From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from qmail34.e-mind.com ([188.94.192.34] helo=qmail.e-mind.com) by bombadil.infradead.org with smtp (Exim 4.87 #1 (Red Hat Linux)) id 1dOLAC-0003us-Sv for barebox@lists.infradead.org; Fri, 23 Jun 2017 09:46:07 +0000 References: <63687e34-f354-81d3-aed7-1a59866925c5@eurekelettronica.it> <2f43179e-2aa0-1dba-eafa-a9c0025afd24@eurekelettronica.it> <1487689380.2268.18.camel@pengutronix.de> <82857526-9f9a-2878-9b8e-070f124e2a41@eurekelettronica.it> <20170621063246.wdfct6r2boyx4xo3@pengutronix.de> <126e2527-f179-0c82-c384-c6c975a7c8e9@eurekelettronica.it> <1498045832.2904.105.camel@pengutronix.de> <3f12f02e-cccc-1edb-94d1-8cff2b69c808@eurekelettronica.it> <1498059009.2904.108.camel@pengutronix.de> From: gianluca Message-ID: Date: Fri, 23 Jun 2017 11:45:31 +0200 MIME-Version: 1.0 In-Reply-To: <1498059009.2904.108.camel@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: Fwd: Barebox 2017.02 works great but no Linux Framebuffer... :-/ To: Lucas Stach Cc: barebox@lists.infradead.org On 06/21/2017 05:30 PM, Lucas Stach wrote: > Am Mittwoch, den 21.06.2017, 17:18 +0200 schrieb gianluca: >> On 06/21/2017 01:50 PM, Lucas Stach wrote: >>> root@edelin:~# cat /proc/cmdline >>> console=ttymxc2,115200 rootwait noswap ip=none noinitrd rootfstype=nilfs2 \ >> > root=/dev/mmcblk1p3 fec.macaddr=0x7a,0x3f,0x03,0xe3,0xa2,0xff \ >> > system_rev=0xe3600000 system_serialnr=0x00000000 \ >> > lcd_type=am1280800n3tz fastboot quiet loglevel=3 console=tty0 \ >> > video=mxcfb0:dev=ldb,if=RGB24,bpp=32 \ >> > fbmem=32M vmalloc=400M imx-drm.legacyfb_depth=32 >> >> As you can see imx-drm.legacy_depth=32 is passed to the kernel from >> bootloader. > > The module is called "imxdrm" without a dash, so the correct way to > specify the parameter on the command line is "imxdrm.legacyfb_depth=32". > > I'm not sure what you are trying to achieve with the mxcfb and fbmem > parameters. They are certainly ignored by a mainline kernel. > It works now, the culprit was the name of the driver: imxdrm is the right one. Now a little bit off-topic question: - Is it better to use Xorg X11 (with a custom full screen application using Qt 5) [with all concerns about using a Debian Jessie for armhf, i.e.: imx-drm-vivante driver, opengl/opencl custom libraries etc.,...] or using a framebuffer Qt application??? I know the framebuffer does not have any acceleration, but I suppose the CPU (even the dual-core) is powerful enough to manage some simple transition of the application pages... What do you think about this? Regards, -- Eurek s.r.l. | Electronic Engineering | http://www.eurek.it via Celletta 8/B, 40026 Imola, Italy | Phone: +39-(0)542-609120 p.iva 00690621206 - c.f. 04020030377 | Fax: +39-(0)542-609212 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox