soc@xxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx;
> aswani.reddy@xxxxxxxxxxx; sriranjani.p@xxxxxxxxxxx
> Subject: Re: [PATCH v2 1/6] dt-bindings: Document the SYSREG specific
> compatibles found on FSD SoC
> 
> On 09/11/2022 11:09, Vivek Yadav wrote:
> > From: Sriranjani P <sriranjani.p@xxxxxxxxxxx>
> >
> 
> Use subject prefixes matching the subsystem (git log --oneline -- ...).
> 
Okay, I will add the correct prefixes.
> > Describe the compatible properties for SYSREG controllers found on FSD
> > SoC.
> 
> This is ARM SoC patch, split it from the patchset.
>
I understand this patch is not to be subset of CAN patches, I will send these patches separately.
These patches will be used by EQos patches. As per reference, I am adding the Address link.
https://lore.kernel.org/all/20221104120517.77980-1-sriranjani.p@xxxxxxxxxxx/
 
> >
> > Signed-off-by: Alim Akhtar <alim.akhtar@xxxxxxxxxxx>
> > Signed-off-by: Pankaj Kumar Dubey <pankaj.dubey@xxxxxxxxxxx>
> > Signed-off-by: Ravi Patel <ravi.patel@xxxxxxxxxxx>
> > Signed-off-by: Vivek Yadav <vivek.2311@xxxxxxxxxxx>
> > Cc: devicetree@xxxxxxxxxxxxxxx
> > Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx>
> > Cc: Rob Herring <robh+dt@xxxxxxxxxx>
> 
> Drop the Cc list from commit log. It's not helpful.
> 
Okay, I will remove.
> > Signed-off-by: Sriranjani P <sriranjani.p@xxxxxxxxxxx>
> > ---
> >  .../devicetree/bindings/arm/tesla-sysreg.yaml | 50
> +++++++++++++++++++
> >  MAINTAINERS                                   |  1 +
> >  2 files changed, 51 insertions(+)
> >  create mode 100644
> > Documentation/devicetree/bindings/arm/tesla-sysreg.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/arm/tesla-sysreg.yaml
> > b/Documentation/devicetree/bindings/arm/tesla-sysreg.yaml
> > new file mode 100644
> > index 000000000000..bbcc6dd75918
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/arm/tesla-sysreg.yaml
> 
> arm is only for top level stuff. This goes to soc under tesla or samsung
> directory.
> 
Okay, this is specific to Samsung fsd SoC, I will be moving this file to arm/samsung in next patch series. Hope that is fine.
> > @@ -0,0 +1,50 @@
> > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause %YAML 1.2
> > +---
> > +$id:
> > +https://protect2.fireeye.com/v1/url?k=1ad2834a-7b59967c-1ad30805-
> 000b
> > +abff9b5d-1f65584e412e916c&q=1&e=a870a282-632a-4896-ae53-
> 3ecb50f02be5&
> > +u=http%3A%2F%2Fdevicetree.org%2Fschemas%2Farm%2Ftesla-
> sysreg.yaml%23
> > +$schema:
> > +https://protect2.fireeye.com/v1/url?k=13876e33-720c7b05-1386e57c-
> 000b
> > +abff9b5d-edae3ff711999305&q=1&e=a870a282-632a-4896-ae53-
> 3ecb50f02be5&
> > +u=http%3A%2F%2Fdevicetree.org%2Fmeta-schemas%2Fcore.yaml%23
> > +
> > +title: Tesla Full Self-Driving platform's system registers
> > +
> > +maintainers:
> > +  - Alim Akhtar <alim.akhtar@xxxxxxxxxxx>
> > +
> > +description: |
> > +  This is a system control registers block, providing multiple low
> > +level
> > +  platform functions like board detection and identification,
> > +software
> > +  interrupt generation.
> > +
> > +properties:
> > +  compatible:
> > +    oneOf:
> 
> No need for oneOf.
> 
Removing this results into dt_binding_check error, so this is required.
> > +      - items:
> > +          - enum:
> > +              - tesla,sysreg_fsys0
> > +              - tesla,sysreg_peric
> 
> From where did you get underscores in compatibles?
> 
I have seen in MCAN Driver <drivers/net/can/m_can/m_can_platform.c> and also too many other yaml files.
Do you have any ref standard guideline of compatible which says underscore is not allowed.
> > +          - const: syscon
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    soc {
> > +      #address-cells = <2>;
> > +      #size-cells = <2>;
> > +
> > +      sysreg_fsys0: system-controller@15030000 {
> > +            compatible = "tesla,sysreg_fsys0", "syscon";
> 
> Use 4 spaces for example indentation.
> 
Okay I will make it 4 spaces indentation.
> > +            reg = <0x0 0x15030000 0x0 0x1000>;
> > +      };
> > +
> > +      sysreg_peric: system-controller@14030000 {
> > +            compatible = "tesla,sysreg_peric", "syscon";
> > +            reg = <0x0 0x14030000 0x0 0x1000>;
> > +      };
> 
> One example is enough, they are the same.
kay  I will remove 1 example.
> > +    };
> > diff --git a/MAINTAINERS b/MAINTAINERS index
> > a198da986146..56995e7d63ad 100644
> > --- a/MAINTAINERS
> > +++ b/MAINTAINERS
> > @@ -2943,6 +2943,7 @@ M:	linux-fsd@xxxxxxxxx
> >  L:	linux-arm-kernel@xxxxxxxxxxxxxxxxxxx (moderated for non-
> subscribers)
> >  L:	linux-samsung-soc@xxxxxxxxxxxxxxx
> >  S:	Maintained
> > +F:	Documentation/devicetree/bindings/arm/tesla-sysreg.yaml
> >  F:	arch/arm64/boot/dts/tesla*
> >
> >  ARM/TETON BGA MACHINE SUPPORT
> 
> Best regards,
> Krzysztof

Thanks for reviewing the patches.






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