arm: add basic support for Rockchip RK3066a boards

This adds a generic devicetree board file and a dtsi for boards
based on the RK3066a SoCs from Rockchip.

Apart from the generic parts (gic, clocks, pinctrl) the only components
currently supported are the timers, uarts and mmc ports (all DesignWare-
based).
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Olof Johansson <olof@lixom.net>

arch/arm/Kconfig

@@ -981,6 +981,8 @@ source "arch/arm/mach-mmp/Kconfig"
 
 source "arch/arm/mach-realview/Kconfig"
 
+source "arch/arm/mach-rockchip/Kconfig"
+
 source "arch/arm/mach-sa1100/Kconfig"
 
 source "arch/arm/plat-samsung/Kconfig"

arch/arm/Makefile

@@ -171,6 +171,7 @@ machine-$(CONFIG_ARCH_PICOXCELL)	+= picoxcell
 machine-$(CONFIG_ARCH_PRIMA2)		+= prima2
 machine-$(CONFIG_ARCH_PXA)		+= pxa
 machine-$(CONFIG_ARCH_REALVIEW)		+= realview
+machine-$(CONFIG_ARCH_ROCKCHIP)		+= rockchip
 machine-$(CONFIG_ARCH_RPC)		+= rpc
 machine-$(CONFIG_ARCH_S3C24XX)		+= s3c24xx
 machine-$(CONFIG_ARCH_S3C64XX)		+= s3c64xx

arch/arm/mach-rockchip/Kconfig

+config ARCH_ROCKCHIP
+	bool "Rockchip RK2928 and RK3xxx SOCs" if ARCH_MULTI_V7
+	select PINCTRL
+	select PINCTRL_ROCKCHIP
+	select ARCH_REQUIRE_GPIOLIB
+	select ARM_GIC
+	select CACHE_L2X0
+	select HAVE_ARM_TWD if LOCAL_TIMERS
+	select HAVE_SMP
+	select LOCAL_TIMERS if SMP
+	select COMMON_CLK
+	select GENERIC_CLOCKEVENTS
+	select DW_APB_TIMER_OF
+	help
+	  Support for Rockchip's Cortex-A9 Single-to-Quad-Core-SoCs
+	  containing the RK2928, RK30xx and RK31xx series.

arch/arm/mach-rockchip/Makefile

+obj-$(CONFIG_ARCH_ROCKCHIP) += rockchip.o

arch/arm/mach-rockchip/rockchip.c

+/*
+ * Device Tree support for Rockchip SoCs
+ *
+ * Copyright (c) 2013 MundoReader S.L.
+ * Author: Heiko Stuebner <heiko@sntech.de>
+ *
+ * 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 <linux/dw_apb_timer.h>
+#include <linux/clk-provider.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/hardware/cache-l2x0.h>
+
+static void __init rockchip_timer_init(void)
+{
+	of_clk_init(NULL);
+	clocksource_of_init();
+}
+
+static void __init rockchip_dt_init(void)
+{
+	l2x0_of_init(0, ~0UL);
+	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+}
+
+static const char * const rockchip_board_dt_compat[] = {
+	"rockchip,rk2928",
+	"rockchip,rk3066a",
+	"rockchip,rk3066b",
+	"rockchip,rk3188",
+	NULL,
+};
+
+DT_MACHINE_START(ROCKCHIP_DT, "Rockchip Cortex-A9 (Device Tree)")
+	.init_machine	= rockchip_dt_init,
+	.init_time	= rockchip_timer_init,
+	.dt_compat	= rockchip_board_dt_compat,
+MACHINE_END