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authorMagnus Damm <damm@opensource.se>2012-03-28 08:53:40 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2012-04-11 12:19:31 +0200
commit3b7b70552afe351a8bd8fff1eb2d60aab2206576 (patch)
tree7e62f61c99d83da8c22236cf8d4709d14a5ceb7b /arch/arm
parentARM: mach-shmobile: Rework sh7372 INTCS demuxer V2 (diff)
downloadlinux-3b7b70552afe351a8bd8fff1eb2d60aab2206576.tar.xz
linux-3b7b70552afe351a8bd8fff1eb2d60aab2206576.zip
ARM: mach-shmobile: sh7372 generic board support via DT V2
Add generic DT board support for the sh7372 SoC V2. SCIF serial ports and timers are kept as regular platform devices. Other on-chip and on-board devices should be configured via the device tree. Tested on the mackerel board via kexec using a zImage kernel with an appended dtb. At this point there is no interrupt controller support in place but such code will be added over time when proper IRQ domain support has been added to INTC. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/boot/dts/sh7372.dtsi21
-rw-r--r--arch/arm/mach-shmobile/setup-sh7372.c48
2 files changed, 69 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/sh7372.dtsi b/arch/arm/boot/dts/sh7372.dtsi
new file mode 100644
index 000000000000..677fc603f8b3
--- /dev/null
+++ b/arch/arm/boot/dts/sh7372.dtsi
@@ -0,0 +1,21 @@
+/*
+ * Device Tree Source for the sh7372 SoC
+ *
+ * Copyright (C) 2012 Renesas Solutions Corp.
+ *
+ * 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"
+
+/ {
+ compatible = "renesas,sh7372";
+
+ cpus {
+ cpu@0 {
+ compatible = "arm,cortex-a8";
+ };
+ };
+};
diff --git a/arch/arm/mach-shmobile/setup-sh7372.c b/arch/arm/mach-shmobile/setup-sh7372.c
index 2fe8f83ca124..4c7fece5ef92 100644
--- a/arch/arm/mach-shmobile/setup-sh7372.c
+++ b/arch/arm/mach-shmobile/setup-sh7372.c
@@ -22,6 +22,7 @@
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
+#include <linux/of_platform.h>
#include <linux/uio_driver.h>
#include <linux/delay.h>
#include <linux/input.h>
@@ -1092,3 +1093,50 @@ void __init sh7372_add_early_devices(void)
/* override timer setup with soc-specific code */
shmobile_timer.init = sh7372_earlytimer_init;
}
+
+#ifdef CONFIG_USE_OF
+
+void __init sh7372_add_early_devices_dt(void)
+{
+ shmobile_setup_delay(800, 1, 3); /* Cortex-A8 @ 800MHz */
+
+ early_platform_add_devices(sh7372_early_devices,
+ ARRAY_SIZE(sh7372_early_devices));
+
+ /* setup early console here as well */
+ shmobile_setup_console();
+}
+
+static const struct of_dev_auxdata sh7372_auxdata_lookup[] __initconst = {
+ { }
+};
+
+void __init sh7372_add_standard_devices_dt(void)
+{
+ /* clocks are setup late during boot in the case of DT */
+ sh7372_clock_init();
+
+ platform_add_devices(sh7372_early_devices,
+ ARRAY_SIZE(sh7372_early_devices));
+
+ of_platform_populate(NULL, of_default_bus_match_table,
+ sh7372_auxdata_lookup, NULL);
+}
+
+static const char *sh7372_boards_compat_dt[] __initdata = {
+ "renesas,sh7372",
+ NULL,
+};
+
+DT_MACHINE_START(SH7372_DT, "Generic SH7372 (Flattened Device Tree)")
+ .map_io = sh7372_map_io,
+ .init_early = sh7372_add_early_devices_dt,
+ .nr_irqs = NR_IRQS_LEGACY,
+ .init_irq = sh7372_init_irq,
+ .handle_irq = shmobile_handle_irq_intc,
+ .init_machine = sh7372_add_standard_devices_dt,
+ .timer = &shmobile_timer,
+ .dt_compat = sh7372_boards_compat_dt,
+MACHINE_END
+
+#endif /* CONFIG_USE_OF */