kernel/linux.git/drivers/i3c/master/Kconfig, branch linux-7.0.y

i3c: mipi-i3c-hci-pci: Convert to MFD driver

2026-01-14T14:53:34+00:00

Prepare for Multi-Bus instance support. Convert to MFD driver but still support only 1 instance. Signed-off-by: Adrian Hunter Reviewed-by: Frank Li Link: https://patch.msgid.link/20260106164416.67074-10-adrian.hunter@intel.com Signed-off-by: Alexandre Belloni

i3c: master: Add driver for Analog Devices I3C Controller IP

2025-09-16T15:06:43+00:00

Add support for Analog Devices I3C Controller IP, an AXI-interfaced IP core that supports I3C and I2C devices, multiple speed-grades and I3C IBIs. Reviewed-by: Frank Li Signed-off-by: Jorge Marques Link: https://lore.kernel.org/r/20250827-adi-i3c-master-v9-2-04413925abe1@analog.com Signed-off-by: Alexandre Belloni

i3c: master: Add basic driver for the Renesas I3C controller

2025-07-30T23:33:20+00:00

Add a basic driver for the I3C controller found in Renesas RZ/G3S and G3E SoCs. Support I3C pure busses (tested with two targets) and mixed busses (two I3C devices plus various I2C targets). DAA and communication with temperature sensors worked reliably at various speeds. Missing features such as IBI, HotJoin, and target mode will be added incrementally. Signed-off-by: Wolfram Sang Tested-by: Tommaso Merciai Reviewed-by: Frank Li Link: https://lore.kernel.org/r/20250724094146.6443-5-wsa+renesas@sang-engineering.com Signed-off-by: Alexandre Belloni

i3c: controllers do not need to depend on I3C

2025-05-24T20:49:07+00:00

The Kconfig file for controller drivers is only sourced if the I3C symbol is enabled. No need to check for that in individual drivers. Signed-off-by: Wolfram Sang Link: https://lore.kernel.org/r/20250506075247.1545-2-wsa+renesas@sang-engineering.com Signed-off-by: Alexandre Belloni

i3c: mipi-i3c-hci: Add support for MIPI I3C HCI on PCI bus

2025-01-12T22:54:39+00:00

Add a glue code for the MIPI I3C HCI on PCI bus with Intel Panther Lake I3C controller PCI IDs. MIPI I3C HCI on Intel platforms has additional logic around the MIPI I3C HCI core logic. Those together create so called I3C slice on PCI bus. Intel specific initialization code does a reset cycle to the I3C slice before probing the MIPI I3C HCI part. Signed-off-by: Jarkko Nikula Link: https://lore.kernel.org/r/20241231115904.620052-2-jarkko.nikula@linux.intel.com Signed-off-by: Alexandre Belloni

i3c: ast2600: Add AST2600 platform-specific driver

2023-04-28T06:19:01+00:00

Now that we have platform-specific infrastructure for the dw i3c driver, add platform support for the ASPEED AST2600 SoC. The AST2600 has a small set of "i3c global" registers, providing platform-level i3c configuration outside of the i3c core. For the ast2600, we need a couple of extra setup operations: - on probe: find the i3c global register set and parse the SDA pullup resistor values - on init: set the pullups accordingly, and set the i3c instance IDs Signed-off-by: Jeremy Kerr Reviewed-by: Joel Stanley Link: https://lore.kernel.org/r/20230331091501.3800299-4-jk@codeconstruct.com.au Signed-off-by: Alexandre Belloni

i3c: master: svc: Add Silvaco I3C master driver

2021-02-05T23:43:29+00:00

Add support for Silvaco I3C dual-role IP. The master role is supported in SDR mode only. I2C transfers have not been tested but are shared because they are very close to the I3C transfers in terms of register configuration. The IBI processing follows this logic: - When a slave advertizes an interrupt (SDA pulled low) an interrupt gets generated by the master. This time is unbounded and may be deferred. - The IRQ handler itself does not process anything: it only queues a work that will be run in non-atomic context. This is needed because short wait periods must be experienced. - The IBI job is divided in two parts: the first one is "critical" in the sense that it may not support getting interrupted. If this happens, after this first section the driver checks the master error register and depending on its content either flushes everything and errors out, or ends the processing (this second section may be interrupted). - If the critical section got interrupted, the slave will automatically respin it's IBI request when it will be allowed to. Signed-off-by: Miquel Raynal Signed-off-by: Alexandre Belloni Link: https://lore.kernel.org/r/20210121101808.14654-6-miquel.raynal@bootlin.com

i3c/master/mipi-i3c-hci: Specify HAS_IOMEM dependency

2021-02-01T22:39:17+00:00

The MIPI i3c HCI driver makes use of IOMEM functions like devm_platform_ioremap_resource(), which are only available if CONFIG_HAS_IOMEM is defined. This causes the driver to be enabled under make ARCH=um allyesconfig, even though it won't build. By adding a dependency on HAS_IOMEM, the driver will not be enabled on architectures which don't support it. Fixes: 9ad9a52cce28 ("i3c/master: introduce the mipi-i3c-hci driver") Signed-off-by: David Gow Acked-by: Nicolas Pitre Signed-off-by: Alexandre Belloni Link: https://lore.kernel.org/r/20210127040636.1535722-1-davidgow@google.com

i3c/master: introduce the mipi-i3c-hci driver

2020-11-23T09:22:18+00:00

This adds basic support for hardware implementing the MIPI I3C HCI specification. This driver is currently limited by the capabilities of the I3C subsystem, meaning things like scheduled commands, auto-commands and NCM mode are not yet supported. This supports version 1.0 of the MIPI I3C HCI spec, as well as the imminent release of version 1.1. Support for draft version 2.0 of the spec is also largely included with the caveat that future adjustments to this code are likely as the spec is still a work in progress. This is also lightly tested as actual hardware is still very scarce, even for HCI v1.0. Hence the EXPERIMENTAL tag. Further contributions to this driver are expected once vendor implementations and new I3C devices become available. Signed-off-by: Nicolas Pitre Signed-off-by: Boris Brezillon Link: https://lore.kernel.org/linux-i3c/20201111220510.3622216-3-nico@fluxnic.net

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman