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56 lines
2.1 KiB
56 lines
2.1 KiB
What: /sys/kernel/debug/<cros-ec-device>/console_log |
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Date: September 2017 |
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KernelVersion: 4.13 |
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Description: |
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If the EC supports the CONSOLE_READ command type, this file |
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can be used to grab the EC logs. The kernel polls for the log |
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and keeps its own buffer but userspace should grab this and |
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write it out to some logs. |
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What: /sys/kernel/debug/<cros-ec-device>/panicinfo |
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Date: September 2017 |
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KernelVersion: 4.13 |
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Description: |
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This file dumps the EC panic information from the previous |
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reboot. This file will only exist if the PANIC_INFO command |
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type is supported by the EC. |
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What: /sys/kernel/debug/<cros-ec-device>/pdinfo |
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Date: June 2018 |
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KernelVersion: 4.17 |
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Description: |
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This file provides the port role, muxes and power debug |
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information for all the USB PD/type-C ports available. If |
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the are no ports available, this file will be just an empty |
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file. |
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What: /sys/kernel/debug/<cros-ec-device>/uptime |
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Date: June 2019 |
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KernelVersion: 5.3 |
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Description: |
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A u32 providing the time since EC booted in ms. This is |
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is used for synchronizing the AP host time with the EC |
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log. An error is returned if the command is not supported |
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by the EC or there is a communication problem. |
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What: /sys/kernel/debug/<cros-ec-device>/last_resume_result |
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Date: June 2019 |
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KernelVersion: 5.3 |
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Description: |
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Some ECs have a feature where they will track transitions to |
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the (Intel) processor's SLP_S0 line, in order to detect cases |
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where a system failed to go into S0ix. When the system resumes, |
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an EC with this feature will return a summary of SLP_S0 |
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transitions that occurred. The last_resume_result file returns |
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the most recent response from the AP's resume message to the EC. |
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The bottom 31 bits contain a count of the number of SLP_S0 |
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transitions that occurred since the suspend message was |
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received. Bit 31 is set if the EC attempted to wake the |
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system due to a timeout when watching for SLP_S0 transitions. |
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Callers can use this to detect a wake from the EC due to |
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S0ix timeouts. The result will be zero if no suspend |
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transitions have been attempted, or the EC does not support |
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this feature. |
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Output will be in the format: "0x%08x\n".
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