[PATCH 3/3] Support for the at91sam9g20 : Atmel 400Mhz ARM 926ej-s SOC.

Jean-Christophe PLAGNIOL-VILLARD plagnioj at jcrosoft.com
Fri Sep 17 22:18:37 EDT 2010 

AT91sam9g20 is an evolution of the at91sam9260 with a faster clock
speed.
We created a new board for this device but based the chip support
directly on 9260 files with little updates.
Here is the chip page on Atmel wabsite:
http://atmel.com/dyn/products/product_card.asp?part_id=4337

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre at atmel.com>
Cc: Patrice Vilchez <patrice.vilchez at atmel.com>
---
 arch/arm/Makefile                        |    1 +
 arch/arm/boards/at91sam9260ek/init.c     |   21 +++++++++++++++-
 arch/arm/configs/at91sam9g20ek_defconfig |   39 ++++++++++++++++++++++++++++++
 arch/arm/mach-at91/Kconfig               |   33 +++++++++++++++++++++++++
 arch/arm/mach-at91/Makefile              |    1 +
 arch/arm/mach-at91/lowlevel_init.S       |    3 +-
 6 files changed, 96 insertions(+), 2 deletions(-)
 create mode 100644 arch/arm/configs/at91sam9g20ek_defconfig

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index e404ad0..77b6cf4 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -52,6 +52,7 @@ board-$(CONFIG_MACH_A9M2410)			:= a9m2410
 board-$(CONFIG_MACH_A9M2440)			:= a9m2440
 board-$(CONFIG_MACH_AT91SAM9260EK)		:= at91sam9260ek
 board-$(CONFIG_MACH_AT91SAM9263EK)		:= at91sam9263ek
+board-$(CONFIG_MACH_AT91SAM9G20EK)		:= at91sam9260ek
 board-$(CONFIG_MACH_EDB9301)			:= edb93xx
 board-$(CONFIG_MACH_EDB9302)			:= edb93xx
 board-$(CONFIG_MACH_EDB9302A)			:= edb93xx
diff --git a/arch/arm/boards/at91sam9260ek/init.c b/arch/arm/boards/at91sam9260ek/init.c
index 7bb3c45..966dd2f 100644
--- a/arch/arm/boards/at91sam9260ek/init.c
+++ b/arch/arm/boards/at91sam9260ek/init.c
@@ -40,6 +40,25 @@
 #include <mach/at91_pmc.h>
 #include <mach/at91_rstc.h>
 
+/*
+ * board revision encoding
+ * bit 0:
+ *	0 => 1 mmc
+ *	1 => 2 mmcs (board from revision C)
+ */
+#define HAVE_2MMC	(1 << 0)
+static void ek_set_board_type(void)
+{
+	if (machine_is_at91sam9g20ek()) {
+		armlinux_set_architecture(MACH_TYPE_AT91SAM9G20EK);
+#ifdef CONFIG_AT91_HAVE_2MMC
+		armlinux_set_revision(HAVE_2MMC);
+#endif
+	} else {
+		armlinux_set_architecture(MACH_TYPE_AT91SAM9260EK);
+	}
+}
+
 static struct atmel_nand_data nand_pdata = {
 	.ale		= 21,
 	.cle		= 22,
@@ -130,7 +149,7 @@ static int at91sam9260ek_devices_init(void)
 
 	at91_add_device_sdram(64 * 1024 * 1024);
 	armlinux_set_bootparams((void *)(AT91_CHIPSELECT_1 + 0x100));
-	armlinux_set_architecture(MACH_TYPE_AT91SAM9260EK);
+	ek_set_board_type();
 
