linux-kernel - [PATCH 0/2] Enable internal strobe pulldown on Radxa ROCK 4 SBCs

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]

Date: Wed, 27 Mar 2024 20:26:36 +0100
From: Folker Schwesinger <dev@...ker-schwesinger.de>
To: Vinod Koul <vkoul@...nel.org>,
	Yogesh Hegde <yogi.kernel@...il.com>,
	Heiko Stuebner <heiko@...ech.de>,
	Chris Ruehl <chris.ruehl@...ys.com.hk>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: Folker Schwesinger <dev@...ker-schwesinger.de>,
	Dragan Simic <dsimic@...jaro.org>,
	Christopher Obbard <chris.obbard@...labora.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: [PATCH 0/2] Enable internal strobe pulldown on Radxa ROCK 4 SBCs

Various RK3399 boards, including the ROCK Pi 4 series showed instabilities
with some eMMC modules when operating in HS400 mode [1]. Later, a missing
pull-down resistor on the eMMC strobe line was identified as the root
cause of these instabilities [2].

This series enables the internal pull-down on the eMMC PHY strobe line
for all ROCK 4 series boards as they all lack an external strobe
pull-down resistor.

Furthermore, HS400 mode is re-enabled for these boards. Previously, to
workaround the instabilities until the issue was investigated further,
HS400 mode was replaced with HS200 mode [1].

[1]: https://lore.kernel.org/all/20230705144255.115299-1-chris.obbard@collabora.com/
[2]: https://lore.kernel.org/all/20220822074139.3810-1-jensenhuang@friendlyarm.com/

Folker Schwesinger (2):
  arm64: dts: rockchip: Add enable-strobe-pulldown to emmc phy on ROCK
    Pi 4
  arm64: dts: rockchip: Add enable-strobe-pulldown to emmc phy on ROCK
    4C+

 arch/arm64/boot/dts/rockchip/rk3399-rock-4c-plus.dts | 4 +++-
 arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi   | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

base-commit: 4cece764965020c22cff7665b18a012006359095
-- 
2.44.0