[PATCH v2 3/4] arm: add basic support for Mediatek MT6589 boards
From: Maxime Ripard <hidden>
Date: 2014-05-11 12:35:10
Also in:
linux-devicetree, lkml
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@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
quoted hunk ↗ jump to hunk
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 Moxadiff --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) += nomadikdiff --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@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.
quoted hunk ↗ jump to hunk
+ }; +};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.odiff --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@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 -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 836 bytes Desc: Digital signature URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20140511/5b338ecd/attachment.sig>