[PATCH] ARM: SPEAr600: Add device-tree support to SPEAr600 boards
Stefan Roese
sr at denx.de
Wed Mar 14 01:47:12 EST 2012
This patch adds a generic target for SPEAr600 board that can be
configured via the device-tree. Currently only interrupts are
configured via device-tree. Other peripheral devices (e.g.
ethernet, I2C, SMI flash, FSMC NAND flash etc) will follow in
later patches.
Only the spear600-evb is currently supported. Other SPEAr600
based boards will follow later.
Signed-off-by: Stefan Roese <sr at denx.de>
Cc: Viresh Kumar <viresh.kumar at st.com>
---
Documentation/devicetree/bindings/arm/spear.txt | 6 ++
arch/arm/boot/dts/spear600-evb.dts | 23 +++++++
arch/arm/boot/dts/spear600.dtsi | 49 +++++++++++++++
arch/arm/mach-spear6xx/Kconfig | 7 +++
arch/arm/mach-spear6xx/Makefile | 1 +
arch/arm/mach-spear6xx/board-dt.c | 75 +++++++++++++++++++++++
6 files changed, 161 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/spear.txt
create mode 100644 arch/arm/boot/dts/spear600-evb.dts
create mode 100644 arch/arm/boot/dts/spear600.dtsi
create mode 100644 arch/arm/mach-spear6xx/board-dt.c
diff --git a/Documentation/devicetree/bindings/arm/spear.txt b/Documentation/devicetree/bindings/arm/spear.txt
new file mode 100644
index 0000000..8e9f83e
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/spear.txt
@@ -0,0 +1,6 @@
+ST SPEAr Platforms Device Tree Bindings
+---------------------------------------
+
+SPEAr600 EVB (Evaluation Board)
+Required root node properties:
+ - compatible = "st,spear600-evb";
diff --git a/arch/arm/boot/dts/spear600-evb.dts b/arch/arm/boot/dts/spear600-evb.dts
new file mode 100644
index 0000000..f92d099
--- /dev/null
+++ b/arch/arm/boot/dts/spear600-evb.dts
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ * Copyright 2011 Linaro Ltd.
+ *
+ * Copyright 2012 Stefan Roese <sr at denx.de>
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/dts-v1/;
+/include/ "spear600.dtsi"
+
+/ {
+ model = "ST SPEAr600 Evaluation Board";
+ compatible = "st,spear600-evb";
+ #address-cells = <1>;
+ #size-cells = <1>;
+};
diff --git a/arch/arm/boot/dts/spear600.dtsi b/arch/arm/boot/dts/spear600.dtsi
new file mode 100644
index 0000000..82b086d
--- /dev/null
+++ b/arch/arm/boot/dts/spear600.dtsi
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ * Copyright 2011 Linaro Ltd.
+ *
+ * Copyright 2012 Stefan Roese <sr at denx.de>
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/include/ "skeleton.dtsi"
+
+/ {
+ cpus {
+ cpu at 0 {
+ compatible = "arm,arm926ejs";
+ };
+ };
+
+ memory {
+ device_type = "memory";
+ reg = <0 0>; /* Filled by U-Boot */
+ };
+
+ soc {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "simple-bus";
+ ranges;
+
+ vic0: interrupt-controller at f1100000 {
+ compatible = "arm,pl190-vic";
+ interrupt-controller;
+ reg = <0xf1100000 0x1000>;
+ #interrupt-cells = <1>;
+ };
+
+ vic1: interrupt-controller at f1000000 {
+ compatible = "arm,pl190-vic";
+ interrupt-controller;
+ reg = <0xf1000000 0x1000>;
+ #interrupt-cells = <1>;
+ };
+ };
+};
diff --git a/arch/arm/mach-spear6xx/Kconfig b/arch/arm/mach-spear6xx/Kconfig
index ff4ae5b..7777f72 100644
--- a/arch/arm/mach-spear6xx/Kconfig
+++ b/arch/arm/mach-spear6xx/Kconfig
@@ -11,6 +11,13 @@ config BOARD_SPEAR600_EVB
help
Supports ST SPEAr600 Evaluation Board
+config BOARD_SPEAR600_DT
+ bool "SPEAr600 generic board configured via device-tree"
+ select MACH_SPEAR600
+ select USE_OF
+ help
+ Supports ST SPEAr600 boards configured via the device-tree
+
endmenu
config MACH_SPEAR600
diff --git a/arch/arm/mach-spear6xx/Makefile b/arch/arm/mach-spear6xx/Makefile
index cc1a4d8..e2d79b8 100644
--- a/arch/arm/mach-spear6xx/Makefile
+++ b/arch/arm/mach-spear6xx/Makefile
@@ -10,3 +10,4 @@ obj-$(CONFIG_MACH_SPEAR600) += spear600.o
# spear600 boards files
obj-$(CONFIG_BOARD_SPEAR600_EVB) += spear600_evb.o
+obj-$(CONFIG_BOARD_SPEAR600_DT) += board-dt.o
diff --git a/arch/arm/mach-spear6xx/board-dt.c b/arch/arm/mach-spear6xx/board-dt.c
new file mode 100644
index 0000000..ee4ff33
--- /dev/null
+++ b/arch/arm/mach-spear6xx/board-dt.c
@@ -0,0 +1,75 @@
+/*
+ * arch/arm/mach-spear6xx/board-dt.c
+ *
+ * Generic SPEAr600 platform support
+ *
+ * Copyright (C) 2009 ST Microelectronics
+ * Viresh Kumar<viresh.kumar at st.com>
+ *
+ * Copyright 2012 Stefan Roese <sr at denx.de>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
+#include <asm/hardware/vic.h>
+#include <asm/mach/arch.h>
+#include <asm/mach-types.h>
+#include <mach/generic.h>
+#include <mach/hardware.h>
+
+static struct amba_device *amba_devs[] __initdata = {
+ &gpio_device[0],
+ &gpio_device[1],
+ &gpio_device[2],
+ &uart_device[0],
+ &uart_device[1],
+};
+
+static struct platform_device *plat_devs[] __initdata = {
+};
+
+static void __init spear600_dt_init(void)
+{
+ unsigned int i;
+
+ /* call spear600 machine init function */
+ spear600_init();
+
+ /* Add Platform Devices */
+ platform_add_devices(plat_devs, ARRAY_SIZE(plat_devs));
+
+ /* Add Amba Devices */
+ for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
+ amba_device_register(amba_devs[i], &iomem_resource);
+}
+
+static const char *spear600_dt_board_compat[] = {
+ "st,spear600-evb",
+ NULL
+};
+
+static const struct of_device_id vic_of_match[] __initconst = {
+ { .compatible = "arm,pl190-vic", .data = vic_of_init, },
+ { /* Sentinel */ }
+};
+
+static void __init spear6xx_dt_init_irq(void)
+{
+ of_irq_init(vic_of_match);
+}
+
+DT_MACHINE_START(SPEAR600_DT, "ST-SPEAR600-DT")
+ .map_io = spear6xx_map_io,
+ .init_irq = spear6xx_dt_init_irq,
+ .handle_irq = vic_handle_irq,
+ .timer = &spear6xx_timer,
+ .init_machine = spear600_dt_init,
+ .restart = spear_restart,
+ .dt_compat = spear600_dt_board_compat,
+MACHINE_END
--
1.7.9.2
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