** Also affects: linux-bluefield (Ubuntu Jammy)
Importance: Undecided
Status: New
** Changed in: linux-bluefield (Ubuntu Jammy)
Importance: Undecided => Medium
** Changed in: linux-bluefield (Ubuntu Jammy)
Status: New => In Progress
** Changed in: linux-bluefield (Ubuntu Jammy)
Assignee: (unassigned) => Asmaa Mnebhi (asmaam)
** Changed in: linux-bluefield (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/2012743
Title:
Support Nvidia BlueField-3 GPIO driver and pin controller
Status in linux-bluefield package in Ubuntu:
Invalid
Status in linux-bluefield source package in Jammy:
In Progress
Bug description:
SRU Justification:
[Impact]
Support the BlueField-3 SoC GPIO driver for handling interrupts and providing
the option to change the direction and value of a GPIO.
Support the BlueField-3 SoC pin controller driver for allowing a select
number of GPIO pins to be manipulated from userspace or the kernel.
All these changes have been accepted for upstream but most of them are
not yet in the tree/branches.
PLEASE NOTE: This change is dependent on changes done in the ACPI
tables. So the UEFI image needs to be updated accordingly.
[Fix]
* Add support for the BlueField-3 SoC GPIO driver.
This driver configures and handles GPIO interrupts. It also enables a user to
manipulate certain GPIO pins via libgpiod tools or other kernel drivers.
The usable pins are defined via the "gpio-reserved-ranges" property.
* NVIDIA BlueField-3 SoC has a few pins that can be used as GPIOs or
take the default hardware functionality. Add a driver for the pin
muxing.
* The following gpiolib commits are bug fixes and are required for the gpio
driver to work:
443a0a0f0cf4f432c7af6654b7f2f920d411d379
Although the following have been accepted by maintainers, they are not
present in any tree/branch yet so
these will be pushed as SAUCE for now:
[PATCH v4] gpio: mmio: handle "ngpios" properly in bgpio_init()
[PATCH v1] gpio: mmio: fix calculation of bgpio_bits
[Test Case]
* Check if the gpio-mlxbf3 driver is loaded
* Check if the pinctrl-mlxbf3 driver is loaded
* check if the mlxbf-gige driver is loaded
* check if the pwr-mlxbf driver is loaded
* Check that the oob_net0 interface is up and operational
* Do reset and powercycle and check the oob_net0 interface again
* Test power GPIO interrupt on BF3.
[Regression Potential]
* The Mellanox drivers could fail to be loaded.
* The mlxbf-gige PHY interrupt or pwr-mlxbf interrupt could fail.
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