Hi,
On 09-06-16 09:53, Maxime Ripard wrote:
Hi Hans,
On Sat, Jun 04, 2016 at 08:10:54PM +0200, Hans de Goede wrote:
Hi All,
As part of testing that my "ARM: dts: sun5i: Move display blocks to sun5i.dtsi"
patch did not break anything I've been trying to get the sun4i-drm kms
driver to work on a q8 a13 tablet.
I've build the drm / panel bits as modules after doing :
[root@localhost ~]# insmod syscopyarea.ko
[root@localhost ~]# insmod sysfillrect.ko
[root@localhost ~]# insmod sysimgblt.ko
[root@localhost ~]# insmod fb_sys_fops.ko
[root@localhost ~]# insmod drm.ko
[root@localhost ~]# insmod drm_kms_helper.ko
[root@localhost ~]# insmod sun4i-tcon.ko
[root@localhost ~]# insmod sun4i_backend.ko
[root@localhost ~]# insmod panel-simple.ko
[root@localhost ~]# insmod sun4i-drm.ko
I get the following in dmesg:
[ 87.791338] [drm] Initialized drm 1.1.0 20060810
[ 113.883947] panel supply power not found, using dummy regulator
[ 119.199189] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 119.210695] [drm] No driver support for vblank timestamp query.
[ 119.238295] sun4i-drm display-engine: bound 1e60000.display-backend (ops
__mod_of__sun4i_backend_of_table_device_table [sun4i_backend])
[ 119.261666] sun4i-drm display-engine: bound 1c0c000.lcd-controller (ops
__mod_of__sun4i_tcon_of_table_device_table [sun4i_tcon])
[ 119.287566] checking generic (5fe89000 177000) vs hw (0 ffffffff)
[ 119.287599] fb: switching to sun4i-drm-fb from simple
[ 119.304752] Console: switching to colour dummy device 80x30
[ 119.319700] sun4i-drm display-engine: No connectors reported connected with
modes
[ 119.343392] [drm] Cannot find any crtc or sizes - going 1024x768
[ 119.374591] Console: switching to colour frame buffer device 128x48
[ 119.433258] sun4i-drm display-engine: fb0: frame buffer device
Esp. notice the "sun4i-drm display-engine: No connectors reported connected with
modes"
and "[drm] Cannot find any crtc or sizes - going 1024x768"
Which clearly is wrong, after this the lcd-panel display becomes
a mess, as if it is not getting any video data, which indeed
seems to be what is happening.
Which panel is it using? Have you added the panel timings to the
simple-panel driver?
This is using the dts patches from Chen-Yu which you've recent merged into next.
Regards,
Hans
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