diff options
author | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2012-11-16 16:39:45 +0100 |
---|---|---|
committer | Jason Cooper <jason@lakedaemon.net> | 2012-11-21 21:00:45 +0000 |
commit | 1bffb4a8729838f5ee27364803406416459c3252 (patch) | |
tree | 5c8c1c63d843d902c92d03fc90edff3f0e77b29b /arch/arm/mach-orion5x | |
parent | 9973978614f6cdec2ba52ce161a4bd084b252267 (diff) |
arm: orion5x: basic Device Tree support
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@free-electrons.com>
Tested by: Maxime Hadjinlian <mhadjinlian@lacie.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'arch/arm/mach-orion5x')
-rw-r--r-- | arch/arm/mach-orion5x/Kconfig | 7 | ||||
-rw-r--r-- | arch/arm/mach-orion5x/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/mach-orion5x/board-dt.c | 76 | ||||
-rw-r--r-- | arch/arm/mach-orion5x/common.c | 4 | ||||
-rw-r--r-- | arch/arm/mach-orion5x/common.h | 2 |
5 files changed, 89 insertions, 2 deletions
diff --git a/arch/arm/mach-orion5x/Kconfig b/arch/arm/mach-orion5x/Kconfig index 0673f0c1043..0910c3bd0c9 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 7f18cdacd48..843e6deb66d 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 00000000000..a26397f58f1 --- /dev/null +++ b/arch/arm/mach-orion5x/board-dt.c @@ -0,0 +1,76 @@ +/* + * Copyright 2012 (C), Thomas Petazzoni <thomas.petazzoni@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@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 b3eb3da0116..550f92320af 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 31bab92ce03..2033b79089a 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; |