From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- Documentation/ABI/testing/debugfs-cros-ec | 56 +++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 Documentation/ABI/testing/debugfs-cros-ec (limited to 'Documentation/ABI/testing/debugfs-cros-ec') diff --git a/Documentation/ABI/testing/debugfs-cros-ec b/Documentation/ABI/testing/debugfs-cros-ec new file mode 100644 index 000000000..1fe0add99 --- /dev/null +++ b/Documentation/ABI/testing/debugfs-cros-ec @@ -0,0 +1,56 @@ +What: /sys/kernel/debug//console_log +Date: September 2017 +KernelVersion: 4.13 +Description: + If the EC supports the CONSOLE_READ command type, this file + can be used to grab the EC logs. The kernel polls for the log + and keeps its own buffer but userspace should grab this and + write it out to some logs. + +What: /sys/kernel/debug//panicinfo +Date: September 2017 +KernelVersion: 4.13 +Description: + This file dumps the EC panic information from the previous + reboot. This file will only exist if the PANIC_INFO command + type is supported by the EC. + +What: /sys/kernel/debug//pdinfo +Date: June 2018 +KernelVersion: 4.17 +Description: + This file provides the port role, muxes and power debug + information for all the USB PD/type-C ports available. If + the are no ports available, this file will be just an empty + file. + +What: /sys/kernel/debug//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. + +What: /sys/kernel/debug//last_resume_result +Date: June 2019 +KernelVersion: 5.3 +Description: + Some ECs have a feature where they will track transitions to + the (Intel) processor's SLP_S0 line, in order to detect cases + where a system failed to go into S0ix. When the system resumes, + an EC with this feature will return a summary of SLP_S0 + transitions that occurred. The last_resume_result file returns + the most recent response from the AP's resume message to the EC. + + The bottom 31 bits contain a count of the number of SLP_S0 + transitions that occurred since the suspend message was + received. Bit 31 is set if the EC attempted to wake the + system due to a timeout when watching for SLP_S0 transitions. + Callers can use this to detect a wake from the EC due to + S0ix timeouts. The result will be zero if no suspend + transitions have been attempted, or the EC does not support + this feature. + + Output will be in the format: "0x%08x\n". -- cgit v1.2.3