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

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Message-ID: <e8b34f9e-5286-44aa-8bb8-88e5ff5c8255@kernel.org>
Date: Wed, 17 Jul 2024 08:52:56 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Jim Quinlan <james.quinlan@...adcom.com>, 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
Cc: 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 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

Best regards,
Krzysztof