summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-ux500
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-28 12:34:33 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-28 12:34:33 -0700
commit09893ee84591b0417a9186a7e7cf1503ccf99ac2 (patch)
treeda8b044ad157b82203df04ae48cb60f4737cc390 /arch/arm/mach-ux500
parent4bb2d1009f671815870e8f78e826e4f9071392a7 (diff)
parent7d1206bc2859c6e9f46e35ae697c138e7d7858a7 (diff)
Merge tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull "ARM: More device tree support updates" from Olof Johansson: "This branch contains a number of updates for device tree support on several ARM platforms, in particular: * AT91 continues the device tree conversion adding support for a number of on-chip drivers and other functionality * ux500 adds probing of some of the core SoC blocks through device tree * Initial device tree support for ST SPEAr600 platforms * kirkwood continues the conversion to device-tree probing" Manually merge arch/arm/mach-ux500/Kconfig due to MACH_U8500 rename, and drivers/usb/gadget/at91_udc.c due to header file include cleanups. Also do an "evil merge" for the MACH_U8500 config option rename that the affected RMI4 touchscreen driver in staging. It's called MACH_MOP500 now, and it was missed during previous merges. * tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (48 commits) ARM: SPEAr600: Add device-tree support to SPEAr600 boards ARM: ux500: Provide local timer support for Device Tree ARM: ux500: Enable PL022 SSP Controller in Device Tree ARM: ux500: Enable PL310 Level 2 Cache Controller in Device Tree ARM: ux500: Enable PL011 AMBA UART Controller for Device Tree ARM: ux500: Enable Cortex-A9 GIC (Generic Interrupt Controller) in Device Tree ARM: ux500: db8500: list most devices in the snowball device tree ARM: ux500: split dts file for snowball into generic part ARM: ux500: combine the board init functions for DT boot ARM: ux500: Initial Device Tree support for Snowball ARM: ux500: CONFIG: Enable Device Tree support for future endeavours ARM: kirkwood: use devicetree for rtc-mv ARM: kirkwood: rtc-mv devicetree bindings ARM: kirkwood: fdt: define uart[01] as disabled, enable uart0 ARM: kirkwood: fdt: facilitate new boards during fdt migration ARM: kirkwood: fdt: absorb kirkwood_init() ARM: kirkwood: fdt: use mrvl ticker symbol ARM: orion: wdt: use resource vice direct access ARM: Kirkwood: Remove tclk from kirkwood_asoc_platform_data. ARM: orion: spi: remove enable_clock_fix which is not used ...
Diffstat (limited to 'arch/arm/mach-ux500')
-rw-r--r--arch/arm/mach-ux500/Kconfig6
-rw-r--r--arch/arm/mach-ux500/Makefile.boot1
-rw-r--r--arch/arm/mach-ux500/board-mop500.c99
-rw-r--r--arch/arm/mach-ux500/cache-l2x0.c7
-rw-r--r--arch/arm/mach-ux500/cpu.c14
-rw-r--r--arch/arm/mach-ux500/timer.c11
6 files changed, 131 insertions, 7 deletions
diff --git a/arch/arm/mach-ux500/Kconfig b/arch/arm/mach-ux500/Kconfig
index 8904d18de01..880d02ec89d 100644
--- a/arch/arm/mach-ux500/Kconfig
+++ b/arch/arm/mach-ux500/Kconfig
@@ -58,6 +58,12 @@ config UX500_AUTO_PLATFORM
At least one platform needs to be selected in order to build
a working kernel. If everything else is disabled, this
automatically enables MACH_MOP500.
