linux-kernel - Re: [PATCH 1/3] dt-bindings: mailbox: fix the mpfs' reg property

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Date:   Fri, 5 Aug 2022 13:01:00 +0000
From:   <Conor.Dooley@...rochip.com>
To:     <Conor.Dooley@...rochip.com>, <jassisinghbrar@...il.com>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>
CC:     <Daire.McNamara@...rochip.com>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-riscv@...ts.infradead.org>
Subject: Re: [PATCH 1/3] dt-bindings: mailbox: fix the mpfs' reg property

On 05/08/2022 13:56, Conor Dooley wrote:
> The "data" region of the PolarFire SoC's system controller mailbox is
> not one continuous register space - the system controller's QSPI sits
> between the control and data registers. Split the "data" reg into two
> parts: "data" & "control".
> 
> Fixes: 213556235526 ("dt-bindings: soc/microchip: update syscontroller compatibles")

I omitted the second fixes tag:
Fixes: ed9543d6f2c4 ("dt-bindings: add bindings for polarfire soc mailbox")

> Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
> ---
>   .../bindings/mailbox/microchip,mpfs-mailbox.yaml  | 15 +++++++++++----
>   1 file changed, 11 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/mailbox/microchip,mpfs-mailbox.yaml b/Documentation/devicetree/bindings/mailbox/microchip,mpfs-mailbox.yaml
> index 082d397d3e89..935937c67133 100644
> --- a/Documentation/devicetree/bindings/mailbox/microchip,mpfs-mailbox.yaml
> +++ b/Documentation/devicetree/bindings/mailbox/microchip,mpfs-mailbox.yaml
> @@ -14,9 +14,15 @@ properties:
>       const: microchip,mpfs-mailbox
>   
>     reg:
> -    items:
> -      - description: mailbox data registers
> -      - description: mailbox interrupt registers
> +    oneOf:
> +      - items:
> +          - description: mailbox control & data registers
> +          - description: mailbox interrupt registers
> +        deprecated: true
> +      - items:
> +          - description: mailbox control registers
> +          - description: mailbox interrupt registers
> +          - description: mailbox data registers
>   
>     interrupts:
>       maxItems: 1
> @@ -39,7 +45,8 @@ examples:
>         #size-cells = <2>;
>         mbox: mailbox@...20000 {
>           compatible = "microchip,mpfs-mailbox";
> -        reg = <0x0 0x37020000 0x0 0x1000>, <0x0 0x2000318c 0x0 0x40>;
> +        reg = <0x0 0x37020000 0x0 0x58>, <0x0 0x2000318C 0x0 0x40>,
> +              <0x0 0x37020800 0x0 0x100>;
>           interrupt-parent = <&L1>;
>           interrupts = <96>;
>           #mbox-cells = <1>;