On 20/09/2018 09:09, Jianxin Pan wrote:
> Try to add basic DT support for the Amlogic's Meson-G12A S905D2 SoC,
> which describe components as follows: Reserve Memory, CPU, GIC, IRQ,
> Timer, UART. It's capable of booting up into the serial console.
>
> Signed-off-by: Jianxin Pan <jianxin.pan@xxxxxxxxxxx>
> Reviewed-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
> ---
> arch/arm64/boot/dts/amlogic/Makefile | 1 +
> arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts | 22 +++
> arch/arm64/boot/dts/amlogic/meson-g12a.dtsi | 172 ++++++++++++++++++++++++
> 3 files changed, 195 insertions(+)
> create mode 100644 arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts
> create mode 100644 arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
>
> diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile
> index a97c0e2..c31f29d6 100644
> --- a/arch/arm64/boot/dts/amlogic/Makefile
> +++ b/arch/arm64/boot/dts/amlogic/Makefile
> @@ -1,5 +1,6 @@
> # SPDX-License-Identifier: GPL-2.0
> dtb-$(CONFIG_ARCH_MESON) += meson-axg-s400.dtb
> +dtb-$(CONFIG_ARCH_MESON) += meson-g12a-u200.dtb
> dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-nanopi-k2.dtb
> dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-nexbox-a95x.dtb
> dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-odroidc2.dtb
> diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts b/arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts
> new file mode 100644
> index 0000000..d267a37
> --- /dev/null
> +++ b/arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts
> @@ -0,0 +1,22 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright (c) 2018 Amlogic, Inc. All rights reserved.
> + */
> +
> +/dts-v1/;
> +
> +#include "meson-g12a.dtsi"
> +
> +/ {
> + compatible = "amlogic,u200", "amlogic,g12a";
> + model = "Amlogic Meson G12A U200 Development Board";
> +
> + aliases {
> + serial0 = &uart_AO;
> + };
Hi Jianxin,
Please add the /memory and /chosen nodes.
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+
+ memory@0 {
+ device_type = "memory";
+ reg = <0x0 0x0 0x0 0x40000000>;
+ };
Thanks,
Neil
> +};
> +
> +&uart_AO {
> + status = "okay";
> +};
> +
[...]
