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authorNicolas Ferre <nicolas.ferre@atmel.com>2011-10-10 16:29:24 (GMT)
committerNicolas Ferre <nicolas.ferre@atmel.com>2011-10-25 11:08:21 (GMT)
commit49fe2ba3138ca60422fd90ed76c1918be1c30fc0 (patch)
tree706cfe55a2e796ec304cd7ff4c9670e95f2b9402
parentc3b92c8787367a8bb53d57d9789b558f1295cc96 (diff)
downloadlinux-49fe2ba3138ca60422fd90ed76c1918be1c30fc0.tar.xz
ARM: at91: dt: at91sam9g45 family and board device tree files
Create a new device tree source file for Atmel at91sam9g45 SoC family. The Evaluation Kit at91sam9m10g45ek includes it. This first basic support will be populated as drivers and boards will be converted to device tree. Contains serial, dma and interrupt controllers. The generic board file still takes advantage of platform data for early serial init. As we need a storage media and the NAND flash driver is not converted to DT yet, we keep old initialization for it. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Reviewed-by: Rob Herring <rob.herring@calxeda.com>
-rw-r--r--arch/arm/boot/dts/at91sam9g45.dtsi106
-rw-r--r--arch/arm/boot/dts/at91sam9m10g45ek.dts35
-rw-r--r--arch/arm/mach-at91/Kconfig11
-rw-r--r--arch/arm/mach-at91/Makefile3
-rw-r--r--arch/arm/mach-at91/Makefile.boot2
-rw-r--r--arch/arm/mach-at91/at91sam9g45.c6
-rw-r--r--arch/arm/mach-at91/board-dt.c122
7 files changed, 285 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/at91sam9g45.dtsi b/arch/arm/boot/dts/at91sam9g45.dtsi
new file mode 100644
index 0000000..db6a452
--- /dev/null
+++ b/arch/arm/boot/dts/at91sam9g45.dtsi
@@ -0,0 +1,106 @@
+/*
+ * at91sam9g45.dtsi - Device Tree Include file for AT91SAM9G45 family SoC
+ * applies to AT91SAM9G45, AT91SAM9M10,
+ * AT91SAM9G46, AT91SAM9M11 SoC
+ *
+ * Copyright (C) 2011 Atmel,
+ * 2011 Nicolas Ferre <nicolas.ferre@atmel.com>
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+/include/ "skeleton.dtsi"
+
+/ {
+ model = "Atmel AT91SAM9G45 family SoC";
+ compatible = "atmel,at91sam9g45";
+ interrupt-parent = <&aic>;
+
+ aliases {
+ serial0 = &dbgu;
+ serial1 = &usart0;
+ serial2 = &usart1;
+ serial3 = &usart2;
+ serial4 = &usart3;
+ };
+ cpus {
+ cpu@0 {
+ compatible = "arm,arm926ejs";
+ };
+ };
+
+ memory@70000000 {
+ reg = <0x70000000 0x10000000>;
+ };
+
+ ahb {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ apb {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ aic: interrupt-controller@fffff000 {
+ #interrupt-cells = <1>;
+ compatible = "atmel,at91rm9200-aic";
+ interrupt-controller;
+ interrupt-parent;
+ reg = <0xfffff000 0x200>;
+ };
+
+ dma: dma-controller@ffffec00 {
+ compatible = "atmel,at91sam9g45-dma";
+ reg = <0xffffec00 0x200>;
+ interrupts = <21>;
+ };
+
+ dbgu: serial@ffffee00 {
+ compatible = "atmel,at91sam9260-usart";
+ reg = <0xffffee00 0x200>;
+ interrupts = <1>;
+ status = "disabled";
+ };
+
+ usart0: serial@fff8c000 {
+ compatible = "atmel,at91sam9260-usart";
+ reg = <0xfff8c000 0x200>;
+ interrupts = <7>;
+ atmel,use-dma-rx;
+ atmel,use-dma-tx;
+ status = "disabled";
+ };
+
+ usart1: serial@fff90000 {
+ compatible = "atmel,at91sam9260-usart";
+ reg = <0xfff90000 0x200>;
+ interrupts = <8>;
+ atmel,use-dma-rx;
+ atmel,use-dma-tx;
+ status = "disabled";
+ };
+
+ usart2: serial@fff94000 {
+ compatible = "atmel,at91sam9260-usart";
+ reg = <0xfff94000 0x200>;
+ interrupts = <9>;
+ atmel,use-dma-rx;
+ atmel,use-dma-tx;
+ status = "disabled";
+ };
+
+ usart3: serial@fff98000 {
+ compatible = "atmel,at91sam9260-usart";
+ reg = <0xfff98000 0x200>;
+ interrupts = <10>;
+ atmel,use-dma-rx;
+ atmel,use-dma-tx;
+ status = "disabled";
+ };
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/at91sam9m10g45ek.dts b/arch/arm/boot/dts/at91sam9m10g45ek.dts
new file mode 100644
index 0000000..85b34f5
--- /dev/null
+++ b/arch/arm/boot/dts/at91sam9m10g45ek.dts
@@ -0,0 +1,35 @@
+/*
+ * at91sam9m10g45ek.dts - Device Tree file for AT91SAM9M10G45-EK board
+ *
+ * Copyright (C) 2011 Atmel,
+ * 2011 Nicolas Ferre <nicolas.ferre@atmel.com>
+ *
+ * Licensed under GPLv2 or later.
