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 1PGC3p-0005Pc-7a for barebox@lists.infradead.org; Wed, 10 Nov 2010 14:54:08 +0000 Received: from octopus.hi.pengutronix.de ([2001:6f8:1178:2:215:17ff:fe12:23b0]) by metis.ext.pengutronix.de with esmtp (Exim 4.71) (envelope-from ) id 1PGC3l-00049H-5c for barebox@lists.infradead.org; Wed, 10 Nov 2010 15:54:01 +0100 Received: from sha by octopus.hi.pengutronix.de with local (Exim 4.69) (envelope-from ) id 1PGC3l-0001yX-4b for barebox@lists.infradead.org; Wed, 10 Nov 2010 15:54:01 +0100 From: Sascha Hauer Date: Wed, 10 Nov 2010 15:53:46 +0100 Message-Id: <1289400839-5937-1-git-send-email-s.hauer@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 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: add i.MX51 Nand support To: barebox@lists.infradead.org Hi all, The following series is a respin of the series adding i.MX51 Nand support to the kernel for barebox. The series reveals to problems in barebox. First the i.MX51 Nand controller needs two memory resources. Since I know that Jean-Christophe recently worked on adding resources to barebox I decided for a hack in the driver for now: I just hardcoded the second base address. Second the current implementation of dma_alloc_coherent stinks. The implementation simply maps the whole SDRAM a second time uncached. This way we can use the normal malloc function to allocate dma coherent memory and just add a known offset to the returned pointer. On i.MX51 boards with 512MB SDRAM we do not have enough space in the memory map to map the SDRAM twice, in my case the mapping shadowed the Nand register space. Be aware of this when you try to add Nand support to your i.MX51 board and use the babbage code as a template. Sascha The following changes since commit 6a84a019abf0663c27c2c41e69cf0aea1dce19e9: i.MX device macros: Fix typo (2010-11-10 10:46:03 +0100) are available in the git repository at: git://git.pengutronix.de/git/barebox.git imx51-nand Sascha Hauer (13): NAND: reset chips before usage like the kernel does imx_nand: remove 0xe00 offset from registers imx_nand: rework get_dev_status imx nand: remove unnecessary register write imx_nand: make some internally used functions overwriteable imx nand: do not read-modify-write SPAS register imx nand: add V1_V2 namespace to registers mxc_nand: fix correct_data function imx nand: move initialization to preset function imx nand: introduce overwritable check_int function imx nand: Add v3 (i.MX51) support fb: set id for framebuffer device correctly ARM i.MX51: Add nand device arch/arm/mach-imx/include/mach/devices-imx51.h | 5 + arch/arm/mach-imx/include/mach/imx51-regs.h | 2 + arch/arm/mach-imx/nand.c | 9 + drivers/mtd/nand/Kconfig | 4 +- drivers/mtd/nand/nand_base.c | 6 + drivers/mtd/nand/nand_imx.c | 718 ++++++++++++++++-------- drivers/video/fb.c | 1 + 7 files changed, 494 insertions(+), 251 deletions(-) _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox