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| author | Jack Rosenthal <jrosenth@chromium.org> | 2021-11-04 12:11:58 -0600 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-11-05 04:22:34 +0000 |
| commit | 252457d4b21f46889eebad61d4c0a65331919cec (patch) | |
| tree | 01856c4d31d710b20e85a74c8d7b5836e35c3b98 /docs/i2c-debugging.md | |
| parent | 08f5a1e6fc2c9467230444ac9b582dcf4d9f0068 (diff) | |
| download | chrome-ec-release-R102-14695.B-ish.tar.gz | |
ish: Trim down the release branchstabilize-wristpin-14469.59.B-ishstabilize-voshyr-14637.B-ishstabilize-quickfix-14695.187.B-ishstabilize-quickfix-14695.124.B-ishstabilize-quickfix-14526.91.B-ishstabilize-14695.85.B-ishstabilize-14695.107.B-ishstabilize-14682.B-ishstabilize-14633.B-ishstabilize-14616.B-ishstabilize-14589.B-ishstabilize-14588.98.B-ishstabilize-14588.14.B-ishstabilize-14588.123.B-ishstabilize-14536.B-ishstabilize-14532.B-ishstabilize-14528.B-ishstabilize-14526.89.B-ishstabilize-14526.84.B-ishstabilize-14526.73.B-ishstabilize-14526.67.B-ishstabilize-14526.57.B-ishstabilize-14498.B-ishstabilize-14496.B-ishstabilize-14477.B-ishstabilize-14469.9.B-ishstabilize-14469.8.B-ishstabilize-14469.58.B-ishstabilize-14469.41.B-ishstabilize-14442.B-ishstabilize-14438.B-ishstabilize-14411.B-ishstabilize-14396.B-ishstabilize-14395.B-ishstabilize-14388.62.B-ishstabilize-14388.61.B-ishstabilize-14388.52.B-ishstabilize-14385.B-ishstabilize-14345.B-ishstabilize-14336.B-ishstabilize-14333.B-ishrelease-R99-14469.B-ishrelease-R98-14388.B-ishrelease-R102-14695.B-ishrelease-R101-14588.B-ishrelease-R100-14526.B-ishfirmware-cherry-14454.B-ishfirmware-brya-14505.B-ishfirmware-brya-14505.71.B-ishfactory-kukui-14374.B-ishfactory-guybrush-14600.B-ishfactory-cherry-14455.B-ishfactory-brya-14517.B-ish
In the interest of making long-term branch maintenance incur as little
technical debt on us as possible, we should not maintain any files on
the branch we are not actually using.
This has the added effect of making it extremely clear when merging CLs
from the main branch when changes have the possibility to affect us.
The follow-on CL adds a convenience script to actually pull updates from
the main branch and generate a CL for the update.
BUG=b:204206272
BRANCH=ish
TEST=make BOARD=arcada_ish && make BOARD=drallion_ish
Signed-off-by: Jack Rosenthal <jrosenth@chromium.org>
Change-Id: I17e4694c38219b5a0823e0a3e55a28d1348f4b18
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3262038
Reviewed-by: Jett Rink <jettrink@chromium.org>
Reviewed-by: Tom Hughes <tomhughes@chromium.org>
Diffstat (limited to 'docs/i2c-debugging.md')
| -rw-r--r-- | docs/i2c-debugging.md | 51 |
1 files changed, 0 insertions, 51 deletions
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 -``` |