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| /openbmc/linux/drivers/i2c/busses/ |
| H A D | i2c-piix4.c | diff 528d53a1592b0e27c423f7cafc1df85f77fc1163 Fri Aug 02 07:54:38 CDT 2019 Jean Delvare <jdelvare@suse.de> i2c: piix4: Fix probing of reserved ports on AMD Family 16h Model 30h
Prevent bus timeouts and resets on Family 16h Model 30h by not probing
reserved Ports 3 and 4.
According to the AMD BIOS and Kernel Developer's Guides (BKDG), Port 3
and Port 4 are reserved on the following devices:
- Family 15h Model 60h-6Fh
- Family 15h Model 70h-7Fh
- Family 16h Model 30h-3Fh
Based on earlier work by Andrew Cooks.
Reported-by: Andrew Cooks <andrew.cooks@opengear.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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