pm24.git/Documentation/i2c, branch master

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

2024-11-18T07:35:47Z

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 Deprecated Features: - Dropped outdated support for AMD756 S4882 and NFORCE2 S4985.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

2024-11-17T10:58:57Z

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

2024-11-14T09:35:30Z

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

2024-11-13T22:29:46Z

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

2024-08-26T13:15:48Z

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

2024-08-26T13:15:22Z

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

2024-08-14T17:56:51Z

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

2024-08-14T17:55:40Z

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

i2c: testunit: use decimal values in docs when appropriate

2024-08-14T17:55:10Z

Sometimes decimal values are just shorter (like for cmds), sometimes they are even easier to understand (like for the delay value). Make use of them. Signed-off-by: Wolfram Sang

Merge tag 'i2c-host-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-mergewindow

2024-07-13T09:10:54Z

This release includes significant updates, with the primary change being the renaming from "master/slave" to "controller/target" to adhere to I2C v7 and SMBus 3.2 standards. New Support: - Added support for Intel Arrow Lake-H. - Added I2C support in the Arioha SoC by linking the Mediatek I2C controller. Cleanups: - Added the MODULE_DESCRIPTION() macro, resolving a modpost warning in the ALi 1563 Southbridge driver. - Constified the regmap_config declaration in the i2c-designware driver. - Improved the coding style in the Renesas R-Car driver by removing unnecessary semicolons after brackets. General improvements: - In the OMAP device, replaced NOIRQ_SYSTEM_SLEEP_PM_OPS with RUNTIME_PM_OPS to enable waking up the controller during suspend() before suspend_noirq() kicks in. - Improved logging in the Xilinx driver. - Added a warning (WARN()) in the Renesas R-Car driver for spurious interrupts. DTS Changes: - Removed address-cell and size-cell from the Atmel at91sam, nVidia Tegra 20, and Samsung S3c2410 devices. - Fixed Texas Instruments OMAP4 I2C controller to comply with the i2c-controller.yaml schema. - Improved indentation in DTS examples for several I2C devices. - Converted the NXP LPC1788 binding to the dt-schema. - Added documentation for the compatible string thead,th1520-i2c. - Added the "power-domains" property for the Meson I2C driver.