From: Rob Herring <robh@kernel.org>
To: Neal Liu <neal.liu@mediatek.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
devicetree@vger.kernel.org,
Herbert Xu <herbert@gondor.apana.org.au>,
wsd_upstream@mediatek.com, Sean Wang <sean.wang@kernel.org>,
linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org,
linux-crypto@vger.kernel.org, Matt Mackall <mpm@selenic.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Crystal Guo <Crystal.Guo@mediatek.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 2/3] dt-bindings: rng: update bindings for MediaTek ARMv8 SoCs
Date: Tue, 11 Jun 2019 16:53:51 -0600 [thread overview]
Message-ID: <20190611225351.GA17332@bogus> (raw)
In-Reply-To: <1560162984-26104-3-git-send-email-neal.liu@mediatek.com>
On Mon, Jun 10, 2019 at 06:36:23PM +0800, Neal Liu wrote:
> Document the binding used by the MediaTek ARMv8 SoCs random
> number generator with TrustZone enabled.
>
> Signed-off-by: Neal Liu <neal.liu@mediatek.com>
> ---
> Documentation/devicetree/bindings/rng/mtk-rng.txt | 15 ++++++++++++---
> 1 file changed, 12 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/rng/mtk-rng.txt b/Documentation/devicetree/bindings/rng/mtk-rng.txt
> index 2bc89f1..fb3dd59 100644
> --- a/Documentation/devicetree/bindings/rng/mtk-rng.txt
> +++ b/Documentation/devicetree/bindings/rng/mtk-rng.txt
> @@ -3,9 +3,13 @@ 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
> + "mediatek,mtk-sec-rng" for MediaTek ARMv8 SoCs with
> + security RNG
Is there any commonality with the prior h/w? If not, make this a
separate binding doc.
> +
> +Optional properties:
> - clocks : list of clock specifiers, corresponding to
> entries in clock-names property;
> - clock-names : Should contain "rng" entries;
> @@ -19,3 +23,8 @@ rng: rng@1020f000 {
> clocks = <&infracfg CLK_INFRA_TRNG>;
> clock-names = "rng";
> };
> +
> +/* secure RNG */
> +hwrng: hwrng {
> + compatible = "mediatek,mtk-sec-rng";
How does one access this? Seems like this should be part of a node for
firmware? What about other functions?
> +};
> --
> 1.7.9.5
>
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next prev parent reply other threads:[~2019-06-11 22:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-10 10:36 [PATCH v3 0/3] MediaTek Security random number generator support Neal Liu
2019-06-10 10:36 ` [PATCH v3 1/3] soc: mediatek: add SMC fid table for SIP interface Neal Liu
2019-06-10 10:36 ` [PATCH v3 2/3] dt-bindings: rng: update bindings for MediaTek ARMv8 SoCs Neal Liu
2019-06-11 22:53 ` Rob Herring [this message]
2019-06-12 4:02 ` Neal Liu
2019-06-10 10:36 ` [PATCH v3 3/3] hwrng: add mtk-sec-rng driver Neal Liu
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