+ */
+/dts-v1/;
+/include/ "at91sam9g45.dtsi"
+
+/ {
+ model = "Atmel AT91SAM9M10G45-EK";
+ compatible = "atmel,at91sam9m10g45ek", "atmel,at91sam9g45", "atmel,at91sam9";
+
+ chosen {
+ bootargs = "mem=64M console=ttyS0,115200 mtdparts=atmel_nand:4M(bootstrap/uboot/kernel)ro,60M(rootfs),-(data) root=/dev/mtdblock1 rw rootfstype=jffs2";
+ };
+
+ memory@70000000 {
+ reg = <0x70000000 0x4000000>;
+ };
+
+ ahb {
+ apb {
+ dbgu: serial@ffffee00 {
+ status = "okay";
+ };
+
+ usart1: serial@fff90000 {
+ status = "okay";
+ };
+ };
+ };
+};
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index 2248467..4b59d96 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -442,6 +442,17 @@ endif
# ----------------------------------------------------------
+comment "Generic Board Type"
+
+config MACH_AT91SAM_DT
+ bool "Atmel AT91SAM Evaluation Kits with device-tree support"
+ select USE_OF
+ help
+ Select this if you want to experiment device-tree with
+ an Atmel Evaluation Kit.
+
+# ----------------------------------------------------------
+
comment "AT91 Board Options"
config MTD_AT91_DATAFLASH_CARD
diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index bf57e8b..3ff245e 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -74,6 +74,9 @@ obj-$(CONFIG_MACH_SNAPPER_9260) += board-snapper9260.o
# AT91SAM9G45 board-specific support
obj-$(CONFIG_MACH_AT91SAM9M10G45EK) += board-sam9m10g45ek.o
+# AT91SAM board with device-tree
+obj-$(CONFIG_MACH_AT91SAM_DT) += board-dt.o
+
# AT91CAP9 board-specific support
obj-$(CONFIG_MACH_AT91CAP9ADK) += board-cap9adk.o
diff --git a/arch/arm/mach-at91/Makefile.boot b/arch/arm/mach-at91/Makefile.boot
index 3462b81..d278863 100644
--- a/arch/arm/mach-at91/Makefile.boot
+++ b/arch/arm/mach-at91/Makefile.boot
@@ -16,3 +16,5 @@ else
params_phys-y := 0x20000100
initrd_phys-y := 0x20410000
endif
+
+dtb-$(CONFIG_MACH_AT91SAM_DT) += at91sam9m10g45ek.dtb
diff --git a/arch/arm/mach-at91/at91sam9g45.c b/arch/arm/mach-at91/at91sam9g45.c
index e04c5fb..8baf5a1 100644
--- a/arch/arm/mach-at91/at91sam9g45.c
+++ b/arch/arm/mach-at91/at91sam9g45.c
@@ -215,6 +215,12 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tcb0_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
+ /* more usart lookup table for DT entries */
+ CLKDEV_CON_DEV_ID("usart", "ffffee00.serial", &mck),
+ CLKDEV_CON_DEV_ID("usart", "fff8c000.serial", &usart0_clk),
+ CLKDEV_CON_DEV_ID("usart", "fff90000.serial", &usart1_clk),
+ CLKDEV_CON_DEV_ID("usart", "fff94000.serial", &usart2_clk),
+ CLKDEV_CON_DEV_ID("usart", "fff98000.serial", &usart3_clk),
};
static struct clk_lookup usart_clocks_lookups[] = {
diff --git a/arch/arm/mach-at91/board-dt.c b/arch/arm/mach-at91/board-dt.c
new file mode 100644
index 0000000..33a0d8b
--- /dev/null
