TI DaVinci: DM646x: Initial Support for DM646x SOC

DM646x is an SOC from TI which has both an ARM and a DSP.
There are multiple variants of the SOC mainly dealing with different
core speeds.
This patch adds the initial framework for the DM646x SOC.

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

cpu/arm926ejs/davinci/Makefile

@@ -31,6 +31,7 @@ COBJS-y				+= cpu.o timer.o psc.o
 COBJS-$(CONFIG_SOC_DM355)	+= dm355.o
 COBJS-$(CONFIG_SOC_DM365)	+= dm365.o
 COBJS-$(CONFIG_SOC_DM644X)	+= dm644x.o
+COBJS-$(CONFIG_SOC_DM646X)	+= dm646x.o
 COBJS-$(CONFIG_DRIVER_TI_EMAC)	+= lxt972.o dp83848.o
 
 SOBJS	= reset.o

cpu/arm926ejs/davinci/dm646x.c

@@ -0,0 +1,41 @@
+/*
+ * SoC-specific code for TMS320DM646x chips
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <asm/arch/hardware.h>
+
+void davinci_enable_uart0(void)
+{
+	lpsc_on(DAVINCI_DM646X_LPSC_UART0);
+}
+
+#ifdef CONFIG_DRIVER_TI_EMAC
+void davinci_enable_emac(void)
+{
+	lpsc_on(DAVINCI_DM646X_LPSC_EMAC);
+}
+#endif
+
+#ifdef CONFIG_DRIVER_DAVINCI_I2C
+void davinci_enable_i2c(void)
+{
+	lpsc_on(DAVINCI_DM646X_LPSC_I2C);
+}
+#endif

include/asm-arm/arch-davinci/hardware.h

@@ -105,6 +105,13 @@ typedef volatile unsigned int *	dv_reg_p;
 #define DAVINCI_ASYNC_EMIF_CNTRL_BASE		0x01d10000
 #define DAVINCI_MMC_SD0_BASE			0x01d11000
 
+#elif defined(CONFIG_SOC_DM646X)
+#define DAVINCI_ASYNC_EMIF_CNTRL_BASE		0x20008000
+#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE	0x42000000
+#define DAVINCI_ASYNC_EMIF_DATA_CE1_BASE	0x44000000
+#define DAVINCI_ASYNC_EMIF_DATA_CE2_BASE	0x46000000
+#define DAVINCI_ASYNC_EMIF_DATA_CE3_BASE	0x48000000
+
 #endif
 
 /* Power and Sleep Controller (PSC) Domains */
@@ -153,6 +160,10 @@ typedef volatile unsigned int *	dv_reg_p;
 #define DAVINCI_LPSC_GEM		39
 #define DAVINCI_LPSC_IMCOP		40
 
+#define DAVINCI_DM646X_LPSC_EMAC	14
+#define DAVINCI_DM646X_LPSC_UART0	26
+#define DAVINCI_DM646X_LPSC_I2C		31
+
 void lpsc_on(unsigned int id);
 void dsp_on(void);