linux-kernel - Re: [PATCH v4 02/12] dt-bindings: PCI: brcmstb: Add 7712 SoC description

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Message-ID: <CA+-6iNxuJQEKA_BfLiaG6FfJJdsjV1u+Lv5Knna1KhnMX=Meew@mail.gmail.com>
Date: Tue, 23 Jul 2024 17:03:30 -0400
From: Jim Quinlan <james.quinlan@...adcom.com>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: linux-pci@...r.kernel.org, Nicolas Saenz Julienne <nsaenz@...nel.org>, 
	Bjorn Helgaas <bhelgaas@...gle.com>, Lorenzo Pieralisi <lorenzo.pieralisi@....com>, 
	Cyril Brulebois <kibi@...ian.org>, Stanimir Varbanov <svarbanov@...e.de>, 
	bcm-kernel-feedback-list@...adcom.com, jim2101024@...il.com, 
	Florian Fainelli <florian.fainelli@...adcom.com>, Lorenzo Pieralisi <lpieralisi@...nel.org>, 
	Krzysztof Wilczyński <kw@...ux.com>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	"moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE" <linux-rpi-kernel@...ts.infradead.org>, 
	"moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE" <linux-arm-kernel@...ts.infradead.org>, 
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" <devicetree@...r.kernel.org>, open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 02/12] dt-bindings: PCI: brcmstb: Add 7712 SoC description

On Wed, Jul 17, 2024 at 2:53 AM Krzysztof Kozlowski <krzk@...nel.org> wrote:
>
> On 16/07/2024 23:31, Jim Quinlan wrote:
> > This adds the description for the 7712 SoC, a Broadcom
> > STB sibling chip of the RPi 5.  Two new reset controllers
> > are described.
> >
> > Signed-off-by: Jim Quinlan <james.quinlan@...adcom.com>
> > ---
> >  .../bindings/pci/brcm,stb-pcie.yaml           | 26 +++++++++++++++++++
> >  1 file changed, 26 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml b/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
> > index 692f7ed7c98e..90683a0df2c5 100644
> > --- a/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
> > +++ b/Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
> > @@ -21,6 +21,7 @@ properties:
> >            - brcm,bcm7425-pcie # Broadcom 7425 MIPs
> >            - brcm,bcm7435-pcie # Broadcom 7435 MIPs
> >            - brcm,bcm7445-pcie # Broadcom 7445 Arm
> > +          - brcm,bcm7712-pcie # Broadcom STB sibling of Rpi 5
> >
> >    reg:
> >      maxItems: 1
> > @@ -100,12 +101,16 @@ properties:
> >      items:
> >        - description: reset for external PCIe PERST# signal # perst
> >        - description: reset for phy reset calibration       # rescal
> > +      - description: reset for PCIe/CPU bus bridge         # bridge
> > +      - description: reset for soft PCIe core reset        # swinit
> >
> >    reset-names:
> >      minItems: 1
> >      items:
> >        - const: perst
> >        - const: rescal
> > +      - const: bridge
> > +      - const: swinit
>
> This does not match at all what you have in allOf:if:then section.
>
> >
> >  required:
> >    - compatible
> > @@ -159,6 +164,27 @@ allOf:
> >          - resets
> >          - reset-names
> >
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            const: brcm,bcm7712-pcie
> > +    then:
> > +      properties:
> > +        resets:
> > +          minItems: 3
> > +          maxItems: 3
> > +
> > +        reset-names:
> > +          items:
> > +            - const: rescal
>
> Look - here it is rescal. Before you said it must be perst.
>
> https://elixir.bootlin.com/linux/v6.8/source/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml#L132

Hello Krzysztof,

The difference between my commits and the above example is that the
above example has no "desc" line(s) to describe the clocks  -- How
would you add this?  Or are you okay with (a) no description or (b)
using a "#comment..." next to the clock's name?

Regards,
Jim Quinlan
Broadcom STB/CM
>
> Best regards,
> Krzysztof
>

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