[PATCH 2/4] arm: orion5x: basic Device Tree support
Thomas Petazzoni
thomas.petazzoni at free-electrons.com
Fri Nov 16 10:39:45 EST 2012
This commit adds basic DT support for the Orion5x SoC family. It adds
an orion5x.dtsi description of the Orion5x SoC as well as the needed
DT_MACHINE structure to support boards converted to DT in the future.
So far, the Device Tree contains the interrupt controller, the GPIO
bank, the UART controllers, the SPI controller, the watchdog, the SATA
controller, the I2C controller and the cryptographic engine.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Tested by: Maxime Hadjinlian <mhadjinlian at lacie.com>
---
arch/arm/boot/dts/orion5x.dtsi | 98 ++++++++++++++++++++++++++++++++++++++
arch/arm/mach-orion5x/Kconfig | 7 +++
arch/arm/mach-orion5x/Makefile | 2 +
arch/arm/mach-orion5x/board-dt.c | 76 +++++++++++++++++++++++++++++
arch/arm/mach-orion5x/common.c | 4 +-
arch/arm/mach-orion5x/common.h | 2 +
6 files changed, 187 insertions(+), 2 deletions(-)
create mode 100644 arch/arm/boot/dts/orion5x.dtsi
create mode 100644 arch/arm/mach-orion5x/board-dt.c
diff --git a/arch/arm/boot/dts/orion5x.dtsi b/arch/arm/boot/dts/orion5x.dtsi
new file mode 100644
index 0000000..8aad00f
--- /dev/null
+++ b/arch/arm/boot/dts/orion5x.dtsi
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2012 Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
+ *
+ * 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/ "skeleton.dtsi"
+
+/ {
+ model = "Marvell Orion5x SoC";
+ compatible = "marvell,orion5x";
+ interrupt-parent = <&intc>;
+
+ intc: interrupt-controller {
+ compatible = "marvell,orion-intc", "marvell,intc";
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ reg = <0xf1020204 0x04>;
+ };
+
+ ocp at f1000000 {
+ compatible = "simple-bus";
+ ranges = <0x00000000 0xf1000000 0x4000000
+ 0xf2200000 0xf2200000 0x0000800>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ gpio0: gpio at 10100 {
+ compatible = "marvell,orion-gpio";
+ #gpio-cells = <2>;
+ gpio-controller;
+ reg = <0x10100 0x40>;
+ ngpio = <32>;
+ interrupts = <6>, <7>, <8>, <9>;
+ };
+
+ serial at 12000 {
+ compatible = "ns16550a";
+ reg = <0x12000 0x100>;
+ reg-shift = <2>;
+ interrupts = <3>;
+ /* set clock-frequency in board dts */
+ status = "disabled";
+ };
+
+ serial at 12100 {
+ compatible = "ns16550a";
+ reg = <0x12100 0x100>;
+ reg-shift = <2>;
+ interrupts = <4>;
+ /* set clock-frequency in board dts */
+ status = "disabled";
+ };
+
+ spi at 10600 {
+ compatible = "marvell,orion-spi";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ cell-index = <0>;
+ reg = <0x10600 0x28>;
+ status = "disabled";
+ };
+
+ wdt at 20300 {
+ compatible = "marvell,orion-wdt";
+ reg = <0x20300 0x28>;
+ status = "okay";
+ };
+
+ sata at 80000 {
+ compatible = "marvell,orion-sata";
+ reg = <0x80000 0x5000>;
+ interrupts = <29>;
+ status = "disabled";
+ };
+
+ i2c at 11000 {
+ compatible = "marvell,mv64xxx-i2c";
+ reg = <0x11000 0x20>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ interrupts = <5>;
+ clock-frequency = <100000>;
+ status = "disabled";
+ };
+
+ crypto at 90000 {
+ compatible = "marvell,orion-crypto";
+ reg = <0x90000 0x10000>,
+ <0xf2200000 0x800>;
+ reg-names = "regs", "sram";
+ interrupts = <22>;
+ status = "okay";
+ };
+ };
+};
diff --git a/arch/arm/mach-orion5x/Kconfig b/arch/arm/mach-orion5x/Kconfig
index 0673f0c..0910c3b 100644
--- a/arch/arm/mach-orion5x/Kconfig
+++ b/arch/arm/mach-orion5x/Kconfig
@@ -2,6 +2,13 @@ if ARCH_ORION5X
menu "Orion Implementations"
+config ARCH_ORION5X_DT
+ bool "Marvell Orion5x Flattened Device Tree"
+ select USE_OF
+ help
+ Say 'Y' here if you want your kernel to support the
+ Marvell Orion5x using flattened device tree.
