From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: Re: [PATCH v3 2/3] dt-bindings: rng: update bindings for MediaTek ARMv8 SoCs Date: Tue, 11 Jun 2019 16:53:51 -0600 Message-ID: <20190611225351.GA17332@bogus> References: <1560162984-26104-1-git-send-email-neal.liu@mediatek.com> <1560162984-26104-3-git-send-email-neal.liu@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1560162984-26104-3-git-send-email-neal.liu@mediatek.com> Sender: linux-kernel-owner@vger.kernel.org To: Neal Liu Cc: Matt Mackall , Herbert Xu , Mark Rutland , Matthias Brugger , Sean Wang , linux-crypto@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, wsd_upstream@mediatek.com, Crystal Guo List-Id: devicetree@vger.kernel.org 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 > --- > 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 >