 	devfs_add_partition("nand0", 0x00000, 0x80000, PARTITION_FIXED, "self_raw");
 	dev_add_bb_dev("self_raw", "self0");
diff --git a/arch/arm/configs/at91sam9g20ek_defconfig b/arch/arm/configs/at91sam9g20ek_defconfig
new file mode 100644
index 0000000..bc7c242
--- /dev/null
+++ b/arch/arm/configs/at91sam9g20ek_defconfig
@@ -0,0 +1,39 @@
+CONFIG_ARCH_AT91SAM9G20=y
+CONFIG_MACH_AT91SAM9G20EK=y
+CONFIG_AT91_HAVE_2MMC=y
+CONFIG_ARM_OPTIMZED_STRING_FUNCTIONS=y
+CONFIG_PROMPT="9G20-EK:"
+CONFIG_LONGHELP=y
+CONFIG_GLOB=y
+CONFIG_PROMPT_HUSH_PS2="y"
+CONFIG_CMDLINE_EDITING=y
+CONFIG_AUTO_COMPLETE=y
+CONFIG_PARTITION=y
+CONFIG_DEFAULT_ENVIRONMENT_PATH="arch/arm/boards/at91sam9260ek/env"
+CONFIG_CMD_EDIT=y
+CONFIG_CMD_SLEEP=y
+CONFIG_CMD_SAVEENV=y
+CONFIG_CMD_LOADENV=y
+CONFIG_CMD_EXPORT=y
+CONFIG_CMD_PRINTENV=y
+CONFIG_CMD_READLINE=y
+CONFIG_CMD_MEMINFO=y
+CONFIG_CMD_CRC=y
+CONFIG_CMD_MTEST=y
+CONFIG_CMD_MTEST_ALTERNATIVE=y
+CONFIG_CMD_FLASH=y
+CONFIG_CMD_BOOTM_SHOW_TYPE=y
+CONFIG_CMD_RESET=y
+CONFIG_CMD_GO=y
+CONFIG_CMD_TIMEOUT=y
+CONFIG_CMD_PARTITION=y
+CONFIG_CMD_GPIO=y
+CONFIG_NET=y
+CONFIG_NET_DHCP=y
+CONFIG_NET_PING=y
+CONFIG_NET_TFTP=y
+CONFIG_DRIVER_NET_MACB=y
+# CONFIG_SPI is not set
+CONFIG_I2C=y
+CONFIG_DRIVER_CFI=y
+CONFIG_CFI_BUFFER_WRITE=y
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index 288ee6f..1491161 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -7,6 +7,7 @@ config ARCH_TEXT_BASE
 config BOARDINFO
 	default "Atmel 91SAM9260-EK" if MACH_AT91SAM9260EK
 	default "Atmel at91sam9263-ek" if MACH_AT91SAM9263EK
+	default "Atmel at91sam9g20-ek" if MACH_AT91SAM9G20EK
 	default "Bucyrus MMC-CPU" if MACH_MMCCPU
 	default "Ronetix PM9263" if MACH_PM9263
 
@@ -28,6 +29,11 @@ config ARCH_AT91SAM9263
 	select CPU_ARM926T
 	select HAS_MACB
 
+config ARCH_AT91SAM9G20
+	bool "AT91SAM9G20"
+	select CPU_ARM926T
+	select HAS_MACB
+
 endchoice
 
 # ----------------------------------------------------------
@@ -50,6 +56,25 @@ endif
 
 # ----------------------------------------------------------
 
+if ARCH_AT91SAM9G20
+
+choice
+
+	prompt "AT91SAM9G20 Board Type"
+
+config MACH_AT91SAM9G20EK
+	bool "Atmel AT91SAM9G20-EK Evaluation Kit"
+	select HAVE_NAND_ATMEL_BUSWIDTH_16
+	help
+	  Select this if you are using Atmel's AT91SAM9G20-EK Evaluation Kit
+	  that embeds only one SD/MMC slot.
+
+endchoice
+
+endif
+
+# ----------------------------------------------------------
+
 if ARCH_AT91SAM9263
 
 choice
@@ -88,4 +113,12 @@ config MTD_NAND_ATMEL_BUSWIDTH_16
 	  On AT91SAM926x boards both types of NAND flash can be present
 	  (8 and 16 bit data bus width).
 
+config AT91_HAVE_2MMC
+	bool "Have 2 MMC"
+	depends on MACH_AT91SAM9G20EK
+	help
+	  Select this if you are using an Atmel AT91SAM9G20-EK Evaluation Kit
+	  with 2 SD/MMC Slots. This is the case for AT91SAM9G20-EK rev. C and
+	  onwards.
+
 endif
diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index 2878b04..1bedadb 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -5,3 +5,4 @@ obj-$(CONFIG_MACH_DO_LOWLEVEL_INIT) += lowlevel_init.o
 # CPU-specific support
 obj-$(CONFIG_ARCH_AT91SAM9260) += at91sam9260.o at91sam926x_time.o at91sam9260_devices.o sam9_smc.o
 obj-$(CONFIG_ARCH_AT91SAM9263) += at91sam9263.o at91sam926x_time.o at91sam9263_devices.o sam9_smc.o
+obj-$(CONFIG_ARCH_AT91SAM9G20) += at91sam9260.o at91sam926x_time.o at91sam9260_devices.o sam9_smc.o
diff --git a/arch/arm/mach-at91/lowlevel_init.S b/arch/arm/mach-at91/lowlevel_init.S
index 497cc0d..0b29866 100644
--- a/arch/arm/mach-at91/lowlevel_init.S
+++ b/arch/arm/mach-at91/lowlevel_init.S
@@ -193,7 +193,8 @@ SMRDATA:
 	.word CONFIG_SYS_PIOD_PPUDR_VAL
 	.word (AT91_BASE_SYS + AT91_PIOD + PIO_ASR)
 	.word CONFIG_SYS_PIOD_PPUDR_VAL
-#elif defined(CONFIG_ARCH_AT91SAM9260) || defined(CONFIG_ARCH_AT91SAM9261)
+#elif defined(CONFIG_AT91SAM9260) || defined(CONFIG_AT91SAM9261) \
+	|| defined(CONFIG_AT91SAM9G20)
 	.word (AT91_BASE_SYS + AT91_PIOC + PIO_PDR)
 	.word CONFIG_SYS_PIOC_PDR_VAL1
 	.word (AT91_BASE_SYS + AT91_PIOC + PIO_PUDR)
-- 
1.7.1

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