linux-toradex.git/drivers/misc/amd-sbi/Kconfig, branch master

misc: amd-sbi: Add support for SB-TSI over I3C

2026-07-17T13:50:48+00:00

AMD SB-TSI temperature sensors can be accessed over both
I2C and I3C buses depending on the platform configuration.
Extend the SB-TSI driver to support both I2C and I3C bus interfaces
by selecting the appropriate transport based on the probed bus type.
The driver maintains backward compatibility with existing I2C
deployments while enabling support for systems using the I3C bus.
Register both I2C and I3C drivers using module_i3c_i2c_driver() and
update the Kconfig dependency from I2C to I3C_OR_I2C.

Reviewed-by: Akshay Gupta 
Signed-off-by: Prathima 
Link: https://patch.msgid.link/20260710111642.850022-6-Akshay.Gupta@amd.com
Signed-off-by: Greg Kroah-Hartman

hwmon/misc: amd-sbi: Move core sbtsi support from hwmon to misc

2026-07-17T13:50:48+00:00

Move SBTSI(Side-Band Temperature Sensor Interface) core functionality out
of the hwmon-only path and into drivers/misc/amd-sbi so it can be reused
by non-hwmon consumers.

I2C probe parsing is moved from drivers/hwmon/sbtsi_temp.c
into drivers/misc/amd-sbi/tsi.c under CONFIG_AMD_SBTSI. The core driver
stores struct sbtsi_data on the bus device and registers an auxiliary
device amd-sbtsi.temp-sensor. per target.
The current hwmon temp sensor will now require the CONFIG_AMD_SBTSI
configuration as a new dependency.

This split prepares the driver for additional interfaces while keeping
hwmon support in hwmon subsystem on top of common SBTSI core logic.

Add platform dependencies to clarify this driver is intended to run on
the BMC and not on the managed node.

Reviewed-by: Akshay Gupta 
Signed-off-by: Prathima 
Acked-by: Guenter Roeck 
Link: https://patch.msgid.link/20260710111642.850022-2-Akshay.Gupta@amd.com
Signed-off-by: Greg Kroah-Hartman

i3c: simplify combined i3c/i2c dependencies

2026-02-27T15:33:07+00:00

All combined i2c/i3c drivers appear to suffer from the same link
time problem when CONFIG_I3C is set to 'm':

arm-linux-gnueabi-ld: drivers/iio/magnetometer/mmc5633.o: in function `mmc5633_i3c_driver_init':
mmc5633.c:(.init.text+0x30): undefined reference to `i3c_driver_register_with_owner'

This was previously fixed every time by marking individual
drivers as 'depends on I2C; depends on I3C || !I3C', but this gets
tedious and is somewhat confusing.

Add a Kconfig symbol 'I3C_OR_I2C' to help replace those dependencies,
and use this in all the existing drivers that had already fixed it
as well as the new mmc5633 driver.

Reviewed-by: Jonathan Cameron 
Signed-off-by: Arnd Bergmann 
Acked-by: Guenter Roeck 
Acked-by: Jonathan Cameron 
Link: https://patch.msgid.link/20260204164216.544409-1-arnd@kernel.org
Signed-off-by: Alexandre Belloni

Merge 6.18-rc3 into char-misc-next

2025-10-27T06:48:19+00:00

We need the fixes in here, and it resolves a merge conflict in:
	drivers/misc/amd-sbi/Kconfig

Signed-off-by: Greg Kroah-Hartman

misc: amd-sbi: Clarify that this is a BMC driver

2025-10-22T06:02:57+00:00

Add a sentence to the driver description to clarify that the sbrmi-i2c
driver is intended to run on the BMC and not on the managed node. Add
platform dependencies accordingly.

Signed-off-by: Jean Delvare 
Link: https://lore.kernel.org/r/5c9f7100-0e59-4237-a252-43c3ee4802a2@amd.com
Link: https://patch.msgid.link/20251016155040.0e86c102@endymion
Signed-off-by: Greg Kroah-Hartman

misc: amd-sbi: Add support for SB-RMI over I3C

2025-10-22T05:59:57+00:00

AMD EPYC platforms with zen5 and later support APML(SB-RMI)
connection to the BMC over I3C bus for faster data transfer
up to 12.5 Mhz.
I2C and I3C is supported in same file using module_i3c_i2c_driver()
with probe based on dts entry.
AMD APML I3C devices support static address for backward compatibility to I2C.
I3C static address can be used to assign I3C device dynamic address.

Reviewed-by: Naveen Krishna Chatradhi 
Signed-off-by: Akshay Gupta 
Link: https://patch.msgid.link/20250915103649.1705078-2-akshay.gupta@amd.com
Signed-off-by: Greg Kroah-Hartman

drivers/misc/amd-sbi/Kconfig: select REGMAP_I2C

2025-09-06T14:00:50+00:00

Without CONFIG_REGMAP, rmi-i2c.c fails to build because struct
regmap_config is not defined:

 drivers/misc/amd-sbi/rmi-i2c.c: In function ‘sbrmi_i2c_probe’:
 drivers/misc/amd-sbi/rmi-i2c.c:57:16: error: variable ‘sbrmi_i2c_regmap_config’ has initializer but incomplete type
    57 |         struct regmap_config sbrmi_i2c_regmap_config = {
       |                ^~~~~~~~~~~~~

Additionally, CONFIG_REGMAP_I2C is needed for devm_regmap_init_i2c():

 ld: drivers/misc/amd-sbi/rmi-i2c.o: in function `sbrmi_i2c_probe':
 drivers/misc/amd-sbi/rmi-i2c.c:69:(.text+0x1c0): undefined reference to `__devm_regmap_init_i2c'

Fixes: 013f7e7131bd ("misc: amd-sbi: Use regmap subsystem")
Cc: stable@vger.kernel.org
Signed-off-by: Max Kellermann 
Tested-by: Akshay Gupta 
Reviewed-by: Akshay Gupta 
Link: https://lore.kernel.org/r/20250829091442.1112106-1-max.kellermann@ionos.com
Signed-off-by: Greg Kroah-Hartman

misc: amd-sbi: Move hwmon device sensor as separate entity

2025-05-21T12:44:40+00:00

- Move hwmon device sensor to misc as only power is reported through
  hwmon sensor.

Reviewed-by: Naveen Krishna Chatradhi 
Signed-off-by: Akshay Gupta 
Link: https://lore.kernel.org/r/20250428063034.2145566-4-akshay.gupta@amd.com
Signed-off-by: Greg Kroah-Hartman

misc: amd-sbi: Move protocol functionality to core file

2025-05-21T12:44:40+00:00

- This is done to utilize the protocol functionality into
  other domains.
- Increase the scalability of the module with different bus(i2c/i3c)

Reviewed-by: Naveen Krishna Chatradhi 
Signed-off-by: Akshay Gupta 
Link: https://lore.kernel.org/r/20250428063034.2145566-3-akshay.gupta@amd.com
Signed-off-by: Greg Kroah-Hartman

hwmon/misc: amd-sbi: Move core sbrmi from hwmon to misc

2025-05-21T12:44:40+00:00

This is done to support other functionality provided by the SBRMI, which
does not fit in the hwmon subsystem.

Reviewed-by: Naveen Krishna Chatradhi 
Signed-off-by: Akshay Gupta 
Acked-by: Guenter Roeck 
Link: https://lore.kernel.org/r/20250428063034.2145566-2-akshay.gupta@amd.com
Signed-off-by: Greg Kroah-Hartman