ARM: hi3xxx: add board support with device tree

Add board support with device tree for Hisilicon Hi3620 SoC platform.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
[khilman: fix checkpatch errors]
[khilman: fold in patch which selects GPIO in Kconfig]
Signed-off-by: Kevin Hilman <khilman@linaro.org>

6 files changed, 87 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt
new file mode 100644
index 000000000000..21a73363e019
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt
@@ -0,0 +1,6 @@
+Hisilicon Platforms Device Tree Bindings
+----------------------------------------------------
+
+Hi4511 Board
+Required root node properties:
+        - compatible = "hisilicon,hi3620-hi4511";
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index c1f1a7eee953..75eb5323fedd 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -925,6 +925,8 @@ source "arch/arm/mach-footbridge/Kconfig"
 
 source "arch/arm/mach-gemini/Kconfig"
 
+source "arch/arm/mach-hi3xxx/Kconfig"
+
 source "arch/arm/mach-highbank/Kconfig"
 
 source "arch/arm/mach-integrator/Kconfig"
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index c99b1086d83d..dfbafa38b4cd 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -156,6 +156,7 @@ machine-$(CONFIG_ARCH_EBSA110)		+= ebsa110
 machine-$(CONFIG_ARCH_EP93XX)           += ep93xx
 machine-$(CONFIG_ARCH_EXYNOS)           += exynos
 machine-$(CONFIG_ARCH_GEMINI)           += gemini
+machine-$(CONFIG_ARCH_HI3xxx)           += hi3xxx
 machine-$(CONFIG_ARCH_HIGHBANK)         += highbank
 machine-$(CONFIG_ARCH_INTEGRATOR)       += integrator
 machine-$(CONFIG_ARCH_IOP13XX)          += iop13xx
diff --git a/arch/arm/mach-hi3xxx/Kconfig b/arch/arm/mach-hi3xxx/Kconfig
new file mode 100644
index 000000000000..8a502d1e9542
--- /dev/null
+++ b/arch/arm/mach-hi3xxx/Kconfig
@@ -0,0 +1,13 @@
+config ARCH_HI3xxx
+        bool "Hisilicon Hi36xx/Hi37xx family" if ARCH_MULTI_V7
+        select ARM_AMBA
+        select ARM_GIC
+        select ARM_TIMER_SP804
+        select ARCH_WANT_OPTIONAL_GPIOLIB
+        select CACHE_L2X0
+        select CLKSRC_OF
+        select GENERIC_CLOCKEVENTS
+        select PINCTRL
+        select PINCTRL_SINGLE
+        help
+          Support for Hisilicon Hi36xx/Hi37xx processor family
diff --git a/arch/arm/mach-hi3xxx/Makefile b/arch/arm/mach-hi3xxx/Makefile
new file mode 100644
index 000000000000..d68ebb3d10bb
--- /dev/null
+++ b/arch/arm/mach-hi3xxx/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for Hisilicon Hi36xx/Hi37xx processors line
+#
+
+obj-y   += hi3xxx.o
diff --git a/arch/arm/mach-hi3xxx/hi3xxx.c b/arch/arm/mach-hi3xxx/hi3xxx.c
new file mode 100644
index 000000000000..fe56daf84b1a
--- /dev/null
+++ b/arch/arm/mach-hi3xxx/hi3xxx.c
@@ -0,0 +1,60 @@
+5/*
+ * (Hisilicon's Hi36xx/Hi37xx SoC based) flattened device tree enabled machine
+ *
+ * Copyright (c) 2012-2013 Hisilicon Ltd.
+ * Copyright (c) 2012-2013 Linaro Ltd.
+ *
+ * Author: Haojian Zhuang <haojian.zhuang@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/clk-provider.h>
+#include <linux/clocksource.h>
+#include <linux/irqchip.h>
+#include <linux/of_platform.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+/*
+ * This table is only for optimization. Since ioremap() could always share
+ * the same mapping if it's defined as static IO mapping.
+ *
+ * Without this table, system could also work. The cost is some virtual address
+ * spaces wasted since ioremap() may be called multi times for the same
+ * IO space.
+ */
+static struct map_desc hi3620_io_desc[] __initdata = {
+        {
+                .pfn            = __phys_to_pfn(0xfc802000),
+                .virtual        = 0xfe802000,
+                .length         = 0x1000,
+                .type           = MT_DEVICE,
+        },
+};
+
+static void __init hi3620_map_io(void)
+{
+        debug_ll_io_init();
+        iotable_init(hi3620_io_desc, ARRAY_SIZE(hi3620_io_desc));
+}
+
+static void __init hi3xxx_timer_init(void)
+{
+        of_clk_init(NULL);
+        clocksource_of_init();
+}
+
+static const char *hi3xxx_compat[] __initconst = {
+        "hisilicon,hi3620-hi4511",
+        NULL,
+};
+
+DT_MACHINE_START(HI3620, "Hisilicon Hi3620 (Flattened Device Tree)")
+        .map_io         = hi3620_map_io,
+        .init_time      = hi3xxx_timer_init,
+        .dt_compat      = hi3xxx_compat,
+MACHINE_END