+
+config MACH_UX500_DT
+ bool "Generic U8500 support using device tree"
+ depends on MACH_MOP500
+ select USE_OF
+
endmenu
config UX500_DEBUG_UART
diff --git a/arch/arm/mach-ux500/Makefile.boot b/arch/arm/mach-ux500/Makefile.boot
index ff0a4b5b0a8..dd5cd00e255 100644
--- a/arch/arm/mach-ux500/Makefile.boot
+++ b/arch/arm/mach-ux500/Makefile.boot
@@ -2,3 +2,4 @@
params_phys-y := 0x00000100
initrd_phys-y := 0x00800000
+dtb-$(CONFIG_MACH_SNOWBALL) += snowball.dtb
diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c
index 29d33037499..77d03c1fbd0 100644
--- a/arch/arm/mach-ux500/board-mop500.c
+++ b/arch/arm/mach-ux500/board-mop500.c
@@ -30,6 +30,9 @@
#include <linux/gpio_keys.h>
#include <linux/delay.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+
#include <linux/leds.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@@ -440,7 +443,7 @@ static struct stedma40_chan_cfg ssp0_dma_cfg_tx = {
};
#endif
-static struct pl022_ssp_controller ssp0_platform_data = {
+static struct pl022_ssp_controller ssp0_plat = {
.bus_id = 0,
#ifdef CONFIG_STE_DMA40
.enable_dma = 1,
@@ -458,7 +461,7 @@ static struct pl022_ssp_controller ssp0_platform_data = {
static void __init mop500_spi_init(struct device *parent)
{
- db8500_add_ssp0(parent, &ssp0_platform_data);
+ db8500_add_ssp0(parent, &ssp0_plat);
}
#ifdef CONFIG_STE_DMA40
@@ -618,6 +621,7 @@ static void __init mop500_init_machine(void)
mop500_pins_init();
+ /* FIXME: parent of ab8500 should be prcmu */
for (i = 0; i < ARRAY_SIZE(mop500_platform_devs); i++)
mop500_platform_devs[i]->dev.parent = parent;
@@ -738,3 +742,94 @@ MACHINE_START(SNOWBALL, "Calao Systems Snowball platform")
.handle_irq = gic_handle_irq,
.init_machine = snowball_init_machine,
MACHINE_END
+
+#ifdef CONFIG_MACH_UX500_DT
+
+struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = {
+ OF_DEV_AUXDATA("arm,pl011", 0x80120000, "uart0", &uart0_plat),
+ OF_DEV_AUXDATA("arm,pl011", 0x80121000, "uart1", &uart1_plat),
+ OF_DEV_AUXDATA("arm,pl011", 0x80007000, "uart2", &uart2_plat),
+ OF_DEV_AUXDATA("arm,pl022", 0x80002000, "ssp0", &ssp0_plat),
+ {},
+};
+
+static const struct of_device_id u8500_soc_node[] = {
+ /* only create devices below soc node */
+ { .compatible = "stericsson,db8500", },
+ { },
+};
+
+static void __init u8500_init_machine(void)
+{
+ struct device *parent = NULL;
+ int i2c0_devs;
+ int i;
+
+ parent = u8500_init_devices();
+ i2c0_devs = ARRAY_SIZE(mop500_i2c0_devices);
+
+ for (i = 0; i < ARRAY_SIZE(mop500_platform_devs); i++)
+ mop500_platform_devs[i]->dev.parent = parent;
+ for (i = 0; i < ARRAY_SIZE(snowball_platform_devs); i++)
+ snowball_platform_devs[i]->dev.parent = parent;
+
+ /* automatically probe child nodes of db8500 device */
+ of_platform_populate(NULL, u8500_soc_node, u8500_auxdata_lookup, parent);
+
+ if (of_machine_is_compatible("st-ericsson,mop500")) {
+ mop500_gpio_keys[0].gpio = GPIO_PROX_SENSOR;
+ mop500_pins_init();
+
+ platform_add_devices(mop500_platform_devs,
+ ARRAY_SIZE(mop500_platform_devs));
+
+ mop500_sdi_init(parent);
+ } else if (of_machine_is_compatible("calaosystems,snowball-a9500")) {
+ snowball_pins_init();
+ platform_add_devices(snowball_platform_devs,
+ ARRAY_SIZE(snowball_platform_devs));
+
+ snowball_sdi_init(parent);
+ } else if (of_machine_is_compatible("st-ericsson,hrefv60+")) {
+ /*
+ * The HREFv60 board removed a GPIO expander and routed
+ * all these GPIO pins to the internal GPIO controller
+ * instead.
