linux-kernel - Re: [PATCH 2/5] dt-bindings: dma: dw: Add max burst transaction length property bindings

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 12 Mar 2020 16:33:30 -0500
From:   Rob Herring <robh@...nel.org>
To:     Sergey.Semin@...kalelectronics.ru
Cc:     Vinod Koul <vkoul@...nel.org>, Mark Rutland <mark.rutland@....com>,
        Serge Semin <fancer.lancer@...il.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Paul Burton <paulburton@...nel.org>,
        Ralf Baechle <ralf@...ux-mips.org>, dmaengine@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/5] dt-bindings: dma: dw: Add max burst transaction
 length property bindings

On Fri, Mar 06, 2020 at 04:10:31PM +0300, Sergey.Semin@...kalelectronics.ru wrote:
> From: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> 
> This array property is used to indicate the maximum burst transaction
> length supported by each DMA channel.
> 
> Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> Signed-off-by: Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>
> Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
> Cc: Paul Burton <paulburton@...nel.org>
> Cc: Ralf Baechle <ralf@...ux-mips.org>
> ---
>  .../devicetree/bindings/dma/snps,dma-spear1340.yaml  | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml b/Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml
> index d7f9383ceb8f..308ec6482064 100644
> --- a/Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml
> +++ b/Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml
> @@ -126,6 +126,18 @@ properties:
>            enum: [0, 1]
>            default: 0
>  
> +  snps,max-burst-len:
> +    description: |
> +      Maximum length of burst transactions supported by hardware.
> +      It's an array property with one cell per channel in units of
> +      CTLx register SRC_TR_WIDTH/DST_TR_WIDTH field.
> +    allOf:
> +      - $ref: /schemas/types.yaml#/definitions/uint32-array
> +      - maxItems: 8
> +        items:
> +          enum: [4, 8, 16, 32, 64, 128, 256]
> +          default: 0

The default needs to be an allowed value in the enum.

Rob