From mboxrd@z Thu Jan 1 00:00:00 1970 From: s.hauer@pengutronix.de (Sascha Hauer) Date: Tue, 2 Aug 2011 08:58:14 +0200 Subject: [PATCH v3 1/2] arm/mx5: add device tree support for imx53 boards In-Reply-To: <1312226252-8566-2-git-send-email-shawn.guo@linaro.org> References: <1312226252-8566-1-git-send-email-shawn.guo@linaro.org> <1312226252-8566-2-git-send-email-shawn.guo@linaro.org> Message-ID: <20110802065814.GM31404@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Aug 02, 2011 at 03:17:31AM +0800, Shawn Guo wrote: > From: Shawn Guo > > It adds device tree support for imx53 boards. > > Signed-off-by: Shawn Guo > Cc: Grant Likely > Cc: Sascha Hauer > --- > .../devicetree/bindings/arm/fsl/boards.txt | 15 ++ > arch/arm/boot/dts/imx53-ard.dts | 158 +++++++++++++ > arch/arm/boot/dts/imx53-evk.dts | 144 ++++++++++++ > arch/arm/boot/dts/imx53-qsb.dts | 148 ++++++++++++ > arch/arm/boot/dts/imx53-smd.dts | 169 ++++++++++++++ > arch/arm/boot/dts/imx53.dtsi | 244 ++++++++++++++++++++ > arch/arm/mach-mx5/Kconfig | 12 + > arch/arm/mach-mx5/Makefile | 2 + > arch/arm/mach-mx5/board-mx53_ard.c | 9 +- > arch/arm/mach-mx5/board-mx53_evk.c | 5 + > arch/arm/mach-mx5/board-mx53_loco.c | 5 + > arch/arm/mach-mx5/board-mx53_smd.c | 5 + > arch/arm/mach-mx5/imx53-dt.c | 143 ++++++++++++ > arch/arm/plat-mxc/include/mach/common.h | 2 + > arch/arm/plat-mxc/include/mach/iomux-mx53.h | 5 + > arch/arm/plat-mxc/include/mach/iomux-v3.h | 5 + > 16 files changed, 1069 insertions(+), 2 deletions(-) > create mode 100644 Documentation/devicetree/bindings/arm/fsl/boards.txt > create mode 100644 arch/arm/boot/dts/imx53-ard.dts > create mode 100644 arch/arm/boot/dts/imx53-evk.dts > create mode 100644 arch/arm/boot/dts/imx53-qsb.dts > create mode 100644 arch/arm/boot/dts/imx53-smd.dts > create mode 100644 arch/arm/boot/dts/imx53.dtsi > create mode 100644 arch/arm/mach-mx5/imx53-dt.c I noticed that the iomux setup is gone for now which makes me very happy :) I didn't have a good feeling about this. > > diff --git a/arch/arm/boot/dts/imx53-ard.dts b/arch/arm/boot/dts/imx53-ard.dts > new file mode 100644 > index 0000000..fd0cf2c > --- /dev/null > +++ b/arch/arm/boot/dts/imx53-ard.dts > @@ -0,0 +1,158 @@ > +/* > + * Copyright 2011 Freescale Semiconductor, Inc. > + * Copyright 2011 Linaro Ltd. > + * > + * The code contained herein is licensed under the GNU General Public > + * License. You may obtain a copy of the GNU General Public License > + * Version 2 or later at the following locations: > + * > + * http://www.opensource.org/licenses/gpl-license.html > + * http://www.gnu.org/copyleft/gpl.html > + */ > + > +/dts-v1/; > +/include/ "imx53.dtsi" > + > +/ { > + model = "Freescale i.MX53 Automotive Reference Design Board"; > + compatible = "fsl,imx53-ard", "fsl,imx53"; > + > + chosen { > + bootargs = "console=ttymxc0,115200 root=/dev/mmcblk0p3 rootwait"; > + }; > + > + memory { > + reg = <0x70000000 0x40000000>; > + }; > + > + aips at 50000000 { /* AIPS1 */ > + spba at 50000000 { > + esdhc at 50004000 { /* ESDHC1 */ > + cd-gpios = <&gpio0 1 0>; /* GPIO1_1 */ > + wp-gpios = <&gpio0 9 0>; /* GPIO1_9 */ > + }; > + > + esdhc at 50008000 { /* ESDHC2 */ > + status = "disabled"; > + }; I know the decision is that all devices are enabled by default and must be explicitely disabled like this. I really hope we can change this in the future for the following reasons: - The imx53 device tree is not complete, several devices like nand, ipu and rtc are missing. Now when imx53.dtsi gets the nand device, all board devicetrees have to be changed to keep the old behaviour. - Most enabled device entries like the esdhc1 above have additional nodes like cd-gpios anyway, so they must appear in the board tree whereas the disabled devices just add additional churn. -- 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 |