[PATCH v2 3/4] arm: add basic support for Mediatek MT6589 boards
Maxime Ripard
maxime.ripard at free-electrons.com
Sat May 10 21:56:27 PDT 2014
Hi,
On Sun, May 11, 2014 at 03:41:02AM +0200, Matthias Brugger wrote:
> This adds a generic devicetree board file and a dtsi for boards
> based on the MT6589 SoCs from Mediatek.
>
> Apart from the generic parts (gic, clocks) the only component
> currently supported are the timers.
>
> Signed-off-by: Matthias Brugger <matthias.bgg at gmail.com>
> ---
> .../devicetree/bindings/arm/mediatek-mt65xx.txt | 8 ++
> .../devicetree/bindings/vendor-prefixes.txt | 1 +
> arch/arm/Kconfig | 2 +
> arch/arm/Makefile | 1 +
> arch/arm/boot/dts/mt6589.dtsi | 93 ++++++++++++++++++++++
> arch/arm/mach-mediatek/Kconfig | 6 ++
> arch/arm/mach-mediatek/Makefile | 1 +
> arch/arm/mach-mediatek/mediatek.c | 38 +++++++++
> 8 files changed, 150 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/arm/mediatek-mt65xx.txt
> create mode 100644 arch/arm/boot/dts/mt6589.dtsi
> create mode 100644 arch/arm/mach-mediatek/Kconfig
> create mode 100644 arch/arm/mach-mediatek/Makefile
> create mode 100644 arch/arm/mach-mediatek/mediatek.c
This probably should belong into different patches.
Something like:
- one to document the prefix
- one to add mach-mediatek
- one to add the DTSI
>
> diff --git a/Documentation/devicetree/bindings/arm/mediatek-mt65xx.txt b/Documentation/devicetree/bindings/arm/mediatek-mt65xx.txt
> new file mode 100644
> index 0000000..d6ac71f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/mediatek-mt65xx.txt
> @@ -0,0 +1,8 @@
> +Mediatek MT6589 Platforms Device Tree Bindings
> +
> +Boards with a SoC of the Mediatek MT6589 shall have the following property:
> +
> +Required root node property:
> +
> +compatible: must contain "mediatek,mt6589"
> +
> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
> index abc3080..73f9e4c 100644
> --- a/Documentation/devicetree/bindings/vendor-prefixes.txt
> +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
> @@ -75,6 +75,7 @@ linux Linux-specific binding
> lsi LSI Corp. (LSI Logic)
> marvell Marvell Technology Group Ltd.
> maxim Maxim Integrated Products
> +mediatek MediaTek Inc.
> microchip Microchip Technology Inc.
> mosaixtech Mosaix Technologies, Inc.
> moxa Moxa
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index db3c541..0fc8acd 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -997,6 +997,8 @@ source "arch/arm/mach-mv78xx0/Kconfig"
>
> source "arch/arm/mach-imx/Kconfig"
>
> +source "arch/arm/mach-mediatek/Kconfig"
> +
> source "arch/arm/mach-mxs/Kconfig"
>
> source "arch/arm/mach-netx/Kconfig"
> diff --git a/arch/arm/Makefile b/arch/arm/Makefile
> index 41c1931..8ce9774 100644
> --- a/arch/arm/Makefile
> +++ b/arch/arm/Makefile
> @@ -170,6 +170,7 @@ machine-$(CONFIG_ARCH_MSM) += msm
> machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0
> machine-$(CONFIG_ARCH_MVEBU) += mvebu
> machine-$(CONFIG_ARCH_MXC) += imx
> +machine-$(CONFIG_ARCH_MEDIATEK) += mediatek
> machine-$(CONFIG_ARCH_MXS) += mxs
> machine-$(CONFIG_ARCH_NETX) += netx
> machine-$(CONFIG_ARCH_NOMADIK) += nomadik
> diff --git a/arch/arm/boot/dts/mt6589.dtsi b/arch/arm/boot/dts/mt6589.dtsi
> new file mode 100644
> index 0000000..2af140d
> --- /dev/null
> +++ b/arch/arm/boot/dts/mt6589.dtsi
> @@ -0,0 +1,93 @@
> +/*
> + * Copyright (c) 2014 MundoReader S.L.
