linux-kernel - Re: [PATCH v7 0/3] hwrng: add hwrng support for Rockchip RK3568

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Message-ID: <1980864.2la4r23YhA@bagend>
Date: Wed, 17 Jul 2024 10:49:27 +0200
From: Diederik de Haas <didi.debian@...ow.org>
To: wens@...nel.org
Cc: Daniel Golle <daniel@...rotopia.org>, linux-rockchip@...ts.infradead.org,
 linux-arm-kernel@...ts.infradead.org, Rob Herring <robh@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, linux-kernel@...r.kernel.org,
 Herbert Xu <herbert@...dor.apana.org.au>, Martin Kaiser <martin@...ser.cx>,
 Sascha Hauer <s.hauer@...gutronix.de>,
 Sebastian Reichel <sebastian.reichel@...labora.com>,
 Ard Biesheuvel <ardb@...nel.org>,
 Uwe Kleine-König <ukleinek@...ian.org>,
 devicetree@...r.kernel.org, linux-crypto@...r.kernel.org,
 Philipp Zabel <p.zabel@...gutronix.de>, Olivia Mackall <olivia@...enic.com>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Dragan Simic <dsimic@...jaro.org>,
 Aurelien Jarno <aurelien@...el32.net>, Heiko Stuebner <heiko@...ech.de>,
 Anand Moon <linux.amoon@...il.com>
Subject: Re: [PATCH v7 0/3] hwrng: add hwrng support for Rockchip RK3568

On Wednesday, 17 July 2024 10:38:40 CEST Chen-Yu Tsai wrote:
> > On my Rock64('s) (RK3328) it doesn't work at all:
> > 
> > ```
> > root@...1:~# cat /dev/hwrng | rngtest -c 1000
> > rngtest 5
> > ...
> > rngtest: starting FIPS tests...
> > cat: /dev/hwrng: No such device
> > rngtest: entropy source drained
> > ```
> 
> RK3399 and RK3328 are covered by a different driver:
> 
> https://lore.kernel.org/all/20230707115242.3411259-1-clabbe@baylibre.com/
> 
> And that patch says the TRNG on the RK3328 is utterly broken.

Yeah, someone made me aware of that post and then ofc I had to see it for 
myself ;-)

Cheers,
  Diederik
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