linux-kernel - [PATCH RFT/RFC 0/2] mfd: cs42l43: fix GPIO lookup for chip selects

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: <20251119-cs42l43-gpio-lookup-v1-0-029b1d9e1843@linaro.org>
Date: Wed, 19 Nov 2025 16:21:27 +0100
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, David Rhodes <david.rhodes@...rus.com>, 
 Richard Fitzgerald <rf@...nsource.cirrus.com>, Lee Jones <lee@...nel.org>, 
 Mark Brown <broonie@...nel.org>, 
 Maciej Strozek <mstrozek@...nsource.cirrus.com>, 
 Charles Keepax <ckeepax@...nsource.cirrus.com>, 
 Andy Shevchenko <andy@...nel.org>, Philipp Zabel <p.zabel@...gutronix.de>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-sound@...r.kernel.org, patches@...nsource.cirrus.com, 
 linux-spi@...r.kernel.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH RFT/RFC 0/2] mfd: cs42l43: fix GPIO lookup for chip selects

It wouldn't leave me alone, so here's a proposal to address the software
node issue of this driver using GPIO lookups.

Link to the previous idea:
  https://lore.kernel.org/all/20251119-cs42l43-gpio-swnodes-v1-1-25996afebd97@linaro.org/

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
Bartosz Golaszewski (2):
      gpiolib: support "undefined" GPIO machine lookup
      mfd: cs42l43: use GPIO machine lookup for cs-gpios

 drivers/gpio/gpiolib.c    |  3 +++
 drivers/mfd/cs42l43.c     | 23 +++++++++++++++++++++++
 drivers/spi/spi-cs42l43.c | 35 -----------------------------------
 3 files changed, 26 insertions(+), 35 deletions(-)
---
base-commit: fe4d0dea039f2befb93f27569593ec209843b0f5
change-id: 20251119-cs42l43-gpio-lookup-3e3509bed0b3

Best regards,
-- 
Bartosz Golaszewski <bartosz.golaszewski@...aro.org>