+++ b/arch/arm/mach-at91/board-dt.c
@@ -0,0 +1,122 @@
+/*
+ * Setup code for AT91SAM Evaluation Kits with Device Tree support
+ *
+ * Covers: * AT91SAM9G45-EKES board
+ * * AT91SAM9M10-EKES board
+ * * AT91SAM9M10G45-EK board
+ *
+ * Copyright (C) 2011 Atmel,
+ * 2011 Nicolas Ferre <nicolas.ferre@atmel.com>
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/gpio.h>
+#include <linux/irqdomain.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+
+#include <mach/hardware.h>
+#include <mach/board.h>
+#include <mach/system_rev.h>
+#include <mach/at91sam9_smc.h>
+
+#include <asm/setup.h>
+#include <asm/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include "sam9_smc.h"
+#include "generic.h"
+
+
+static void __init ek_init_early(void)
+{
+ /* Initialize processor: 12.000 MHz crystal */
+ at91_initialize(12000000);
+
+ /* DGBU on ttyS0. (Rx & Tx only) */
+ at91_register_uart(0, 0, 0);
+
+ /* set serial console to ttyS0 (ie, DBGU) */
+ at91_set_serial_console(0);
+}
+
+/* det_pin is not connected */
+static struct atmel_nand_data __initdata ek_nand_data = {
+ .ale = 21,
+ .cle = 22,
+ .rdy_pin = AT91_PIN_PC8,
+ .enable_pin = AT91_PIN_PC14,
+};
+
+static struct sam9_smc_config __initdata ek_nand_smc_config = {
+ .ncs_read_setup = 0,
+ .nrd_setup = 2,
+ .ncs_write_setup = 0,
+ .nwe_setup = 2,
+
+ .ncs_read_pulse = 4,
+ .nrd_pulse = 4,
+ .ncs_write_pulse = 4,
+ .nwe_pulse = 4,
+
+ .read_cycle = 7,
+ .write_cycle = 7,
+
+ .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
+ .tdf_cycles = 3,
+};
+
+static void __init ek_add_device_nand(void)
+{
+ ek_nand_data.bus_width_16 = board_have_nand_16bit();
+ /* setup bus-width (8 or 16) */
+ if (ek_nand_data.bus_width_16)
+ ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
+ else
+ ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
+
+ /* configure chip-select 3 (NAND) */
+ sam9_smc_configure(3, &ek_nand_smc_config);
+
+ at91_add_device_nand(&ek_nand_data);
+}
+
+static const struct of_device_id aic_of_match[] __initconst = {
+ { .compatible = "atmel,at91rm9200-aic", },
+ {},
+};
+
+static void __init at91_dt_init_irq(void)
+{
+ irq_domain_generate_simple(aic_of_match, 0xfffff000, 0);
+ at91_init_irq_default();
+}
+
+static void __init at91_dt_device_init(void)
+{
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+
+ /* NAND */
+ ek_add_device_nand();
+}
+
+static const char *at91_dt_board_compat[] __initdata = {
+ "atmel,at91sam9m10g45ek",
+ NULL
+};
+
+DT_MACHINE_START(at91sam_dt, "Atmel AT91SAM (Device Tree)")
+ /* Maintainer: Atmel */
+ .timer = &at91sam926x_timer,
+ .map_io = at91_map_io,
+ .init_early = ek_init_early,
+ .init_irq = at91_dt_init_irq,
+ .init_machine = at91_dt_device_init,
+ .dt_compat = at91_dt_board_compat,
+MACHINE_END