+ */
+ mop500_gpio_keys[0].gpio = HREFV60_PROX_SENSE_GPIO;
+ i2c0_devs -= NUM_PRE_V60_I2C0_DEVICES;
+ hrefv60_pins_init();
+ platform_add_devices(mop500_platform_devs,
+ ARRAY_SIZE(mop500_platform_devs));
+
+ hrefv60_sdi_init(parent);
+ }
+ mop500_i2c_init(parent);
+
+ i2c_register_board_info(0, mop500_i2c0_devices, i2c0_devs);
+ i2c_register_board_info(2, mop500_i2c2_devices,
+ ARRAY_SIZE(mop500_i2c2_devices));
+
+ /* This board has full regulator constraints */
+ regulator_has_full_constraints();
+}
+
+static const char * u8500_dt_board_compat[] = {
+ "calaosystems,snowball-a9500",
+ "st-ericsson,hrefv60+",
+ "st-ericsson,u8500",
+ "st-ericsson,mop500",
+ NULL,
+};
+
+
+DT_MACHINE_START(U8500_DT, "ST-Ericsson U8500 platform (Device Tree Support)")
+ .map_io = u8500_map_io,
+ .init_irq = ux500_init_irq,
+ /* we re-use nomadik timer here */
+ .timer = &ux500_timer,
+ .handle_irq = gic_handle_irq,
+ .init_machine = u8500_init_machine,
+ .dt_compat = u8500_dt_board_compat,
+MACHINE_END
+#endif
diff --git a/arch/arm/mach-ux500/cache-l2x0.c b/arch/arm/mach-ux500/cache-l2x0.c
index da5569d83d5..77a75ed0df6 100644
--- a/arch/arm/mach-ux500/cache-l2x0.c
+++ b/arch/arm/mach-ux500/cache-l2x0.c
@@ -5,6 +5,8 @@
*/
#include <linux/io.h>
+#include <linux/of.h>
+
#include <asm/cacheflush.h>
#include <asm/hardware/cache-l2x0.h>
#include <mach/hardware.h>
@@ -45,7 +47,10 @@ static int __init ux500_l2x0_init(void)
ux500_l2x0_unlock();
/* 64KB way size, 8 way associativity, force WA */
- l2x0_init(l2x0_base, 0x3e060000, 0xc0000fff);
+ if (of_have_populated_dt())
+ l2x0_of_init(0x3e060000, 0xc0000fff);
+ else
+ l2x0_init(l2x0_base, 0x3e060000, 0xc0000fff);
/*
* We can't disable l2 as we are in non secure mode, currently
diff --git a/arch/arm/mach-ux500/cpu.c b/arch/arm/mach-ux500/cpu.c
index 6242e88e5fd..d11f3892a27 100644
--- a/arch/arm/mach-ux500/cpu.c
+++ b/arch/arm/mach-ux500/cpu.c
@@ -16,6 +16,8 @@
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/stat.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
#include <asm/hardware/gic.h>
#include <asm/mach/map.h>
@@ -28,6 +30,11 @@
void __iomem *_PRCMU_BASE;
+static const struct of_device_id ux500_dt_irq_match[] = {
+ { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
+ {},
+};
+
void __init ux500_init_irq(void)
{
void __iomem *dist_base;
@@ -42,7 +49,12 @@ void __init ux500_init_irq(void)
} else
ux500_unknown_soc();
- gic_init(0, 29, dist_base, cpu_base);
+#ifdef CONFIG_OF
+ if (of_have_populated_dt())
+ of_irq_init(ux500_dt_irq_match);
+ else
+#endif
+ gic_init(0, 29, dist_base, cpu_base);
/*
* Init clocks here so that they are available for system timer
diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c
index e9d580702fb..d37df98b5c3 100644
--- a/arch/arm/mach-ux500/timer.c
+++ b/arch/arm/mach-ux500/timer.c
@@ -7,6 +7,7 @@
#include <linux/io.h>
#include <linux/errno.h>
#include <linux/clksrc-dbx500-prcmu.h>
+#include <linux/of.h>
#include <asm/smp_twd.h>
@@ -30,9 +31,13 @@ static void __init ux500_twd_init(void)
twd_local_timer = cpu_is_u5500() ? &u5500_twd_local_timer :
&u8500_twd_local_timer;
- err = twd_local_timer_register(twd_local_timer);
- if (err)
- pr_err("twd_local_timer_register failed %d\n", err);
+ if (of_have_populated_dt())
+ twd_local_timer_of_register();
+ else {
+ err = twd_local_timer_register(twd_local_timer);
+ if (err)
+ pr_err("twd_local_timer_register failed %d\n", err);
+ }
}
#else
#define ux500_twd_init() do { } while(0)