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 16:22:24 +0200 Message-ID: <53DA5120.7080709@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="Jj22w1ESj3FXg4dtXNTxxa4BSwH1I5PCg" Return-path: In-Reply-To: <20140731102348.GC7458@ulmo> Sender: linux-samsung-soc-owner@vger.kernel.org To: Thierry Reding , Ajay kumar Cc: 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: dri-devel@lists.freedesktop.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --Jj22w1ESj3FXg4dtXNTxxa4BSwH1I5PCg 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. [...] > 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. So, with simplefb reverted in U-Boot and ... * with just the v6 applied (...~2), I get only a black screen from Linux, no penguins, but the backlight seems on. System comes up okay, ssh available, and nothing stands out in dmesg. * with the two iommu patches on top, something breaks badly, no backlight, no USB/network, system inaccessible. I.e. U-Boot had no noticeable impact on these symptoms. * with the iommu patches, but dp-controller, ps8622, panel commented out, I do get backlight but USB/network not working, system inaccessible.= With simplefb support in U-Boot and with just v6 applied, but dp-controller, ps8622, panel commented out, things work as well as before, i.e. this series has no bad side effects. Note that I never claimed Ajay's series were broken, just reported that things regressed for me from v4, which may well be DT-related. The iommu patches interfere with my USB somehow (none or not all devices powered; with v4, plugging my wifi dongle led to oops but ethernet dongle worked, so not entirely new symptom), which is bad since my rootfs is on USB. The internal SDIO-connected Wifi is not enabled yet, so USB based network is my only alternative to a working display once we reach userspace. Regards, 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 --Jj22w1ESj3FXg4dtXNTxxa4BSwH1I5PCg 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) iQIcBAEBAgAGBQJT2lEgAAoJEPou0S0+fgE/hEIP/jL6jCLIqAk4IEFn3H9qhb4/ R4DHefa6lfUtOmpJ0pdgyo3KHpqog7OAZUzr6k79b8d5KGTCfpQrSDzHsKCmaGE5 pPtQn03mH5LFj12xsdIFG51SdqVp6fp2czPQmxjFTT1epwBFsMpuEOOIJ0/ABFcr bKtt7v+n+lI4nGATw2+PPGgDqa7jOrSa6dNnO6nkGd7dyIIt+IrDM+LUgGEsiHM8 O7bw3L1IP4mJ/xJNiVqK6QQfZZT190K0sRD8O6HPlwobAnaBQ8Le43G4QgoaYbqW Xdm9F7cacdvOehlfNNEa2F5adAMerK3CrPBn2vO55d0Qo1+LiGHc9zirBhNluW+o 66xRLw1KpiPPGrX8tPQ0ldfuV33Wv2XzZ83KWIvokci1iD7Z/s5iBwfcwnr52OU5 yMnYuKLsKViw+iWNIqVxc2YMbakhbC8IWUPHh+nR+t/++vYNDMYMatEzs7BbL9Wc FVkXc+gCvJY/CK70gI3GUv5LGNZLKfFla23Nfex7sgqj87NnNHLWH3n7Hg8YxDiF Fug4/5h8eVV61LjEoTyoShxqaq6XDAgWwuw+X1z3CRv7GWjk6wLAVnPXcOVipr7m m6uG89gJOmX0KBnpYgP06zwtkLnsD/+ZASnuTAIelnPRmGKeRNLGxDSvA51NpwS6 vloN1n3gVMaQ/VCQPU7X =Pita -----END PGP SIGNATURE----- --Jj22w1ESj3FXg4dtXNTxxa4BSwH1I5PCg--