linux-kernel - Re: [PATCH v2 2/3] dt-bindings: rng: update bindings for MediaTek ARMv8 SoCs

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Date:   Thu, 30 May 2019 15:56:55 -0700
From:   Sean Wang <sean.wang@...nel.org>
To:     Neal Liu <neal.liu@...iatek.com>
Cc:     Matt Mackall <mpm@...enic.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-crypto@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        lkml <linux-kernel@...r.kernel.org>, wsd_upstream@...iatek.com,
        Crystal Guo <Crystal.Guo@...iatek.com>
Subject: Re: [PATCH v2 2/3] dt-bindings: rng: update bindings for MediaTek
 ARMv8 SoCs

Hi, Neal

On Mon, May 27, 2019 at 1:39 AM Neal Liu <neal.liu@...iatek.com> wrote:
>
> Document the binding used by the MediaTek ARMv8 SoCs random
> number generator with TrustZone enabled.
>
> Signed-off-by: Neal Liu <neal.liu@...iatek.com>
> ---
>  Documentation/devicetree/bindings/rng/mtk-rng.txt |   13 ++++++++++---
>  1 file changed, 10 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/rng/mtk-rng.txt b/Documentation/devicetree/bindings/rng/mtk-rng.txt
> index 2bc89f1..1fb9b1d 100644
> --- a/Documentation/devicetree/bindings/rng/mtk-rng.txt
> +++ b/Documentation/devicetree/bindings/rng/mtk-rng.txt
> @@ -3,9 +3,12 @@ found in MediaTek SoC family
>
>  Required properties:
>  - compatible       : Should be
> -                       "mediatek,mt7622-rng",  "mediatek,mt7623-rng" : for MT7622
> -                       "mediatek,mt7629-rng",  "mediatek,mt7623-rng" : for MT7629
> -                       "mediatek,mt7623-rng" : for MT7623
> +                       "mediatek,mt7622-rng", "mediatek,mt7623-rng" for MT7622
> +                       "mediatek,mt7629-rng", "mediatek,mt7623-rng" for MT7629
> +                       "mediatek,mt7623-rng" for MT7623

No make any change for those lines not belong to the series

> +                       "mediatek,mtk-sec-rng" for MediaTek ARMv8 SoCs

I thought "mediatek,mtk-sec-rng" is only for those MediaTek ARMv8 SoCs
with security RNG

> +
> +Optional properties:
>  - clocks           : list of clock specifiers, corresponding to
>                       entries in clock-names property;
>  - clock-names      : Should contain "rng" entries;
> @@ -19,3 +22,7 @@ rng: rng@...0f000 {
>         clocks = <&infracfg CLK_INFRA_TRNG>;
>         clock-names = "rng";
>  };

For those MediaTek ARMv8 SoCs with security RNG

> +
> +hwrng: hwrng {
> +       compatible = "mediatek,mtk-sec-rng";
> +};
> --
> 1.7.9.5
>