linux-kernel - [PATCH 0/2] add support for gpio-usb-b-connector

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: <20250618212120.1548575-1-tharvey@gateworks.com>
Date: Wed, 18 Jun 2025 14:21:18 -0700
From: Tim Harvey <tharvey@...eworks.com>
To: Stefano Babic <sbabic@...x.de>,
	Fabio Estevam <festevam@...il.com>,
	"NXP i.MX U-Boot Team" <uboot-imx@....com>,
	Tim Harvey <tharvey@...eworks.com>,
	Tom Rini <trini@...sulko.com>,
	Marek Vasut <marex@...x.de>,
	u-boot@...ts.denx.de
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] add support for gpio-usb-b-connector

Linux has a driver for gpio-usb-b-connector that uses a GPIO to
determine host vs peripheral role. This can be useful for USB Type-B
OTG connectors which have an ID pin that is grounded on OTG-to-host
cables and floating on OTG-to-device cables as well as USB power switch
controllers such as the TPS25821 which manages cc pins and has a SINK#
output.

Both scenarios are used for various imx8mp-venice boards.

This series addes support for usb controllers in otg mode
(dr_mode="otg") which have a remote endpoint connector with compatible
'gpio-usb-b-connector' with an id-gpios property.

The first patch adds this capability to the usb_get_dr_mode() function
and the second disables the workarounds used for various imx8mp-venice
boards to default the usb dual-role controllers to host mode. 

Tim Harvey (2):
  usb: common: allow dr_mode to come from gpio-id based usb-connector
  imx8mp-venice: enable USB device mode

 .../dts/imx8mp-venice-gw71xx-2x-u-boot.dtsi   |  5 -
 .../dts/imx8mp-venice-gw72xx-2x-u-boot.dtsi   |  5 -
 .../dts/imx8mp-venice-gw73xx-2x-u-boot.dtsi   |  5 -
 arch/arm/dts/imx8mp-venice-gw74xx-u-boot.dtsi |  5 -
 configs/imx8mp_venice_defconfig               |  7 ++
 drivers/usb/common/common.c                   | 96 ++++++++++++++++++-
 6 files changed, 102 insertions(+), 21 deletions(-)

-- 
2.25.1