Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 141 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-omap2/board-rx51.c b/kernel/arch/arm/mach-omap2/board-rx51.c
new file mode 100644
index 000000000..2d1e5a6be
--- /dev/null
+++ b/kernel/arch/arm/mach-omap2/board-rx51.c
@@ -0,0 +1,141 @@
+/*
+ * Board support file for Nokia N900 (aka RX-51).
+ *
+ * Copyright (C) 2007, 2008 Nokia
+ * Copyright (C) 2012 Ivaylo Dimitrov <freemangordon@abv.bg>
+ * Copyright (C) 2013 Pali Rohár <pali.rohar@gmail.com>
+ *
+ * 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/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+#include <linux/leds.h>
+#include <linux/usb/phy.h>
+#include <linux/usb/musb.h>
+#include <linux/platform_data/spi-omap2-mcspi.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <linux/omap-dma.h>
+
+#include "common.h"
+#include "mux.h"
+#include "gpmc.h"
+#include "pm.h"
+#include "soc.h"
+#include "sdram-nokia.h"
+#include "omap-secure.h"
+
+#define RX51_GPIO_SLEEP_IND 162
+
+static struct gpio_led gpio_leds[] = {
+	{
+		.name	= "sleep_ind",
+		.gpio	= RX51_GPIO_SLEEP_IND,
+	},
+};
+
+static struct gpio_led_platform_data gpio_led_info = {
+	.leds		= gpio_leds,
+	.num_leds	= ARRAY_SIZE(gpio_leds),
+};
+
+static struct platform_device leds_gpio = {
+	.name	= "leds-gpio",
+	.id	= -1,
+	.dev	= {
+		.platform_data	= &gpio_led_info,
+	},
+};
+
+/*
+ * cpuidle C-states definition for rx51.
+ *
+ * The 'exit_latency' field is the sum of sleep
+ * and wake-up latencies.
+
+    ---------------------------------------------
+   | state |  exit_latency  |  target_residency  |
+    ---------------------------------------------
+   |  C1   |    110 + 162   |            5       |
+   |  C2   |    106 + 180   |          309       |
+   |  C3   |    107 + 410   |        46057       |
+   |  C4   |    121 + 3374  |        46057       |
+   |  C5   |    855 + 1146  |        46057       |
+   |  C6   |   7580 + 4134  |       484329       |
+   |  C7   |   7505 + 15274 |       484329       |
+    ---------------------------------------------
+
+*/
+
+extern void __init rx51_peripherals_init(void);
+
+#ifdef CONFIG_OMAP_MUX
+static struct omap_board_mux board_mux[] __initdata = {
+	{ .reg_offset = OMAP_MUX_TERMINATOR },
+};
+#endif
+
+static struct omap_musb_board_data musb_board_data = {
+	.interface_type		= MUSB_INTERFACE_ULPI,
+	.mode			= MUSB_OTG,
+	.power			= 0,
+};
+
+static void __init rx51_init(void)
+{
+	struct omap_sdrc_params *sdrc_params;
+
+	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
+	omap_serial_init();
+
+	sdrc_params = nokia_get_sdram_timings();
+	omap_sdrc_init(sdrc_params, sdrc_params);
+
+	usb_bind_phy("musb-hdrc.0.auto", 0, "twl4030_usb");
+	usb_musb_init(&musb_board_data);
+	rx51_peripherals_init();
+
+	if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
+#ifdef CONFIG_ARM_ERRATA_430973
+		pr_info("RX-51: Enabling ARM errata 430973 workaround\n");
+		/* set IBE to 1 */
+		rx51_secure_update_aux_cr(BIT(6), 0);
+#endif
+	}
+
+	/* Ensure SDRC pins are mux'd for self-refresh */
+	omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
+	omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
+
+	platform_device_register(&leds_gpio);
+}
+
+static void __init rx51_reserve(void)
+{
+	omap_reserve();
+}
+
+MACHINE_START(NOKIA_RX51, "Nokia RX-51 board")
+	/* Maintainer: Lauri Leukkunen <lauri.leukkunen@nokia.com> */
+	.atag_offset	= 0x100,
+	.reserve	= rx51_reserve,
+	.map_io		= omap3_map_io,
+	.init_early	= omap3430_init_early,
+	.init_irq	= omap3_init_irq,
+	.init_machine	= rx51_init,
+	.init_late	= omap3430_init_late,
+	.init_time	= omap3_sync32k_timer_init,
+	.restart	= omap3xxx_restart,
+MACHINE_END