Messages in this thread | | | From | Geert Uytterhoeven <> | Date | Mon, 20 Apr 2020 15:45:28 +0200 | Subject | Re: [PATCH v7 0/3] hw_random: introduce Arm CryptoCell TRNG driver |
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Hi Hadar,
On Mon, Apr 20, 2020 at 2:27 PM Hadar Gat <Hadar.Gat@arm.com> wrote: > > From: Geert Uytterhoeven <geert@linux-m68k.org> > > Sent: Monday, 20 April 2020 12:35 > > > > On Fri, Mar 27, 2020 at 7:11 AM Hadar Gat <hadar.gat@arm.com> wrote: > > > The Arm CryptoCell is a hardware security engine. > > > This patch introduces driver for its TRNG (True Random Number > > > Generator) engine. > > > > Thanks for your series! > > > > I am wondering what is the relation between this and > > Documentation/devicetree/bindings/crypto/arm-cryptocell.txt? > > Arm TrustZone CryptoCell hardware contains both cryptographic engine (ccree) and true random number generator engine (cctrng).
OK.
> These are separate engines with some sharing in logic and interface.
Do they share the same register block?
> cctrng engine may not always be present.
I assume that applies to e.g. the older 630p?
> The devicetree documentation is in: > For ccree - Documentation/devicetree/bindings/crypto/arm-cryptocell.txt > For cctrng - Documentation/devicetree/bindings/rng/arm-cctrng.yaml
Thank you, I had already read both documents.
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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