[PATCH 5/7] ARM: meson: dts: add basic Meson/Meson6/Meson6-atv1200 DTSI/DTS
Andreas Färber
afaerber at suse.de
Sat Aug 23 04:27:55 PDT 2014
Hi,
Am 17.08.2014 12:49, schrieb Carlo Caione:
> The Meson6 SoC is produced by Amlogic inc. and it is based on 2 Cortex A9
> and an ARM Mali-400 GPU.
> This patch adds two basic DTSI for the preliminary support of Meson and
> Meson6 SoCs. Another DTS is also added for supporting the atv1200 board,
> produced by Geniatech inc.
>
> Signed-off-by: Carlo Caione <carlo at caione.org>
> ---
> arch/arm/boot/dts/Makefile | 1 +
> arch/arm/boot/dts/meson.dtsi | 75 ++++++++++++++++++++++++++++++++++++
> arch/arm/boot/dts/meson6-atv1200.dts | 27 +++++++++++++
> arch/arm/boot/dts/meson6.dtsi | 44 +++++++++++++++++++++
> 4 files changed, 147 insertions(+)
> create mode 100644 arch/arm/boot/dts/meson.dtsi
> create mode 100644 arch/arm/boot/dts/meson6-atv1200.dts
> create mode 100644 arch/arm/boot/dts/meson6.dtsi
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index b8c5cd3..604acce 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -159,6 +159,7 @@ dtb-$(CONFIG_MACH_KIRKWOOD) += kirkwood-b3.dtb \
> kirkwood-ts419-6282.dtb
> dtb-$(CONFIG_ARCH_LPC32XX) += ea3250.dtb phy3250.dtb
> dtb-$(CONFIG_ARCH_MARCO) += marco-evb.dtb
> +dtb-$(CONFIG_MACH_MESON6) += meson6-atv1200.dtb
> dtb-$(CONFIG_ARCH_MOXART) += moxart-uc7112lx.dtb
> dtb-$(CONFIG_ARCH_MXC) += \
> imx25-eukrea-mbimxsd25-baseboard.dtb \
> diff --git a/arch/arm/boot/dts/meson.dtsi b/arch/arm/boot/dts/meson.dtsi
> new file mode 100644
> index 0000000..934bb2c
> --- /dev/null
> +++ b/arch/arm/boot/dts/meson.dtsi
> @@ -0,0 +1,75 @@
> +/*
> + * Copyright 2014 Carlo Caione <carlo at caione.org>
> + *
> + * This program 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.
> + */
> +
> +/include/ "skeleton.dtsi"
> +
> +/ {
> + interrupt-parent = <&gic>;
> +
> + aliases {
> + serial0 = &uart_AO;
> + serial1 = &uart_A;
> + serial2 = &uart_B;
> + serial3 = &uart_C;
> + };
> +
> + gic: interrupt-controller at c4301000 {
> + compatible = "arm,cortex-a9-gic";
> + reg = <0xc4301000 0x1000>,
> + <0xc4300100 0x0100>;
> + interrupt-controller;
> + #interrupt-cells = <3>;
> + };
> +
> + timer at c1109940 {
> + compatible = "amlogic,meson6-timer";
> + reg = <0xc1109940 0x14>;
> + interrupts = <0 10 1>;
> + };
> +
> + soc at c8100000 {
> + compatible = "simple-bus";
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
> +
> + uart_AO: serial at c81004c0 {
> + compatible = "amlogic,meson-uart";
> + reg = <0xc81004c0 0x14>;
> + interrupts = <0 90 1>;
> + clocks = <&clk81>;
> + status = "disabled";
> + };
> +
> + uart_A: serial at c81084c0 {
> + compatible = "amlogic,meson-uart";
> + reg = <0xc81084c0 0x14>;
> + interrupts = <0 90 1>;
> + clocks = <&clk81>;
> + status = "disabled";
> + };
> +
> + uart_B: serial at c81084dc {
> + compatible = "amlogic,meson-uart";
> + reg = <0xc81084dc 0x14>;
> + interrupts = <0 90 1>;
> + clocks = <&clk81>;
> + status = "disabled";
> + };
> +
> + uart_C: serial at c8108700 {
> + compatible = "amlogic,meson-uart";
> + reg = <0xc8108700 0x14>;
> + interrupts = <0 90 1>;
> + clocks = <&clk81>;
> + status = "disabled";
> + };
> + };
> +}; /* end of / */
> +
Trailing blank line.
> diff --git a/arch/arm/boot/dts/meson6-atv1200.dts b/arch/arm/boot/dts/meson6-atv1200.dts
> new file mode 100644
> index 0000000..b358402
> --- /dev/null
> +++ b/arch/arm/boot/dts/meson6-atv1200.dts
> @@ -0,0 +1,27 @@
> +/*
> + * Copyright 2014 Carlo Caione <carlo at caione.org>
> + *
> + * This program 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.
> + */
> +
> +/dts-v1/;
> +/include/ "meson6.dtsi"
> +
> +/ {
> + model = "Geniatech ATV1200";
> + compatible = "geniatech,atv1200";
> +
> + memory {
> + reg = <0x40000000 0x80000000>;
> + };
> +
> + soc at c8100000 {
> + uart_AO: serial at c81004c0 {
> + status = "okay";
> + };
> + };
> +}; /* end of / */
> +
Since this is a new SoC, just override the status down here:
&uart_A0 {
status = "okay";
};
That decouples it from how you name the SoC node exactly.
> diff --git a/arch/arm/boot/dts/meson6.dtsi b/arch/arm/boot/dts/meson6.dtsi
> new file mode 100644
> index 0000000..d62add4
> --- /dev/null
> +++ b/arch/arm/boot/dts/meson6.dtsi
> @@ -0,0 +1,44 @@
> +/*
> + * Copyright 2014 Carlo Caione <carlo at caione.org>
> + *
> + * This program 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.
> + */
> +
> +/include/ "meson.dtsi"
> +
> +/ {
> + model = "Amlogic Meson6 SoC";
> + compatible = "amlogic,meson6", "amlogic,8726_mx";
In the cover letter you said AML8726-MX - why underscore here?
In 3.17-rc1 at least I don't see the amlogic prefix documented. If so,
you should probably add it to
Documentation/devicetree/bindings/vendor-prefixes.txt. Similarly, should
you document some of those amlogic,* compatible strings in a new
.../bindings/arm/amlogic.txt file?
Same applies to geniatech further above. checkpatch.pl should warn about
undocumented compatible strings.
Cf.
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/submitting-patches.txt
> +
> + interrupt-parent = <&gic>;
> +
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cpu at 0 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a9";
> + reg = <0x200>;
> + };
> +
> + cpu at 1 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a9";
> + reg = <0x1>;
> + };
> + };
> +
> + clocks {
> + #address-cells = <1>;
> +
> + clk81: clk at 0 {
> + #clock-cells = <0>;
> + compatible = "fixed-clock";
> + clock-frequency = <200000000>;
> + };
> + };
> +}; /* end of / */
Cheers,
Andreas
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