> + * Author: Matthias Brugger <matthias.bgg at gmail.com>
> + *
> + * 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.
> + *
> + * This program 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.
> + */
> +
> +#include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include "skeleton.dtsi"
> +
> +/ {
> + compatible = "mediatek,mt6589";
> + interrupt-parent = <&gic>;
> +
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cpu at 0 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a7";
> + reg = <0x0>;
> + };
> + cpu at 1 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a7";
> + reg = <0x1>;
> + };
> + cpu at 2 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a7";
> + reg = <0x2>;
> + };
> + cpu at 3 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a7";
> + reg = <0x3>;
> + };
> +
> + };
> +
> + clocks {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
> +
> + dummy13m: dummy13m {
> + compatible = "fixed-clock";
> + clock-frequency = <13000000>;
> + #clock-cells = <0>;
> + };
> +
> + dummy32k: dummy32k {
> + compatible = "fixed-clock";
> + clock-frequency = <32000>;
> + #clock-cells = <0>;
> + };
> + };
> +
> + soc {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + compatible = "simple-bus";
> + clock-ranges;
> + ranges;
> +
> + gic: interrupt-controller at 10212000 {
> + compatible = "arm,cortex-a9-gic";
cortex-a15-gic would probably be more appropriate?
> + interrupt-controller;
> + #interrupt-cells = <3>;
> + reg = <0x10211000 0x1000>,
> + <0x10212000 0x1000>,
> + <0x10214000 0x2000>,
> + <0x10216000 0x2000>;
> + };
> +
> + timer: timer at 10008000 {
> + compatible = "mediatek,mtk6589-timer";
> + reg = <0x10008000 0x80>;
> + interrupts = <GIC_SPI 113 IRQ_TYPE_EDGE_RISING>;
> + clocks = <&dummy13m>, <&dummy32k>;
> + };
Usually, we try to order the nodes by physical addresses in the DT.
> + };
> +};
> diff --git a/arch/arm/mach-mediatek/Kconfig b/arch/arm/mach-mediatek/Kconfig
> new file mode 100644
> index 0000000..2c043a2
> --- /dev/null
> +++ b/arch/arm/mach-mediatek/Kconfig
> @@ -0,0 +1,6 @@
> +config ARCH_MEDIATEK
> + bool "Mediatek MT6589 SoC" if ARCH_MULTI_V7
> + select ARM_GIC
> + select MTK_TIMER
> + help
> + Support for Mediatek Cortex-A7 Quad-Core-SoC MT6589.
> diff --git a/arch/arm/mach-mediatek/Makefile b/arch/arm/mach-mediatek/Makefile
> new file mode 100644
> index 0000000..43e619f
> --- /dev/null
> +++ b/arch/arm/mach-mediatek/Makefile
> @@ -0,0 +1 @@
> +obj-$(CONFIG_ARCH_MEDIATEK) += mediatek.o
> diff --git a/arch/arm/mach-mediatek/mediatek.c b/arch/arm/mach-mediatek/mediatek.c
> new file mode 100644
> index 0000000..0487fc7
> --- /dev/null
> +++ b/arch/arm/mach-mediatek/mediatek.c
> @@ -0,0 +1,38 @@
> +/*
> + * Device Tree support for Mediatek SoCs
> + *
> + * Copyright (c) 2014 MundoReader S.L.
> + * Author: Matthias Brugger <matthias.bgg at gmail.com>
> + *
> + * 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.
> + *
> + * This program 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.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/init.h>
> +#include <linux/of_platform.h>
> +#include <linux/irqchip.h>
> +#include <asm/mach/arch.h>
> +#include <asm/mach/map.h>
> +
> +static void __init mediatek_dt_init(void)
> +{
> + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
> +}
This is the default, you can remove it.
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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