From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i7fzG-0004Uh-I2 for barebox@lists.infradead.org; Tue, 10 Sep 2019 13:15:16 +0000 Date: Tue, 10 Sep 2019 15:15:12 +0200 From: Sascha Hauer Message-ID: <20190910131512.7u5vmtuvi2i4culs@pengutronix.de> References: <20190717170604.23732-1-a.fatoum@pengutronix.de> <20190717170604.23732-6-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190717170604.23732-6-a.fatoum@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" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: [PATCH v3 5/6] clk: imx6: Fix procedure to switch the parent of LDB_DI_CLK To: Ahmad Fatoum Cc: Andrey Smirnov , barebox@lists.infradead.org Hi Ahmad, On Wed, Jul 17, 2019 at 07:06:03PM +0200, Ahmad Fatoum wrote: > From: Fabio Estevam > > Due to incorrect placement of the clock gate cell in the ldb_di[x]_clk > tree, the glitchy parent mux of ldb_di[x]_clk can cause a glitch to > enter the ldb_di_ipu_div divider. If the divider gets locked up, no > ldb_di[x]_clk is generated, and the LVDS display will hang when the > ipu_di_clk is sourced from ldb_di_clk. I haven't investigates any further, but this one breaks NAND support at least on my phyCORE i.MX6 board. With this patch applied we get: MXS: Timeout resetting block via register 0x00112000 mxs_nand 112000.gpmi-nand@112000.of: probe failed: Connection timed out Does this patch disable any clocks necessary for NAND? Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox