at91: Support for the at91sam9g20 : Atmel 400Mhz ARM 926ej-s SOC.

AT91sam9g20 is an evolution of the at91sam9260 with a faster clock speed.

The AT91SAM9G20-EK board is an updated revision of the AT91SAM9260-EK board.
It is essentially the same, with a few minor differences.

Here is the chip page on Atmel website:
http://www.atmel.com/dyn/products/product_card.asp?part_id=4337

Signed-off-by: Justin Waters <justin.waters@timesys.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

MAKEALL

@@ -572,6 +572,7 @@ LIST_at91="		\
 	at91sam9260ek	\
 	at91sam9261ek	\
 	at91sam9263ek	\
+	at91sam9g20ek	\
 	at91sam9rlek	\
 	cmc_pu2		\
 	csb637		\

Makefile

@@ -2653,8 +2653,18 @@ at91cap9adk_config	:	unconfig
 at91sam9260ek_nandflash_config \
 at91sam9260ek_dataflash_cs0_config \
 at91sam9260ek_dataflash_cs1_config \
-at91sam9260ek_config	:	unconfig
-	@mkdir -p $(obj)include
+at91sam9260ek_config \
+at91sam9g20ek_nandflash_config \
+at91sam9g20ek_dataflash_cs0_config \
+at91sam9g20ek_dataflash_cs1_config \
+at91sam9g20ek_config	:	unconfig
+	@mkdir -p $(obj)include
+	@if [ "$(findstring 9g20,$@)" ] ; then \
+		echo "#define CONFIG_AT91SAM9G20EK 1"	>>$(obj)include/config.h ; \
+		$(XECHO) "... 9G20 Variant" ; \
+	else \
+		echo "#define CONFIG_AT91SAM9260EK 1"	>>$(obj)include/config.h ; \
+	fi;
 	@if [ "$(findstring _nandflash,$@)" ] ; then \
 		echo "#define CONFIG_SYS_USE_NANDFLASH 1"	>>$(obj)include/config.h ; \
 		$(XECHO) "... with environment variable in NAND FLASH" ; \

board/atmel/at91sam9260ek/at91sam9260ek.c

@@ -141,8 +141,13 @@ int board_init(void)
 	/* Enable Ctrlc */
 	console_init_f();
 
+#ifdef CONFIG_AT91SAM9G20EK
+	/* arch number of AT91SAM9260EK-Board */
+	gd->bd->bi_arch_number = MACH_TYPE_AT91SAM9G20EK;
+#else
 	/* arch number of AT91SAM9260EK-Board */
 	gd->bd->bi_arch_number = MACH_TYPE_AT91SAM9260EK;
+#endif
 	/* adress of boot parameters */
 	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 

cpu/arm926ejs/at91/Makefile

@@ -35,6 +35,11 @@ COBJS-$(CONFIG_MACB)		+= at91sam9260_macb.o
 COBJS-y				+= at91sam9260_serial.o
 COBJS-$(CONFIG_HAS_DATAFLASH)	+= at91sam9260_spi.o
 endif
+ifdef CONFIG_AT91SAM9G20
+COBJS-$(CONFIG_MACB)		+= at91sam9260_macb.o
+COBJS-y				+= at91sam9260_serial.o
+COBJS-$(CONFIG_HAS_DATAFLASH)	+= at91sam9260_spi.o
+endif
 ifdef CONFIG_AT91SAM9261
 COBJS-y				+= at91sam9261_serial.o
 COBJS-$(CONFIG_HAS_DATAFLASH)	+= at91sam9261_spi.o

cpu/arm926ejs/at91/usb.c

@@ -33,7 +33,7 @@ int usb_cpu_init(void)
 {
 
 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
-    defined(CONFIG_AT91SAM9263)
+    defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20)
 	/* Enable PLLB */
 	at91_sys_write(AT91_CKGR_PLLBR, CONFIG_SYS_AT91_PLLB);
 	while ((at91_sys_read(AT91_PMC_SR) & AT91_PMC_LOCKB) != AT91_PMC_LOCKB)
@@ -62,7 +62,7 @@ int usb_cpu_stop(void)
 #endif
 
 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
-    defined(CONFIG_AT91SAM9263)
+    defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20)
 	/* Disable PLLB */
 	at91_sys_write(AT91_CKGR_PLLBR, 0);
 	while ((at91_sys_read(AT91_PMC_SR) & AT91_PMC_LOCKB) != 0)

doc/README.at91

@@ -3,7 +3,7 @@ Atmel AT91 Evaluation kits
 http://atmel.com/dyn/products/tools.asp?family_id=605#1443
 
