From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dennis Gilmore Subject: Re: bug in autoloading of imx-ipuv3-crtc Date: Thu, 21 Apr 2016 12:37:28 -0500 Message-ID: <1668410.ik7sLCmBP7@anubis.ausil.us> References: <6926808.b0joqYQPQE@anubis.ausil.us> <1513165.9WxCa41tI1@anubis.ausil.us> <20160420230317.GT29108@pengutronix.de> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0403348440274023577==" Return-path: In-Reply-To: <20160420230317.GT29108@pengutronix.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Uwe =?ISO-8859-1?Q?Kleine=2DK=F6nig?= Cc: kernel@pengutronix.de, Russell King - ARM Linux , linux-arm-kernel@lists.infradead.org, dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============0403348440274023577== Content-Type: multipart/signed; boundary="nextPart1502474.VMUsQWBsu6"; micalg="pgp-sha256"; protocol="application/pgp-signature" --nextPart1502474.VMUsQWBsu6 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="iso-8859-1" On Thursday, April 21, 2016 1:03:17 AM CDT Uwe Kleine-K=F6nig wrote: > Hello, >=20 > On Tue, Apr 19, 2016 at 03:16:01PM -0500, Dennis Gilmore wrote: > > On Tuesday, April 19, 2016 2:27:17 PM CDT Dennis Gilmore wrote: > > > On Tuesday, April 19, 2016 7:50:49 PM CDT Russell King - ARM Linux=20 wrote: > > > > On Tue, Apr 19, 2016 at 01:34:23PM -0500, Dennis Gilmore wrote: > > > > > on all of my i.MX6 systems imx-ipuv3-crtc ius not getting > > > > > automatically > > > > > loaded. Everything is built as a module > > > > >=20 > > > > > CONFIG_DRM_IMX=3Dm > > > > > CONFIG_DRM_IMX_FB_HELPER=3Dm > > > > > CONFIG_DRM_IMX_HDMI=3Dm > > > > > CONFIG_DRM_IMX_IPUV3=3Dm > > > > > CONFIG_DRM_IMX_LDB=3Dm > > > > > CONFIG_DRM_IMX_PARALLEL_DISPLAY=3Dm > > > > > CONFIG_DRM_IMX_TVE=3Dm > > > > > CONFIG_IMX_IPUV3_CORE=3Dm > > > > >=20 > > > > > The result is that until I log in via serial or ssh and modprobe = the > > > > > module there is no display. I suspect that there is some devicet= ree > > > > > glue missing 4.4 and 4.5 seem to both be effected. > > > >=20 > > > > DT doesn't come into it for imx-ipuv3-crtc - these platform devices > > > > are > > > > created by drivers/gpu/ipu-v3/ipu-common.c itself. > > > >=20 > > > > drivers/gpu/drm/imx/ipuv3-crtc.c contains the proper module alias > > > > which > > > > should result in the module loaded at boot time when the > > > > imx-ipuv3-crtc > > > > devices are created. > > > >=20 > > > > Could the problem be that imx-ipu-v3 isn't being loaded? However, > > > > again, > > > > it looks to me like everything is correct there. > > > >=20 > > > > Are you saying that this used to work in older kernel versions like > > > > 4.3, > > > > but stopped in 4.4? > > >=20 > > > yers it used to work and stopped working. I would need to go back and > > > test > > > old kernels to figure out where it broke. > >=20 > > after installing some old kernels it broke with 4.4-rc4 which included a > > patch with teh subject of "drm/imx: Remove of_node assignment from > > ipuv3-crtc driver probe" >=20 > Just to be sure: 4.4-rc4 with 407c9eba7897 ("drm/imx: Remove of_node > assignment from ipuv3-crtc driver probe") reverted works fine for you? I can confirm that reverting just that patch makes things work again Dennis >=20 > Best regards > Uwe --nextPart1502474.VMUsQWBsu6 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part. Content-Transfer-Encoding: 7Bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAABCAAGBQJXGQ/YAAoJEH7ltONmPFDRU4UP/ib38nBrclHZEAoXfwS183im IyUyLhtm3QjrMBokRdjbFhdu53GumEHNIhyMPUM5V4gJGl6L9+hbjHz1n2o7jEIj httzrFcgzBYmClZ6L52VC+LGF+OfaYAdzEJnrnJSk3bZH/ffVvKQrWyfGLMfgzuN an9aDnXFgPhNvs3WF/lfZ6yzseWHQ9U7NKa3KlsECVd9fpWjHSXHw2QCb2aQIjTX mlOzBdkdijyNFxX2MZSWFweipic3ShgKlHYtN76KwZ2tTQqdqUEU2Hyat0G2PjlH NU9Q5kyMIXukjTofkjdxT2A6LjiVWdL/pS3UR7dLm6XUNglWEv5qQgm38w2K7vjk 6/YEzP5c2WvsZfG4nEysWLgfDXj4pTPkm34PCGgghhCn91SysKc+brsVGQD7p+Cc lzEQ5iM+T9bW9JxGXjD9RmMysK6S07pV9iPWOwtetm99E/NCjdpe6zioDGyQz5VZ AfMsg2l/fTnl/muuJufSEZ2VBUGTBaY356/0NKSS6QtvW35qJvRUpCxktl2li9fa D40pH+OqWMYFxYilwEmbUMSq7JXz10kbIMoefoAyKg716jZhvP9CUwJN5FBOHy7Z WYrJJvn1X+dGi2ZCrLTFYbsACxxmf8+WRIWJvL/tveA78J9p/xUWkovGxzReHoe8 DZBPdGw5WfmkT6kHsupn =ZymS -----END PGP SIGNATURE----- --nextPart1502474.VMUsQWBsu6-- --===============0403348440274023577== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============0403348440274023577==--