kernel/linux.git/Documentation/i2c, branch v6.18.21

i2c: i801: Add support for Intel Wildcat Lake-U

2025-09-27T22:45:53+00:00

Add SMBus IDs on Intel Wildcat Lake-U. Signed-off-by: Jarkko Nikula Signed-off-by: Wolfram Sang

docs: i2c: Fix "resitors" to "resistors"

2025-05-20T09:22:16+00:00

Fix misspelling reported by codespell Signed-off-by: Sumanth Gavini Signed-off-by: Wolfram Sang

Merge tag 'i2c-host-6.13-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-mergewindow

2024-11-18T07:35:47+00:00

i2c-host updates for v6.13, part 1 Major Improvements and Refactoring: - All controllers using the 'remove_new' callback have been reverted to use the 'remove' callback. - Intel SCH controller underwent significant refactoring, this brings love and a modern look to the driver. - PIIX4 driver refactored to enable usage by other drivers (e.g., AMD ASF). - iMX/MXC improved message handling to reduce protocol overhead: Refactored DMA/non-DMA read/write and bus polling mechanisms to achieve this. - ACPI documentation for PIIX4. New Features: - i2c-cadence added support for atomic transfers. - Qualcomm CII added support for a 32MHz serial engine clock. Deprecated Features: - Dropped outdated support for AMD756 S4882 and NFORCE2 S4985. If somebody misses this, Jean will rewrite support using the proper i2c mux framework. New Hardware Support: - Added support for: - Intel Panther Lake (new ID) - AMD ASF (new driver) - S32G2/S32G3 SoCs (new ID) - Realtek RTL I2C Controller (new driver) - HJMC01 DesignWare ACPI HID (new ID) - PIC64GX to Microchip Core (new ID) - Qualcomm SDM670 to Qualcomm CCI (new ID)

docs: i2c: piix4: Add ACPI section

2024-11-17T10:58:57+00:00

Provide information how to reference I2C busses created by the PIIX4 chip driver from the ACPI code. Signed-off-by: Konstantin Aladyshev Reviewed-by: Andy Shevchenko Reviewed-by: Bagas Sanjaya Signed-off-by: Andi Shyti

Documentation: i2c: Constify struct i2c_device_id

2024-11-14T09:35:30+00:00

Constify the i2c_device_id structure in the doc to give a cleaner starting point. Also remove an empty line which is usually not added. Signed-off-by: Christophe JAILLET Signed-off-by: Wolfram Sang

i2c: i801: Add support for Intel Panther Lake

2024-11-13T22:29:46+00:00

Add SMBus PCI IDs on Intel Panther Lake-P and -U. Signed-off-by: Jarkko Nikula Signed-off-by: Andi Shyti

i2c: testunit: add SMBusAlert trigger

2024-08-26T13:15:48+00:00

To test SMBusAlert handlers, let the testunit be able to trigger SMBusAlert interrupts. This new command needs a GPIO connected to the SMBAlert# line. Signed-off-by: Wolfram Sang

i2c: testunit: describe fwnode based instantiation

2024-08-26T13:15:22+00:00

The testunit can also be instantiated via firmware nodes. Give a devicetree node as an example. Signed-off-by: Wolfram Sang

i2c: testunit: return current command on read messages

2024-08-14T17:56:51+00:00

Because the testunit can start tests in the future via the DELAY register, it may happen that a command is still pending. Support detecting that by returning the number of a command in progress (if there is one). Signed-off-by: Wolfram Sang

i2c: testunit: add command to support versioning and test rep_start

2024-08-14T17:55:40+00:00

For some devices, it is essential that controllers handle repeated start correctly and do not replace it with a stop/start combination. This addition helps to test that because it will only return a version string if repeated start is done properly. Signed-off-by: Wolfram Sang