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

From: Diederik de Haas <didi.debian@cknow.org>
To: wens@kernel.org
Cc: "Daniel Golle" <daniel@makrotopia.org>,
	linux-rockchip@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	"Rob Herring" <robh@kernel.org>,
	"Conor Dooley" <conor+dt@kernel.org>,
	linux-kernel@vger.kernel.org,
	"Herbert Xu" <herbert@gondor.apana.org.au>,
	"Martin Kaiser" <martin@kaiser.cx>,
	"Sascha Hauer" <s.hauer@pengutronix.de>,
	"Sebastian Reichel" <sebastian.reichel@collabora.com>,
	"Ard Biesheuvel" <ardb@kernel.org>,
	"Uwe Kleine-König" <ukleinek@debian.org>,
	devicetree@vger.kernel.org, linux-crypto@vger.kernel.org,
	"Philipp Zabel" <p.zabel@pengutronix.de>,
	"Olivia Mackall" <olivia@selenic.com>,
	"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
	"Dragan Simic" <dsimic@manjaro.org>,
	"Aurelien Jarno" <aurelien@aurel32.net>,
	"Heiko Stuebner" <heiko@sntech.de>,
	"Anand Moon" <linux.amoon@gmail.com>
Subject: Re: [PATCH v7 0/3] hwrng: add hwrng support for Rockchip RK3568
Date: Wed, 17 Jul 2024 10:49:27 +0200	[thread overview]
Message-ID: <1980864.2la4r23YhA@bagend> (raw)
In-Reply-To: <CAGb2v65BaN3rDGA+9D4mAoz4+7C4CfSqhEhd81ev-BViy0tEbw@mail.gmail.com>

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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@cs21:~# 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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