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Date: Fri, 16 Aug 2013 21:41:38 +0200
From: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
To: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Cc: Russell King <linux@....linux.org.uk>,
Jason Cooper <jason@...edaemon.net>,
Andrew Lunn <andrew@...n.ch>,
Gregory Clement <gregory.clement@...e-electrons.com>,
Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
Arnd Bergmann <arnd@...db.de>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [RFC v1 5/5] ARM: mvebu: add board init for Armada 1500
This adds initial setup for the Marvell Armada 1500 SoCs. The code
is fairly straight-forward, but especially _timer_and_clk_init()
can be simplified by using default arch hooks. I will have some time
until mach-mvebu is prepared for other SoCs moving over, so I can
catch up with latest machine simplifications.
I am not so sure about the .map_io but I didn't yet fully understand
the mapping requirement. Anyway, it is required for iomap and friends
to work and basically remaps physical register addressed onto the same
virtual addresses.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
---
Cc: Russell King <linux@....linux.org.uk>
Cc: Jason Cooper <jason@...edaemon.net>
Cc: Andrew Lunn <andrew@...n.ch>
Cc: Gregory Clement <gregory.clement@...e-electrons.com>
Cc: Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
---
arch/arm/mach-mvebu/Kconfig | 15 +++++++++
arch/arm/mach-mvebu/Makefile | 13 ++++----
arch/arm/mach-mvebu/armada-1500.c | 63 +++++++++++++++++++++++++++++++++++++
3 files changed, 85 insertions(+), 6 deletions(-)
create mode 100644 arch/arm/mach-mvebu/armada-1500.c
diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig
index 9eb63d7..e2e93ed 100644
--- a/arch/arm/mach-mvebu/Kconfig
+++ b/arch/arm/mach-mvebu/Kconfig
@@ -36,6 +36,21 @@ config MACH_ARMADA_370
Say 'Y' here if you want your kernel to support boards based
on the Marvell Armada 370 SoC with device tree.
+config MACH_ARMADA_1500
+ bool "Marvell Armada 1500 boards"
+ select ARMADA_1500_CLK
+ select ARM_GIC
+ select CACHE_L2X0
+ select CPU_PJ4B
+ select DW_APB_TIMER_OF
+ select LOCAL_TIMERS if SMP
+ select HAVE_ARM_TWD if LOCAL_TIMERS
+ select HAVE_SMP
+ select PINCTRL_ARMADA_1500
+ help
+ Say 'Y' here if you want your kernel to support boards based
+ on the Marvell Armada 1500 SoC with device tree.
+
config MACH_ARMADA_XP
bool "Marvell Armada XP boards"
select ARMADA_XP_CLK
diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
index 2d04f0e..2e10b4a 100644
--- a/arch/arm/mach-mvebu/Makefile
+++ b/arch/arm/mach-mvebu/Makefile
@@ -1,10 +1,11 @@
ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include \
-I$(srctree)/arch/arm/plat-orion/include
-AFLAGS_coherency_ll.o := -Wa,-march=armv7-a
+AFLAGS_coherency_ll.o := -Wa,-march=armv7-a
-obj-y += system-controller.o
-obj-$(CONFIG_MACH_ARMADA_370_XP) += armada-370-xp.o
-obj-$(CONFIG_ARCH_MVEBU) += coherency.o coherency_ll.o pmsu.o
-obj-$(CONFIG_SMP) += platsmp.o headsmp.o
-obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
+obj-y += system-controller.o
+obj-$(CONFIG_MACH_ARMADA_370_XP) += armada-370-xp.o
+obj-$(CONFIG_MACH_ARMADA_1500) += armada-1500.o
+obj-$(CONFIG_ARCH_MVEBU) += coherency.o coherency_ll.o pmsu.o
+obj-$(CONFIG_SMP) += platsmp.o headsmp.o
+obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
diff --git a/arch/arm/mach-mvebu/armada-1500.c b/arch/arm/mach-mvebu/armada-1500.c
new file mode 100644
index 0000000..b7c556b
--- /dev/null
+++ b/arch/arm/mach-mvebu/armada-1500.c
@@ -0,0 +1,63 @@
+/*
+ * Device Tree support for Armada 1500 platforms.
+ *
+ * Sebastian Hesselbarth <sebastian.hesselbarth@...il.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 <linux/clk-provider.h>
+#include <linux/clocksource.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/of_platform.h>
+#include <asm/hardware/cache-l2x0.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+#include "common.h"
+#include "coherency.h"
+
+#define ARMADA_1500_REG_BASE_VIRT 0xf6000000
+#define ARMADA_1500_REG_BASE_SIZE 0x03000000
+
+static struct map_desc armada_1500_io_desc[] __initdata = {
+ {
+ .virtual = ARMADA_1500_REG_BASE_VIRT,
+ .pfn = __phys_to_pfn(ARMADA_1500_REG_BASE_VIRT),
+ .length = ARMADA_1500_REG_BASE_SIZE,
+ .type = MT_DEVICE,
+ },
+};
+
+static void __init armada_1500_map_io(void)
+{
+ iotable_init(armada_1500_io_desc, ARRAY_SIZE(armada_1500_io_desc));
+}
+
+static void __init armada_1500_timer_and_clk_init(void)
+{
+ of_clk_init(NULL);
+ clocksource_of_init();
+}
+
+static void __init armada_1500_dt_init(void)
+{
+ l2x0_of_init(0x70c00000, 0xfeffffff);
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+}
+
+static const char * const armada_1500_dt_compat[] = {
+ "marvell,armada-1500",
+ NULL,
+};
+
+DT_MACHINE_START(ARMADA_1500_DT, "Marvell Armada 1500")
+ .init_machine = armada_1500_dt_init,
+ .map_io = armada_1500_map_io,
+ .init_time = armada_1500_timer_and_clk_init,
+ .dt_compat = armada_1500_dt_compat,
+MACHINE_END
--
1.7.10.4
--
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