+
config MACH_DB88F5281
bool "Marvell Orion-2 Development Board"
select I2C_BOARDINFO
diff --git a/arch/arm/mach-orion5x/Makefile b/arch/arm/mach-orion5x/Makefile
index 7f18cda..843e6de 100644
--- a/arch/arm/mach-orion5x/Makefile
+++ b/arch/arm/mach-orion5x/Makefile
@@ -22,3 +22,5 @@ obj-$(CONFIG_MACH_RD88F5181L_GE) += rd88f5181l-ge-setup.o
obj-$(CONFIG_MACH_RD88F5181L_FXO) += rd88f5181l-fxo-setup.o
obj-$(CONFIG_MACH_RD88F6183AP_GE) += rd88f6183ap-ge-setup.o
obj-$(CONFIG_MACH_LINKSTATION_LSCHL) += ls-chl-setup.o
+
+obj-$(CONFIG_ARCH_ORION5X_DT) += board-dt.o
diff --git a/arch/arm/mach-orion5x/board-dt.c b/arch/arm/mach-orion5x/board-dt.c
new file mode 100644
index 0000000..a26397f
--- /dev/null
+++ b/arch/arm/mach-orion5x/board-dt.c
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2012 (C), Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
+ *
+ * arch/arm/mach-orion5x/board-dt.c
+ *
+ * Flattened Device Tree board initialization
+ *
+ * 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/kernel.h>
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <asm/system_misc.h>
+#include <asm/mach/arch.h>
+#include <mach/orion5x.h>
+#include <plat/irq.h>
+#include "common.h"
+
+struct of_dev_auxdata orion5x_auxdata_lookup[] __initdata = {
+ OF_DEV_AUXDATA("marvell,orion-spi", 0xf1010600, "orion_spi.0", NULL),
+ OF_DEV_AUXDATA("marvell,mv64xxx-i2c", 0xf1011000, "mv64xxx_i2c.0",
+ NULL),
+ OF_DEV_AUXDATA("marvell,orion-wdt", 0xf1020300, "orion_wdt", NULL),
+ OF_DEV_AUXDATA("marvell,orion-sata", 0xf1080000, "sata_mv.0", NULL),
+ OF_DEV_AUXDATA("marvell,orion-crypto", 0xf1090000, "mv_crypto", NULL),
+ {},
+};
+
+static void __init orion5x_dt_init(void)
+{
+ char *dev_name;
+ u32 dev, rev;
+
+ orion5x_id(&dev, &rev, &dev_name);
+ printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, orion5x_tclk);
+
+ /*
+ * Setup Orion address map
+ */
+ orion5x_setup_cpu_mbus_bridge();
+
+ /* Setup root of clk tree */
+ clk_init();
+
+ /*
+ * Don't issue "Wait for Interrupt" instruction if we are
+ * running on D0 5281 silicon.
+ */
+ if (dev == MV88F5281_DEV_ID && rev == MV88F5281_REV_D0) {
+ printk(KERN_INFO "Orion: Applying 5281 D0 WFI workaround.\n");
+ disable_hlt();
+ }
+
+ of_platform_populate(NULL, of_default_bus_match_table,
+ orion5x_auxdata_lookup, NULL);
+}
+
+static const char *orion5x_dt_compat[] = {
+ "marvell,orion5x",
+ NULL,
+};
+
+DT_MACHINE_START(ORION5X_DT, "Marvell Orion5x (Flattened Device Tree)")
+ /* Maintainer: Thomas Petazzoni <thomas.petazzoni at free-electrons.com> */
+ .map_io = orion5x_map_io,
+ .init_early = orion5x_init_early,
+ .init_irq = orion_dt_init_irq,
+ .timer = &orion5x_timer,
+ .init_machine = orion5x_dt_init,
+ .restart = orion5x_restart,
+ .dt_compat = orion5x_dt_compat,
+MACHINE_END
diff --git a/arch/arm/mach-orion5x/common.c b/arch/arm/mach-orion5x/common.c
index b3eb3da..550f923 100644
--- a/arch/arm/mach-orion5x/common.c
+++ b/arch/arm/mach-orion5x/common.c
@@ -65,7 +65,7 @@ void __init orion5x_map_io(void)
****************************************************************************/
static struct clk *tclk;
-static void __init clk_init(void)
+void __init clk_init(void)
{
tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT,
orion5x_tclk);
@@ -236,7 +236,7 @@ struct sys_timer orion5x_timer = {
/*
* Identify device ID and rev from PCIe configuration header space '0'.
*/
-static void __init orion5x_id(u32 *dev, u32 *rev, char **dev_name)
+void __init orion5x_id(u32 *dev, u32 *rev, char **dev_name)
{
orion5x_pcie_id(dev, rev);
diff --git a/arch/arm/mach-orion5x/common.h b/arch/arm/mach-orion5x/common.h
index 31bab92..2033b79 100644
--- a/arch/arm/mach-orion5x/common.h
+++ b/arch/arm/mach-orion5x/common.h
@@ -12,6 +12,8 @@ void orion5x_map_io(void);
void orion5x_init_early(void);
void orion5x_init_irq(void);
void orion5x_init(void);
+void orion5x_id(u32 *dev, u32 *rev, char **dev_name);
+void clk_init(void);
extern int orion5x_tclk;
extern struct sys_timer orion5x_timer;
--
1.7.9.5
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