Bug 7525

Summary: GPIO Wake should not program all GPIO pins for wake.
Product: [Hardware Platforms] MinnowBoard MAX Firmware Reporter: Ivan Rouzanov <ivan.rouzanov>
Component: minnowmax-edk2Assignee: David_Wei <david.wei>
Status: RESOLVED FIXED QA Contact:
Severity: normal    
Priority: Medium CC: david.wei, dvhart, ivan.rouzanov, sjolley.yp.pm
Version: 2C A2   
Target Milestone: Production Release   
Hardware: MinnowBoard Max   
OS: x86_64   
Whiteboard:
OS type for building Yocto: --- Type of Regression: ---
Verified: Documentation change: Don't know
Attachments:
Description Flags
test image none

Description Ivan Rouzanov 2015-03-27 02:44:36 UTC 
Once the GPIO wake feature is enabled in the UEFI settings under Device Manager -> System Setup ->South Cluster Configuration->Miscellaneous Configuration->GPIO Wake Capability <Enable/Disable>, it is not possible to toggle the ANY GPIO outputs or read GPIO values using the GPIO WinRT API's. Disabling the GPIO wake capability, enables the GPIO outputs.

I think, we should only have a dedicated GPIO pin for wake up, but other pins should continue to work as input or output.
Comment 1 David_Wei 2015-06-24 06:56:51 UTC 
Created attachment 2559 [details]
test image

Test image attached. After enabling GPIO wakeup by Setup, only pin21 of HDR26 (Low speed expander) has the wakeup capability. Other pins continue to work as input/output.
Comment 2 Ivan Rouzanov 2015-06-25 08:34:53 UTC 
Test image fixes the problem.