imx: imx7d: add imx-common cpu support for imx7d

Add imx-common cpu support for imx7d SoC
- Update reset_cause for imx7d
- Enable watchdog driver built for imx7d

Signed-off-by: Adrian Alonso <aalonso@freescale.com>
Signed-off-by: Peng Fan <Peng.Fan@freescale.com>

arch/arm/Makefile

@@ -79,11 +79,11 @@ libs-y += arch/arm/cpu/
 libs-y += arch/arm/lib/
 
 ifeq ($(CONFIG_SPL_BUILD),y)
-ifneq (,$(CONFIG_MX23)$(CONFIG_MX28)$(CONFIG_MX35)$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35))
+ifneq (,$(CONFIG_MX23)$(CONFIG_MX28)$(CONFIG_MX35)$(filter $(SOC), mx25 mx27 mx5 mx6 mx7 mx31 mx35))
 libs-y += arch/arm/imx-common/
 endif
 else
-ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35 mxs vf610))
+ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx7 mx31 mx35 mxs vf610))
 libs-y += arch/arm/imx-common/
 endif
 endif

arch/arm/cpu/armv7/Makefile

@@ -12,7 +12,7 @@ obj-y	+= cache_v7.o
 obj-y	+= cpu.o cp15.o
 obj-y	+= syslib.o
 
-ifneq ($(CONFIG_AM43XX)$(CONFIG_AM33XX)$(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX)$(CONFIG_TEGRA)$(CONFIG_MX6)$(CONFIG_TI81XX)$(CONFIG_AT91FAMILY)$(CONFIG_SUNXI)$(CONFIG_ARCH_SOCFPGA),)
+ifneq ($(CONFIG_AM43XX)$(CONFIG_AM33XX)$(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX)$(CONFIG_TEGRA)$(CONFIG_MX6)$(CONFIG_MX7)$(CONFIG_TI81XX)$(CONFIG_AT91FAMILY)$(CONFIG_SUNXI)$(CONFIG_ARCH_SOCFPGA),)
 ifneq ($(CONFIG_SKIP_LOWLEVEL_INIT),y)
 obj-y	+= lowlevel_init.o
 endif
@@ -44,6 +44,7 @@ obj-$(if $(filter bcmnsp,$(SOC)),y) += bcmnsp/
 obj-$(if $(filter ls102xa,$(SOC)),y) += ls102xa/
 obj-$(if $(filter mx5,$(SOC)),y) += mx5/
 obj-$(CONFIG_MX6) += mx6/
+obj-$(CONFIG_MX7) += mx7/
 obj-$(CONFIG_OMAP34XX) += omap3/
 obj-$(CONFIG_OMAP44XX) += omap4/
 obj-$(CONFIG_OMAP54XX) += omap5/

arch/arm/cpu/armv7/mx7/Makefile

@@ -0,0 +1,8 @@
+#
+# (C) Copyright 2015 Freescale Semiconductor, Inc.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+#
+
+obj-y	:= soc.o clock.o clock_slice.o

arch/arm/imx-common/Makefile

@@ -7,7 +7,7 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-ifeq ($(SOC),$(filter $(SOC),mx25 mx35 mx5 mx6 vf610))
+ifeq ($(SOC),$(filter $(SOC),mx25 mx35 mx5 mx6 mx7 vf610))
 obj-y	= iomux-v3.o
 endif
 ifeq ($(SOC),$(filter $(SOC),mx5 mx6))
@@ -18,7 +18,12 @@ ifeq ($(SOC),$(filter $(SOC),mx6 mxs))
 obj-y	+= misc.o
 obj-$(CONFIG_SPL_BUILD)	+= spl.o
 endif
-ifeq ($(SOC),$(filter $(SOC),mx6))
+ifeq ($(SOC),$(filter $(SOC),mx7))
+obj-y 	+= cpu.o
+obj-$(CONFIG_SYS_I2C_MXC) += i2c-mxv7.o
+obj-$(CONFIG_SYSCOUNTER_TIMER) += syscounter.o
+endif
+ifeq ($(SOC),$(filter $(SOC),mx6 mx7))
 obj-y 	+= cache.o init.o
 obj-$(CONFIG_CMD_SATA) += sata.o
 obj-$(CONFIG_IMX_VIDEO_SKIP) += video.o

arch/arm/imx-common/cpu.c

@@ -46,13 +46,28 @@ static char *get_reset_cause(void)
 	case 0x00008:
 		return "IPP USER";
 	case 0x00010:
+#ifdef	CONFIG_MX7
+		return "WDOG1";
+#else
 		return "WDOG";
+#endif
 	case 0x00020:
 		return "JTAG HIGH-Z";
 	case 0x00040:
 		return "JTAG SW";
+	case 0x00080:
+		return "WDOG3";
+#ifdef CONFIG_MX7
+	case 0x00100:
+		return "WDOG4";
+	case 0x00200:
+		return "TEMPSENSE";
+#else
+	case 0x00100:
+		return "TEMPSENSE";
 	case 0x10000:
 		return "WARM BOOT";
+#endif
 	default:
 		return "unknown reset";
 	}
@@ -122,6 +137,8 @@ unsigned imx_ddr_size(void)
 const char *get_imx_type(u32 imxtype)
 {
 	switch (imxtype) {
+	case MXC_CPU_MX7D:
+		return "7D";	/* Dual-core version of the mx7 */
 	case MXC_CPU_MX6QP:
 		return "6QP";	/* Quad-Plus version of the mx6 */
 	case MXC_CPU_MX6DP:
@@ -236,6 +253,7 @@ int cpu_mmc_init(bd_t *bis)
 }
 #endif
 
+#ifndef CONFIG_MX7
 u32 get_ahb_clk(void)
 {
 	struct mxc_ccm_reg *imx_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
@@ -247,6 +265,7 @@ u32 get_ahb_clk(void)
 
 	return get_periph_clk() / (ahb_podf + 1);
 }
+#endif
 
 void arch_preboot_os(void)
 {

drivers/watchdog/Makefile

@@ -7,7 +7,7 @@
 
 obj-$(CONFIG_AT91SAM9_WATCHDOG) += at91sam9_wdt.o
 obj-$(CONFIG_FTWDT010_WATCHDOG) += ftwdt010_wdt.o
-ifneq (,$(filter $(SOC), mx31 mx35 mx5 mx6 vf610 ls102xa))
+ifneq (,$(filter $(SOC), mx31 mx35 mx5 mx6 mx7 vf610 ls102xa))
 obj-y += imx_watchdog.o
 endif
 obj-$(CONFIG_S5P)               += s5p_wdt.o