linux-kernel - [PATCH v4 0/4] Add support for stm32mp25x RNG

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241016-rng-mp25-v2-v4-0-5dca590cb092@foss.st.com>
Date: Wed, 16 Oct 2024 10:04:17 +0200
From: Gatien Chevallier <gatien.chevallier@...s.st.com>
To: Olivia Mackall <olivia@...enic.com>,
        Herbert Xu
	<herbert@...dor.apana.org.au>,
        Rob Herring <robh@...nel.org>,
        Krzysztof
 Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Maxime
 Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue
	<alexandre.torgue@...s.st.com>,
        Lionel Debieve <lionel.debieve@...s.st.com>, <marex@...x.de>
CC: <linux-crypto@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        Gatien Chevallier <gatien.chevallier@...s.st.com>
Subject: [PATCH v4 0/4] Add support for stm32mp25x RNG

This patchset adds support for the Random Number
Generator(RNG) present on the stm32mp25x platforms.
On these platforms, the clock management and the RNG
parameters are different.

While there, update the RNG max clock frequency on
stm32mp15 platforms according to the latest specs.

Tested on the stm32mp257f-ev1 platform with a deep
power sequence with rngtest before/after the sequence with
satisfying results.

Same was done on stm32mp135f-dk to make sure no regression was added.

On stm32mp157c-dk2, I didn't perform a power sequence but the rngtest
results were satisfying.

Signed-off-by: Gatien Chevallier <gatien.chevallier@...s.st.com>
---
Changes in v4:
- Changed the restrictions on clock names per compatible
- Link to v3: https://lore.kernel.org/r/20241015-rng-mp25-v2-v3-0-87630d73e5eb@foss.st.com

Changes in v3:
- Add restriction on clock-names some compatibles
- Use clk_bulk APIs in the RNG driver to avoid manually handling clocks.
- Link to v2: https://lore.kernel.org/r/20241011-rng-mp25-v2-v2-0-76fd6170280c@foss.st.com

Changes in V2:
	-Fixes in bindings
	-Removed MP25 RNG example
	-Renamed RNG clocks for mp25 to "core" and "bus"

---
Gatien Chevallier (4):
      dt-bindings: rng: add st,stm32mp25-rng support
      hwrng: stm32 - implement support for STM32MP25x platforms
      hwrng: stm32 - update STM32MP15 RNG max clock frequency
      arm64: dts: st: add RNG node on stm32mp251

 .../devicetree/bindings/rng/st,stm32-rng.yaml      | 28 +++++++-
 arch/arm64/boot/dts/st/stm32mp251.dtsi             | 10 +++
 drivers/char/hw_random/stm32-rng.c                 | 76 ++++++++++++++++------
 3 files changed, 94 insertions(+), 20 deletions(-)
---
base-commit: 8e929cb546ee42c9a61d24fae60605e9e3192354
change-id: 20241011-rng-mp25-v2-b6460ef11e1f

Best regards,
-- 
Gatien Chevallier <gatien.chevallier@...s.st.com>