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| author | Tim Wawrzynczak <twawrzynczak@chromium.org> | 2019-06-13 11:57:36 -0600 |
|---|---|---|
| committer | Enric Balletbo i Serra <enric.balletbo@collabora.com> | 2019-06-18 10:07:13 +0200 |
| commit | e90716a6612150218aaff1fd47ca6de954100a06 (patch) | |
| tree | ccfae2f4789fdf355865630fbb3db2c248c15061 /Documentation | |
| parent | 74e80d81cc7e2b445c28c88cf3b2fa944ae73555 (diff) | |
| download | linux-stable-e90716a6612150218aaff1fd47ca6de954100a06.tar.gz linux-stable-e90716a6612150218aaff1fd47ca6de954100a06.tar.bz2 linux-stable-e90716a6612150218aaff1fd47ca6de954100a06.zip | |
platform/chrome: cros_ec_debugfs: Add debugfs entry to retrieve EC uptime
The new debugfs entry 'uptime' is being made available to userspace so that
a userspace daemon can synchronize EC logs with host time.
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
[rework based on Tim's first approach]
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Tested-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/debugfs-cros-ec | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/debugfs-cros-ec b/Documentation/ABI/testing/debugfs-cros-ec new file mode 100644 index 000000000000..c91da2d374aa --- /dev/null +++ b/Documentation/ABI/testing/debugfs-cros-ec @@ -0,0 +1,8 @@ +What: /sys/kernel/debug/<cros-ec-device>/uptime +Date: June 2019 +KernelVersion: 5.3 +Description: + A u32 providing the time since EC booted in ms. This is + is used for synchronizing the AP host time with the EC + log. An error is returned if the command is not supported + by the EC or there is a communication problem. |