From d9654dceb315ccdabf4a5494109a4cc0fb2408a4 Mon Sep 17 00:00:00 2001
From: Shawn Guo <shawn.guo@freescale.com>
Date: Tue, 13 May 2014 21:46:16 +0800
Subject: [PATCH] ARM: imx: add basic imx6sx SoC support

Add basic suppport for i.MX6 SoloX SoC.

Signed-off-by: Anson Huang <b20788@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
---
 arch/arm/mach-imx/Kconfig       |  8 ++++++
 arch/arm/mach-imx/Makefile      |  1 +
 arch/arm/mach-imx/cpu.c         |  3 ++
 arch/arm/mach-imx/mach-imx6sx.c | 51 +++++++++++++++++++++++++++++++++
 arch/arm/mach-imx/mxc.h         |  6 ++++
 5 files changed, 69 insertions(+)
 create mode 100644 arch/arm/mach-imx/mach-imx6sx.c

diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index 839ef51fd390..4776e1ffacd5 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -763,6 +763,14 @@ config SOC_IMX6SL
 	help
 	  This enables support for Freescale i.MX6 SoloLite processor.
 
+config SOC_IMX6SX
+	bool "i.MX6 SoloX support"
+	select PINCTRL_IMX6SX
+	select SOC_IMX6
+
+	help
+	  This enables support for Freescale i.MX6 SoloX processor.
+
 config SOC_VF610
 	bool "Vybrid Family VF610 support"
 	select ARM_GIC
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index 572e1ab02c14..bbe93bbfd003 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -101,6 +101,7 @@ obj-$(CONFIG_SMP) += headsmp.o platsmp.o
 obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
 obj-$(CONFIG_SOC_IMX6Q) += clk-imx6q.o mach-imx6q.o
 obj-$(CONFIG_SOC_IMX6SL) += clk-imx6sl.o mach-imx6sl.o
+obj-$(CONFIG_SOC_IMX6SX) += clk-imx6sx.o mach-imx6sx.o
 
 ifeq ($(CONFIG_SUSPEND),y)
 AFLAGS_suspend-imx6.o :=-Wa,-march=armv7-a
diff --git a/arch/arm/mach-imx/cpu.c b/arch/arm/mach-imx/cpu.c
index ba3b498a67ec..bbe8ff1f0412 100644
--- a/arch/arm/mach-imx/cpu.c
+++ b/arch/arm/mach-imx/cpu.c
@@ -111,6 +111,9 @@ struct device * __init imx_soc_device_init(void)
 	case MXC_CPU_IMX6DL:
 		soc_id = "i.MX6DL";
 		break;
+	case MXC_CPU_IMX6SX:
+		soc_id = "i.MX6SX";
+		break;
 	case MXC_CPU_IMX6Q:
 		soc_id = "i.MX6Q";
 		break;
diff --git a/arch/arm/mach-imx/mach-imx6sx.c b/arch/arm/mach-imx/mach-imx6sx.c
new file mode 100644
index 000000000000..02fccf6033ac
--- /dev/null
+++ b/arch/arm/mach-imx/mach-imx6sx.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * 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/irqchip.h>
+#include <linux/of_platform.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include "common.h"
+
+static void __init imx6sx_init_machine(void)
+{
+	struct device *parent;
+
+	mxc_arch_reset_init_dt();
+
+	parent = imx_soc_device_init();
+	if (parent == NULL)
+		pr_warn("failed to initialize soc device\n");
+
+	of_platform_populate(NULL, of_default_bus_match_table, NULL, parent);
+
+	imx_anatop_init();
+}
+
+static void __init imx6sx_init_irq(void)
+{
+	imx_init_revision_from_anatop();
+	imx_init_l2cache();
+	imx_src_init();
+	imx_gpc_init();
+	irqchip_init();
+}
+
+static const char *imx6sx_dt_compat[] __initconst = {
+	"fsl,imx6sx",
+	NULL,
+};
+
+DT_MACHINE_START(IMX6SX, "Freescale i.MX6 SoloX (Device Tree)")
+	.map_io		= debug_ll_io_init,
+	.init_irq	= imx6sx_init_irq,
+	.init_machine	= imx6sx_init_machine,
+	.dt_compat	= imx6sx_dt_compat,
+	.restart	= mxc_restart,
+MACHINE_END
diff --git a/arch/arm/mach-imx/mxc.h b/arch/arm/mach-imx/mxc.h
index b08ab3ad4a6d..75d6a37e1ae4 100644
--- a/arch/arm/mach-imx/mxc.h
+++ b/arch/arm/mach-imx/mxc.h
@@ -36,6 +36,7 @@
 #define MXC_CPU_MX53		53
 #define MXC_CPU_IMX6SL		0x60
 #define MXC_CPU_IMX6DL		0x61
+#define MXC_CPU_IMX6SX		0x62
 #define MXC_CPU_IMX6Q		0x63
 
 #define IMX_CHIP_REVISION_1_0		0x10
@@ -163,6 +164,11 @@ static inline bool cpu_is_imx6dl(void)
 	return __mxc_cpu_type == MXC_CPU_IMX6DL;
 }
 
+static inline bool cpu_is_imx6sx(void)
+{
+	return __mxc_cpu_type == MXC_CPU_IMX6SX;
+}
+
 static inline bool cpu_is_imx6q(void)
 {
 	return __mxc_cpu_type == MXC_CPU_IMX6Q;