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diff --git a/docs/i2c-debugging.md b/docs/i2c-debugging.md deleted file mode 100644 index 125e72b777..0000000000 --- a/docs/i2c-debugging.md +++ /dev/null @@ -1,51 +0,0 @@ -# I²C Debugging Tips - -The EC codebase has functionality to help you debug I²C errors without pulling -out the scope. Some of the debug functionality is disabled by default to save -space, but can be enabled with the `CONFIG_I2C_DEBUG` option. - -## Tracing - -You can use the `i2ctrace` command to monitor (ranges of) addresses: - -``` -i2ctrace [list - | disable <id> - | enable <port> <address> - | enable <port> <address-low> <address-high>] -``` - -For example: - -``` -> i2ctrace enable 0 0x10 0x30 -> i2ctrace enable 1 0x20 -> i2ctrace list -id port address --- ---- ------- -0 0 0x10 to 0x30 -1 1 0x40 to 0x50 -... debug spam may follow ... -i2c: 1:0x20 wr 0x10 rd 0x01 0x00 -i2c: 1:0x20 wr 0x10 0x01 0x00 -... -> i2ctrace disable 1 -> i2ctrace list -id port address --- ---- ------- -0 0 0x10 to 0x30 -``` - -A maximum of 8 debug entries are supported at a single time. - -Note that `i2ctrace enable` will merge debug entries when possible: - -``` -> i2ctrace enable 0 0x10 0x30 -> i2ctrace enable 0 0x40 0x50 -> i2ctrace enable 0 0x31 0x3f -> i2ctrace list -id port address --- ---- ------- -0 0 0x10 to 0x50 -``` |