[Letux-kernel] LetuxOS Kernel v5.0-rc1

H. Nikolaus Schaller hns at goldelico.com
Tue Mar 19 13:30:17 CET 2019


> Am 19.03.2019 um 13:16 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
> 
> 
>> Am 19.03.2019 um 12:52 schrieb Andreas Kemnade <andreas at kemnade.info>:
>> 
>> On Mon, 18 Mar 2019 21:04:14 +0100
>> H. Nikolaus Schaller <hns at goldelico.com> wrote:
>> 
>>> Hi,
>>> I have now rebased our tree to v5.0-rc1. Was not very difficult. Just 3 or 4 almost obvious
>>> minor merge conflicts.
>>> 
>>> Unfortunately there is always something broken afterwards...
>>> 
>>> This time it is the display of the GTA04 :(
>>> Backlight works and can be controlled by "xset dpms" but the panel shows all white pixels.
>>> Pyra and BeagleBoneBlack + LCD both work this time.
>>> 
>>> Some first observations from initial tests:
>>> * Pyra:		bluetooth uart does not respond (wifi works)
>>> * GTA04A4:	backlight ok, display shows white pixels only
>> 
>> hmm, did a quick test with mainline: older dtb + 5.1-rc1 kernel = display ok
>> 5.1-rc1 kernel + dtb-5-1-rc1 (both mainline) = black screen
> 
> Interesting. I did this:
> 
> iMac:master hns$ git diff letux-5.0 letux-5.1-rc1 -- arch/arm/boot/dts/omap3-gta04.dtsi
> iMac:master hns$ git diff letux-5.0 letux-5.1-rc1 -- arch/arm/boot/dts/omap3-gta04a4.dts 
> iMac:master hns$ git diff letux-5.0 letux-5.1-rc1 -- arch/arm/boot/dts/omap3.dts 
> iMac:master hns$ git diff letux-5.0 letux-5.1-rc1 -- arch/arm/boot/dts/omap36xx.dts 
> iMac:master hns$
> 
> So there are no obvious differences between dts...
> 
> I think we have to use the dtc to disassemble the binaries (sorted by node) and then
> diff.

Hm...

Unless I did something wrong, the diff is empty!? Even the binaries do match:

iMac:master hns$ ls -l build/letux-5.0/device-trees/omap3-gta04a4.dtb 
-rw-r--r--  1 hns  staff  71513  8 Mär 21:35 build/letux-5.0/device-trees/omap3-gta04a4.dtb
iMac:master hns$ ls -l build/letux-5.1-rc1/device-trees/omap3-gta04a4.dtb 
-rw-r--r--  1 hns  staff  71513 18 Mär 20:10 build/letux-5.1-rc1/device-trees/omap3-gta04a4.dtb
iMac:master hns$ diff build/letux-5.0/device-trees/omap3-gta04a4.dtb  build/letux-5.1-rc1/device-trees/omap3-gta04a4.dtb
iMac:master hns$ 

Strange.

BR,
Nikolaus


More information about the Letux-kernel mailing list