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Message-ID: <20260203233912448420e5@mail.local>
Date: Wed, 4 Feb 2026 00:39:12 +0100
From: Alexandre Belloni <alexandre.belloni@...tlin.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-i3c@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [GIT PULL] I3C changes for 6.20
Hello Linus,
Here is the i3c subsystem pull request for 6.19. Most of the work has
been concentrated on mipi-i3c-hci and in particular its pci variant. The
renesas and dw drivers have also seen a few improvements.
The following changes since commit 8f0b4cce4481fb22653697cced8d0d04027cb1e8:
Linux 6.19-rc1 (2025-12-14 16:05:07 +1200)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux.git tags/i3c/for-6.20
for you to fetch changes up to ed318b3fb4ab317c533d38d160326fa5d7569497:
i3c: dw-i3c-master: fix SIR reject bit mapping for dynamic addresses (2026-01-31 00:05:22 +0100)
----------------------------------------------------------------
I3C for 6.20
Subsystem:
- add sysfs entry and attribute for Device NACK Retry count
Drivers:
- dw: Device NACK Retry configuration knob
- mipi-i3c-hci: support for Multi-Bus Instances, Runtime PM support, System
Suspend support
- renesas: suspend/resume support
----------------------------------------------------------------
Adrian Hunter (35):
i3c: mipi-i3c-hci: Remove duplicate blank lines
i3c: mipi-i3c-hci: Stop reading Extended Capabilities if capability ID is 0
i3c: mipi-i3c-hci: Quieten initialization messages
i3c: mipi-i3c-hci-pci: Do not repeatedly check for NULL driver_data
i3c: mipi-i3c-hci-pci: Enable MSI support
i3c: mipi-i3c-hci-pci: Assign unique device names and IDs for Intel LPSS I3C
i3c: mipi-i3c-hci: Allow for Multi-Bus Instances
i3c: mipi-i3c-hci-pci: Pass base regs as platform data to i3c core device
i3c: mipi-i3c-hci-pci: Convert to MFD driver
i3c: mipi-i3c-hci-pci: Add support for Multi-Bus Instances
i3c: mipi-i3c-hci-pci: Define Multi-Bus instances for supported controllers
i3c: mipi-i3c-hci: Reset RING_OPERATION1 fields during init
i3c: mipi-i3c-hci: Ensure proper bus clean-up
i3c: master: Update hot-join flag only on success
i3c: master: Replace WARN_ON() with dev_err() in i3c_dev_free_ibi_locked()
i3c: mipi-i3c-hci: Switch DAT bitmap allocation to devm_bitmap_zalloc()
i3c: mipi-i3c-hci: Switch PIO data allocation to devm_kzalloc()
i3c: mipi-i3c-hci: Manage DMA deallocation via devres action
i3c: mipi-i3c-hci: Cache DAT in memory for Runtime PM restore
i3c: mipi-i3c-hci: Introduce helper to restore DAT
i3c: mipi-i3c-hci: Extract ring initialization from hci_dma_init()
i3c: mipi-i3c-hci: Add DMA suspend and resume support
i3c: mipi-i3c-hci: Refactor PIO register initialization
i3c: mipi-i3c-hci: Add PIO suspend and resume support
i3c: mipi-i3c-hci: Factor out software reset into helper
i3c: mipi-i3c-hci: Factor out IO mode setting into helper
i3c: mipi-i3c-hci: Factor out core initialization into helper
i3c: mipi-i3c-hci: Allow core re-initialization for Runtime PM support
i3c: mipi-i3c-hci: Factor out master dynamic address setting into helper
i3c: master: Introduce optional Runtime PM support
i3c: mipi-i3c-hci: Add optional Runtime PM support
i3c: mipi-i3c-hci-pci: Add Runtime PM support
i3c: master: Add i3c_master_do_daa_ext() for post-hibernation address recovery
i3c: mipi-i3c-hci: Add optional System Suspend support
i3c: mipi-i3c-hci-pci: Add System Suspend support
Adrian Ng Ho Yin (6):
i3c: add sysfs entry and attribute for Device NACK Retry count
i3c: dw: Add support for Device NACK Retry configuration
i3c: dw: use FIELD_PREP for device address table macros
i3c: dw: Preserve DAT entry bits when restoring addresses
i3c: dw-i3c-master: convert spinlock usage to scoped guards
i3c: dw-i3c-master: fix SIR reject bit mapping for dynamic addresses
Billy Tsai (1):
i3c: Move device name assignment after i3c_bus_init
Frank Li (3):
i3c: drop i3c_priv_xfer and i3c_device_do_priv_xfers()
i3c: master: svc: Initialize 'dev' to NULL in svc_i3c_master_ibi_isr()
i3c: Add stub functions when I3C support is disabled
Fredrik Markstrom (1):
i3c: dw: Initialize spinlock to avoid upsetting lockdep
Krzysztof Kozlowski (1):
i3c: master: Simplify with scoped for each OF child loop
Tommaso Merciai (4):
i3c: renesas: Switch to clk_bulk API and store clocks in private data
i3c: renesas: Store clock rate and reset controls in struct renesas_i3c
i3c: renesas: Factor out hardware initialization to separate function
i3c: renesas: Add suspend/resume support
Zilin Guan (1):
i3c: dw: Fix memory leak in dw_i3c_master_i2c_xfers()
Documentation/ABI/testing/sysfs-bus-i3c | 11 +
drivers/i3c/device.c | 46 +-
drivers/i3c/internals.h | 4 +
drivers/i3c/master.c | 213 ++++++++--
drivers/i3c/master/Kconfig | 1 +
drivers/i3c/master/dw-i3c-master.c | 121 ++++--
drivers/i3c/master/mipi-i3c-hci/cmd_v1.c | 2 -
drivers/i3c/master/mipi-i3c-hci/cmd_v2.c | 2 -
drivers/i3c/master/mipi-i3c-hci/core.c | 465 +++++++++++++++------
drivers/i3c/master/mipi-i3c-hci/dat.h | 2 +-
drivers/i3c/master/mipi-i3c-hci/dat_v1.c | 46 +-
drivers/i3c/master/mipi-i3c-hci/dma.c | 171 +++++---
drivers/i3c/master/mipi-i3c-hci/ext_caps.c | 58 ++-
drivers/i3c/master/mipi-i3c-hci/ext_caps.h | 1 -
drivers/i3c/master/mipi-i3c-hci/hci.h | 17 +-
drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c | 186 ++++++---
drivers/i3c/master/mipi-i3c-hci/pio.c | 64 ++-
drivers/i3c/master/renesas-i3c.c | 319 ++++++++------
drivers/i3c/master/svc-i3c-master.c | 4 +-
include/linux/i3c/device.h | 24 +-
include/linux/i3c/master.h | 11 +
include/linux/platform_data/mipi-i3c-hci.h | 15 +
22 files changed, 1269 insertions(+), 514 deletions(-)
create mode 100644 include/linux/platform_data/mipi-i3c-hci.h
--
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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