arm: add basic support for Mediatek MT6589 boards

This adds a generic devicetree board file and a dtsi for boards
based on 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>

6 files changed, 131 insertions, 0 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 87b63fde06d7..845c12de257b 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -978,6 +978,8 @@ 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 6721fab13734..1895de2ecc3c 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -172,6 +172,7 @@ 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 000000000000..d0297a051549
--- /dev/null
+++ b/arch/arm/boot/dts/mt6589.dtsi
@@ -0,0 +1,94 @@
+/*
+ * 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@0 {
+                        device_type = "cpu";
+                        compatible = "arm,cortex-a7";
+                        reg = <0x0>;
+                };
+                cpu@1 {
+                        device_type = "cpu";
+                        compatible = "arm,cortex-a7";
+                        reg = <0x1>;
+                };
+                cpu@2 {
+                        device_type = "cpu";
+                        compatible = "arm,cortex-a7";
+                        reg = <0x2>;
+                };
+                cpu@3 {
+                        device_type = "cpu";
+                        compatible = "arm,cortex-a7";
+                        reg = <0x3>;
+                };
+
+        };
+
+        clocks {
+                #address-cells = <1>;
+                #size-cells = <1>;
+                compatible = "simple-bus";
+                ranges;
+
+                system_clk: dummy13m {
+                        compatible = "fixed-clock";
+                        clock-frequency = <13000000>;
+                        #clock-cells = <0>;
+                };
+
+                rtc_clk: dummy32k {
+                        compatible = "fixed-clock";
+                        clock-frequency = <32000>;
+                        #clock-cells = <0>;
+                };
+        };
+
+        soc {
+                #address-cells = <1>;
+                #size-cells = <1>;
+                compatible = "simple-bus";
+                ranges;
+
+                timer: timer@10008000 {
+                        compatible = "mediatek,mt6577-timer";
+                        reg = <0x10008000 0x80>;
+                        interrupts = <GIC_SPI 113 IRQ_TYPE_EDGE_RISING>;
+                        clocks = <&system_clk>, <&rtc_clk>;
+                        clock-names = "system-clk", "rtc-clk";
+                };
+
+                gic: interrupt-controller@10212000 {
+                        compatible = "arm,cortex-a15-gic";
+                        interrupt-controller;
+                        #interrupt-cells = <3>;
+                        reg = <0x10211000 0x1000>,
+                              <0x10212000 0x1000>,
+                              <0x10214000 0x2000>,
+                              <0x10216000 0x2000>;
+                };
+        };
+};
diff --git a/arch/arm/mach-mediatek/Kconfig b/arch/arm/mach-mediatek/Kconfig
new file mode 100644
index 000000000000..2c043a210db0
--- /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 000000000000..43e619f56172
--- /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 000000000000..f2acf075350d
--- /dev/null
+++ b/arch/arm/mach-mediatek/mediatek.c
@@ -0,0 +1,27 @@
+/*
+ * 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/init.h>
+#include <asm/mach/arch.h>
+
+static const char * const mediatek_board_dt_compat[] = {
+        "mediatek,mt6589",
+        NULL,
+};
+
+DT_MACHINE_START(MEDIATEK_DT, "Mediatek Cortex-A7 (Device Tree)")
+        .dt_compat      = mediatek_board_dt_compat,
+MACHINE_END