From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by canuck.infradead.org with esmtps (Exim 4.72 #1 (Red Hat Linux)) id 1Q9G6H-0005Ce-VR for barebox@lists.infradead.org; Mon, 11 Apr 2011 12:20:15 +0000 From: Juergen Beisert Date: Mon, 11 Apr 2011 14:19:27 +0200 References: <6EE7D1502C48E44E92DCADF9DD3E0DB90187A40D5121@SRV-VS06.TELEVIC.COM> In-Reply-To: <6EE7D1502C48E44E92DCADF9DD3E0DB90187A40D5121@SRV-VS06.TELEVIC.COM> MIME-Version: 1.0 Content-Disposition: inline Message-Id: <201104111419.27542.jbe@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: lcd clock To: barebox@lists.infradead.org Vanalme Filip wrote: > Is there any specific reason why the (i.MX27) LCDC clocks are disabled in > imxfb_probe() (drivers\imx.c) ? > > #ifdef CONFIG_ARCH_IMX27 > PCCR0 &= ~PCCR0_LCDC_EN; > PCCR1 &= ~PCCR1_HCLK_LCDC; > #endif > > I would have expected the clocks to be enabled in that routine. > > I'm experimenting a little with Barebox's 'bmp' command. Although the > command did not return any error, I did not have any output on my lcd. Then > I noticed that the LCDC clocks were not enabled. If the clocks were not > enabled by default in the probe function, I would expect the enabling in > the bmp command code, e.g. with FBIO_ENABLE ioctl command. But, as far as I > can see, FBIO_ENABLE is not executed in the bmp command code. Try within barebox fb0.enable=1 This should enable the LCD controller on demand. jbe -- Pengutronix e.K. | Juergen Beisert | Linux Solutions for Science and Industry | Phone: +49-8766-939 228 | Vertretung Sued/Muenchen, Germany | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de/ | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox