Adam Honse 1bf0b66cf3 i2c: piix4: Detect secondary SMBus controller on AMD AM4 chipsets ... [ Upstream commit f27237c174 ] The AMD X370 and other AM4 chipsets (A/B/X 3/4/5 parts) and Threadripper equivalents have a secondary SMBus controller at I/O port address 0x0B20. This bus is used by several manufacturers to control motherboard RGB lighting via embedded controllers. I have been using this bus in my OpenRGB project to control the Aura RGB on many motherboards and ASRock also uses this bus for their Polychrome RGB controller. I am not aware of any CZ-compatible platforms which do not have the second SMBus channel. All of AMD's AM4- and Threadripper- series chipsets that OpenRGB users have tested appear to have this secondary bus. I also noticed this secondary bus is present on older AMD platforms including my FM1 home server. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=202587 Signed-off-by: Adam Honse <calcprogrammer1@gmail.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Tested-by: Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-06-25 15:41:47 +02:00
..
algos
busses	i2c: piix4: Detect secondary SMBus controller on AMD AM4 chipsets	2020-06-25 15:41:47 +02:00
muxes	i2c: mux: demux-pinctrl: Fix an error handling path in 'i2c_demux_pinctrl_probe()'	2020-05-27 16:42:52 +02:00
i2c-boardinfo.c
i2c-core-acpi.c	i2c: acpi: put device when verifying client fails	2020-03-20 10:54:20 +01:00
i2c-core-base.c
i2c-core-of.c	i2c: core: fix use after free in of_i2c_notify	2019-12-17 20:37:32 +01:00
i2c-core-slave.c
i2c-core-smbus.c
i2c-core.h
i2c-dev.c	i2c: dev: Fix the race between the release of i2c_dev and cdev	2020-05-27 16:42:50 +02:00
i2c-mux.c
i2c-slave-eeprom.c
i2c-smbus.c
i2c-stub.c
Kconfig
Makefile