 ------------------------------------------------------------------------------
-AT91SAM9260EK & AT91SAM9XEEK
+AT91SAM9260EK, AT91SAM9G20EK & AT91SAM9XEEK
 ------------------------------------------------------------------------------
 
 Memory map

drivers/net/macb.c

@@ -447,14 +447,14 @@ static int macb_init(struct eth_device *netdev, bd_t *bd)
 	/* choose RMII or MII mode. This depends on the board */
 #ifdef CONFIG_RMII
 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
-    defined(CONFIG_AT91SAM9263)
+    defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20)
 	macb_writel(macb, USRIO, MACB_BIT(RMII) | MACB_BIT(CLKEN));
 #else
 	macb_writel(macb, USRIO, 0);
 #endif
 #else
 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
-    defined(CONFIG_AT91SAM9263)
+    defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20)
 	macb_writel(macb, USRIO, MACB_BIT(CLKEN));
 #else
 	macb_writel(macb, USRIO, MACB_BIT(MII));

include/asm-arm/arch-at91/hardware.h

@@ -18,7 +18,7 @@
 
 #if defined(CONFIG_AT91RM9200)
 #include <asm/arch/at91rm9200.h>
-#elif defined(CONFIG_AT91SAM9260)
+#elif defined(CONFIG_AT91SAM9260) || defined(CONFIG_AT91SAM9G20)
 #include <asm/arch/at91sam9260.h>
 #define AT91_BASE_SPI	AT91SAM9260_BASE_SPI0
 #define AT91_ID_UHP	AT91SAM9260_ID_UHP

include/configs/at91sam9260ek.h

@@ -3,7 +3,7 @@
  * Stelian Pop <stelian.pop@leadtechdesign.com>
  * Lead Tech Design <www.leadtechdesign.com>
  *
- * Configuation settings for the AT91SAM9260EK board.
+ * Configuation settings for the AT91SAM9260EK & AT91SAM9G20EK boards.
  *
  * See file CREDITS for list of people who contributed to this
  * project.
@@ -28,18 +28,26 @@
 #define __CONFIG_H
 
 /* ARM asynchronous clock */
-#define AT91_CPU_NAME		"AT91SAM9260"
 #define AT91_MAIN_CLOCK		18432000	/* 18.432 MHz crystal */
-#define AT91_MASTER_CLOCK	100000000	/* peripheral */
-#define AT91_CPU_CLOCK		200000000	/* cpu */
 #define CONFIG_SYS_AT91_PLLB	0x107c3e18	/* PLLB settings for USB */
 #define CONFIG_SYS_HZ		1000000		/* 1us resolution */
 
 #define AT91_SLOW_CLOCK		32768	/* slow clock */
 
 #define CONFIG_ARM926EJS	1	/* This is an ARM926EJS Core	*/
+
+#ifdef CONFIG_AT91SAM9G20EK
+#define AT91_CPU_NAME		"AT91SAM9G20"
+#define AT91_MASTER_CLOCK	132000000	/* peripheral */
+#define AT91_CPU_CLOCK		396000000	/* cpu */
+#define CONFIG_AT91SAM9G20	1	/* It's an Atmel AT91SAM9G20 SoC*/
+#else
+#define AT91_CPU_NAME		"AT91SAM9260"
+#define AT91_MASTER_CLOCK	100000000	/* peripheral */
+#define AT91_CPU_CLOCK		200000000	/* cpu */
 #define CONFIG_AT91SAM9260	1	/* It's an Atmel AT91SAM9260 SoC*/
-#define CONFIG_AT91SAM9260EK	1	/* on an AT91SAM9260EK Board	*/
+#endif
+
 #undef CONFIG_USE_IRQ			/* we don't need IRQ/FIQ stuff	*/
 
 #define CONFIG_CMDLINE_TAG	1	/* enable passing of ATAGs	*/
@@ -101,7 +109,12 @@
 #define CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS0	0xC0000000	/* CS0 */
 #define CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS1	0xD0000000	/* CS1 */
 #define AT91_SPI_CLK			15000000
+
+#ifdef CONFIG_AT91SAM9G20EK
+#define DATAFLASH_TCSS			(0x22 << 16)
+#else
 #define DATAFLASH_TCSS			(0x1a << 16)
+#endif
 #define DATAFLASH_TCHS			(0x1 << 24)
 
 /* NAND flash */