lkml.org 
[lkml]   [2015]   [Jul]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: V4.0.x fails to create /dev/rtc0 on Winbook TW100 when CONFIG_PINCTRL_BAYTRAIL is set, bisected to commit 7486341
On 7/11/2015 11:21 AM, Arjan van de Ven wrote:
> On 7/11/2015 10:59 AM, Larry Finger wrote:
>> On a Winbook TW100 BayTrail tablet, kernel 4.0 and later do not create /dev/rtc0 when CONFIG_PINCTRL_BAYTRAIL is set in the configuration. Removing this option from the
>> config creates a real-time clock; however, it is no longer possible to get the tablet to sleep using the power button. Only complete shutdown works.
>>
>> This problem was bisected to the following commit:
>
> in "hardware reduced mode" (e.g. tablets) on Baytrail the RTC is not actually enabled/initialized by the firmware; talking to it may appear to work but it's really not
> a good idea (and breaks things likes suspend/resume etc).

(or in other words, many of the legacy PC things are not supposed to be there)

what did you want to use rtc0 for?



\
 
 \ /
  Last update: 2015-07-11 20:41    [W:0.036 / U:0.272 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site