Bug 178371 - Nokia N900 (omap3-n900) with "VDD1: ramp_delay not set" string in printk
Summary: Nokia N900 (omap3-n900) with "VDD1: ramp_delay not set" string in printk
Status: NEW
Alias: None
Product: Platform Specific/Hardware
Classification: Unclassified
Component: ARM (show other bugs)
Hardware: ARM Linux
: P1 normal
Assignee: linux-arm-kernel@lists.arm.linux.org.uk
Depends on:
Reported: 2016-10-19 09:53 UTC by Icenowy Zheng
Modified: 2016-11-06 19:24 UTC (History)
2 users (show)

See Also:
Kernel Version: 4.9-rc1
Tree: Mainline
Regression: No


Description Icenowy Zheng 2016-10-19 09:53:12 UTC
I booted the newest 4.9-rc1 kernel on my N900. (with also the device tree provided in mainline)

After it's booted, main functions can perform well, but I got "VDD1: ramp_delay not set" message frequently, which affected console usage.
Comment 1 Thorsten Leemhuis 2016-10-23 12:16:28 UTC
Friendly advice from the regression tracker. This warning comes from here
$ grep -r "ramp_delay not set"  *
drivers/regulator/core.c:		rdev_warn(rdev, "ramp_delay not set\n");

Hence you might want to contact people using below  mail addresses, as the relevant people are unlikely to see the problem here in bugzilla: 

$ ./scripts/get_maintainer.pl drivers/regulator/core.c
Liam Girdwood <lgirdwood@gmail.com> (supporter:VOLTAGE AND CURRENT REGULATOR FRAMEWORK)
Mark Brown <broonie@kernel.org> (supporter:VOLTAGE AND CURRENT REGULATOR FRAMEWORK)
linux-kernel@vger.kernel.org (open list:VOLTAGE AND CURRENT REGULATOR FRAMEWORK)

Maybe those are the wrong people to contact (it might happen due to change in a different area), but they should be able to point you in the right direction if you ask nicely.

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