From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?QW5kcmVhcyBGw6RyYmVy?= Subject: Re: [PATCH V6 0/8] drm/exynos: few patches to enhance bridge chip support Date: Thu, 31 Jul 2014 12:28:00 +0200 Message-ID: <53DA1A30.4070509@suse.de> References: <1406316130-4744-1-git-send-email-ajaykumar.rs@samsung.com> <53D5435B.8030305@suse.de> <53D783CC.2080108@suse.de> <53D9484A.1070905@suse.de> <53DA0513.3080602@suse.de> <20140731102348.GC7458@ulmo> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="oNvHOiNqkbrDO6w2KfPcX4FnT158lXRDm" Return-path: In-Reply-To: <20140731102348.GC7458@ulmo> Sender: linux-samsung-soc-owner@vger.kernel.org To: Thierry Reding Cc: Ajay kumar , Ajay Kumar , "dri-devel@lists.freedesktop.org" , "linux-samsung-soc@vger.kernel.org" , "devicetree@vger.kernel.org" , InKi Dae , Rob Clark , Daniel Vetter , Sean Paul , Jingoo Han , sunil joshi , Prashanth G , Doug Anderson , Javier Martinez Canillas List-Id: devicetree@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --oNvHOiNqkbrDO6w2KfPcX4FnT158lXRDm Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Am 31.07.2014 12:23, schrieb Thierry Reding: > On Thu, Jul 31, 2014 at 10:57:55AM +0200, Andreas F=C3=A4rber wrote: >> Am 31.07.2014 10:38, schrieb Ajay kumar: > [...] >>> With just the spring-bridge.v6 branch of your own tree, I am able to = see >>> bootup logo on Skate(a variant of spring which also contains ps8622).= >>> I have tried both exynos_defconfig and multi_v7_defconfig. >>> I enable DRM, EXYNOS DRM, BRIDGE CHIPS, IOMMU, EXYNOS IOMMU >>> in configs. >>> >>> Even in your bootlogs, I can see DP getting probed. >>> And, you say backlight is also visible. That means entire display >>> path should be fine. Its just that you should start writing to the bu= ffer. >>> Have you enabled boot logos? >> >> Let me clarify: U-Boot uses the display [*], so it is powered and I se= e >> penguins initially. Then, when drm gets initialized, the screen goes >> black and no longer prints kernel messages or systemd output or X11 gd= m >> login screen. >=20 > Who's displaying the penguins? If you're referring to the Linux boot > logo then it shouldn't be displayed at all until after DRM has been > initialized (and the framebuffer console been set up). Yes, I'm referring to the default boot logo, but before the boot messages (console=3Dtty1) indicate that [drm] driver is being initialized= =2E >> Since drm stuff is the only variance here and it works with simplefb, >> surely something prints to some buffer! >=20 > If you have something like simplefb enabled in addition to a DRM driver= , > then perhaps the DRM driver isn't properly taking over the framebuffer > console. Okay, that's worth a try. Around v4 of this series it was not a problem. Thanks, Andreas --=20 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 N=C3=BCrnberg, Germany GF: Jeff Hawn, Jennifer Guild, Felix Imend=C3=B6rffer; HRB 16746 AG N=C3=BC= rnberg --oNvHOiNqkbrDO6w2KfPcX4FnT158lXRDm Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAEBAgAGBQJT2ho2AAoJEPou0S0+fgE/py8QAKfLqMssSWEKIiJY5/FwtvOV +7pgtILS/IzejxYnm1DQjgXnevUcVlGG/ZB+C6avFW582pRhTHsxzTBcFGFzBrcE dabq+ssVWcesoMqkYFXL4q9HBWj29ZBqXUUvKjr6+7/JvGAQ/xiMLonuJ3rsU3hE 3WBzR2SEyKMnQiPm9Mp4MP91AZPBcbMGeCpORpSFKTIRHkilbjS0jHmRo42Ns/P+ jD0GaHgQPlHsmWh/471PmyLV5MJ8a/QLCOCTPrjWkOU9siZQoHjS4843K2PwbwtC qGbDNEIcigA9bH0lS68W29VtseNvea5JHDZ7it4z3GnUyszLojZB1xU9cbSEly7H zI3YlQBhQU6RZJK1/c4ArExUoRM4MOUwdCTMrzppYVcZpF6lmr5DT1sza2fPRGuh DYme4iwDjRfD9/LdBH1DlH6Dl8k/dp6S3dj5cCaCoplK2SJ7ocFdNnoASZsCPEad ATja9qqzBwKF8YQ3wq/qH+kWOCUhMKGKBKaOtF1s2bntuuu0W20O3UtPUA72LO8X kyKFscVyANprWsiV2bC+0XSbSmM/wiS4L7eGAO5vN8YTE2Snad1fOMO3oDGdiUxR QBGjB2fDC2HU16jcUsMjzKMR+qlanlMNUlUdCPKvFBnuGdHFN2/pRQg+9w+iAEd8 xDITEafO+/6vM9OE6OZ1 =5MnN -----END PGP SIGNATURE----- --oNvHOiNqkbrDO6w2KfPcX4FnT158lXRDm--