On Sun, Oct 25, 2015 at 11:20:56PM +0530, Afzal Mohammed wrote:
> Minimal Cortex-M4 device tree to boot Linux to shell. M4 is booted via
> Cortex-A5 running Linux using Stefan Agner's <stefan@xxxxxxxx> "m4boot"
> utility.
>
> Signed-off-by: Afzal Mohammed <afzal.mohd.ma@xxxxxxxxx>
Stefan,
Are you okay with this patch?
Shawn
> ---
> arch/arm/boot/dts/Makefile | 1 +
> arch/arm/boot/dts/vf610m4-cosmic.dts | 90 ++++++++++++++++++++++++++++++++++++
> 2 files changed, 91 insertions(+)
> create mode 100644 arch/arm/boot/dts/vf610m4-cosmic.dts
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index bb8fa023d574..06a1a7a1d104 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -347,6 +347,7 @@ dtb-$(CONFIG_SOC_VF610) += \
> vf610-colibri-eval-v3.dtb \
> vf610m4-colibri.dtb \
> vf610-cosmic.dtb \
> + vf610m4-cosmic.dtb \
> vf610-twr.dtb
> dtb-$(CONFIG_ARCH_MXS) += \
> imx23-evk.dtb \
> diff --git a/arch/arm/boot/dts/vf610m4-cosmic.dts b/arch/arm/boot/dts/vf610m4-cosmic.dts
> new file mode 100644
> index 000000000000..8944a2d2054c
> --- /dev/null
> +++ b/arch/arm/boot/dts/vf610m4-cosmic.dts
> @@ -0,0 +1,90 @@
> +/*
> + * Device tree for Cosmic+ VF6xx Cortex-M4 support
> + *
> + * Copyright (C) 2015
> + *
> + * Based on vf610m4 Colibri
> + *
> + * This file is dual-licensed: you can use it either under the terms
> + * of the GPL or the X11 license, at your option. Note that this dual
> + * licensing only applies to this file, and not this project as a
> + * whole.
> + *
> + * a) This file is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation; either version 2 of the
> + * License, or (at your option) any later version.
> + *
> + * This file is distributed in the hope that it will be useful
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * Or, alternatively
> + *
> + * b) Permission is hereby granted, free of charge, to any person
> + * obtaining a copy of this software and associated documentation
> + * files (the "Software"), to deal in the Software without
> + * restriction, including without limitation the rights to use
> + * copy, modify, merge, publish, distribute, sublicense, and/or
> + * sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following
> + * conditions:
> + *
> + * The above copyright notice and this permission notice shall be
> + * included in all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED , WITHOUT WARRANTY OF ANY KIND
> + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
> + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
> + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
> + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY
> + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + * OTHER DEALINGS IN THE SOFTWARE.
> + */
> +
> +/dts-v1/;
> +#include "vf610m4.dtsi"
> +
> +/ {
> + model = "VF610 Cortex-M4";
> + compatible = "fsl,vf610m4";
> +};
> +
> +&gpio0 {
> + status = "disabled";
> +};
> +
> +&gpio1 {
> + status = "disabled";
> +};
> +
> +&gpio2 {
> + status = "disabled";
> +};
> +
> +&gpio3 {
> + status = "disabled";
> +};
> +
> +&gpio4 {
> + status = "disabled";
> +};
> +
> +&uart3 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_uart3>;
> + status = "okay";
> +};
> +
> +&iomuxc {
> + vf610-cosmic {
> + pinctrl_uart3: uart3grp {
> + fsl,pins = <
> + VF610_PAD_PTA20__UART3_TX 0x21a2
> + VF610_PAD_PTA21__UART3_RX 0x21a1
> + >;
> + };
> + };
> +};
> --
> 2.5.1
>
>
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