On Tue, 13 Mar 2012 16:47:04 +0800, Dong Aisheng <[email protected]> wrote: > From: Dong Aisheng <[email protected]> > > This patch includes basic dt support which can boot via nfs rootfs. > > Signed-off-by: Dong Aisheng <[email protected]> > --- > Documentation/devicetree/bindings/arm/fsl.txt | 4 + > arch/arm/boot/dts/imx28-evk.dts | 31 +++++++++ > arch/arm/boot/dts/imx28.dtsi | 88 > +++++++++++++++++++++++++ > arch/arm/mach-mxs/Kconfig | 9 +++ > arch/arm/mach-mxs/Makefile | 1 + > arch/arm/mach-mxs/imx28-dt.c | 67 +++++++++++++++++++ > 6 files changed, 200 insertions(+), 0 deletions(-) > > diff --git a/Documentation/devicetree/bindings/arm/fsl.txt > b/Documentation/devicetree/bindings/arm/fsl.txt > index 54bddda..9f21faf 100644 > --- a/Documentation/devicetree/bindings/arm/fsl.txt > +++ b/Documentation/devicetree/bindings/arm/fsl.txt > @@ -1,6 +1,10 @@ > Freescale i.MX Platforms Device Tree Bindings > ----------------------------------------------- > > +i.MX28 Evaluation Kit > +Required root node properties: > + - compatible = "fsl,imx28-evk", "fsl,imx28"; > + > i.MX51 Babbage Board > Required root node properties: > - compatible = "fsl,imx51-babbage", "fsl,imx51"; > diff --git a/arch/arm/boot/dts/imx28-evk.dts b/arch/arm/boot/dts/imx28-evk.dts > new file mode 100644 > index 0000000..9758dc4 > --- /dev/null > +++ b/arch/arm/boot/dts/imx28-evk.dts > @@ -0,0 +1,31 @@ > +/* > + * Copyright 2012 Freescale Semiconductor, Inc. > + * > + * 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/ "imx28.dtsi" > + > +/ { > + model = "Freescale i.MX28 Evaluation Kit"; > + compatible = "fsl,imx28-evk", "fsl,imx28"; > + > + memory { > + device_type = "memory"; > + reg = <0x40000000 0x08000000>; > + }; > + > + ahb@80080000 { > + fec@800f0000 { > + phy-mode = "rmii"; > + local-mac-address = [00 04 9F 01 7D 5B];
Generally a bad idea to put a specific mac address into the device tree. Better to fill it with zeros. Otherwise all the dev boards will end up using the same value. > + status = "okay"; > + }; > + }; > +}; > diff --git a/arch/arm/boot/dts/imx28.dtsi b/arch/arm/boot/dts/imx28.dtsi > new file mode 100644 > index 0000000..acf0dab > --- /dev/null > +++ b/arch/arm/boot/dts/imx28.dtsi > @@ -0,0 +1,88 @@ > +/* > + * Copyright 2012 Freescale Semiconductor, Inc. > + * > + * 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 > + */ > + > +/include/ "skeleton.dtsi" > + > +/ { > + #address-cells = <1>; > + #size-cells = <1>; > + interrupt-parent = <&icoll>; > + > + aliases { > + serial0 = &uart1; > + }; > + > + cpus { > + cpu@0 { > + compatible = "arm,arm926ejs"; > + }; > + }; > + > + apb@80000000 { > + compatible = "simple-bus"; > + #address-cells = <1>; > + #size-cells = <1>; > + reg = <0x80000000 0x80000>; > + ranges; > + > + apbh@80000000 { > + compatible = "simple-bus"; > + #address-cells = <1>; > + #size-cells = <1>; > + reg = <0x80000000 0x3c900>; > + ranges; > + > + icoll: interrupt-controller@80000000 { > + compatible = "fsl,imx28-icoll"; > + interrupt-controller; > + #interrupt-cells = <1>; > + reg = <0x80000000 0x2000>; > + }; > + }; > + > + apbx@80040000 { > + compatible = "simple-bus"; > + #address-cells = <1>; > + #size-cells = <1>; > + reg = <0x80040000 0x40000>; > + ranges; > + > + uart1: uart@80074000 { > + compatible = "arm,pl011", "arm,primecell"; > + reg = <0x80074000 0x2000>; > + interrupts = <47>; > + }; > + }; What is the purpose of the apbh and apbx busses? Will more device nodes get added to them later, or does each only contain a single device? g. _______________________________________________ devicetree-discuss mailing list [email protected] https://lists.ozlabs.org/listinfo/devicetree-discuss
