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authorLinus Torvalds <torvalds@linux-foundation.org>2014-04-05 14:19:54 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-05 14:19:54 -0700
commitff050ad12c551233e546506409c89eb2f640d9f3 (patch)
tree8ae29fece122a91cbd6160fb2ca34c0ea82c3df9 /arch/arm/mach-mvebu/board-v7.c
parentdfc25e4503aef6b82a1de4a0fbe19aafa8648fbe (diff)
parent9233087dc468f75bdeb7830c694c09dc74be88c4 (diff)
Merge tag 'soc-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC specific changes from Arnd Bergmann: "Lots of changes specific to one of the SoC families. Some that stick out are: - mach-qcom gains new features, most importantly SMP support for the newer chips (Stephen Boyd, Rohit Vaswani) - mvebu gains support for three new SoCs: Armada 375, 380 and 385 (Thomas Petazzoni and Free-electrons team) - SMP support for Rockchips (Heiko Stübner) - Lots of i.MX changes (Shawn Guo) - Added support for BCM5301x SoC (Hauke Mehrtens) - Multiplatform support for Marvell Kirkwood and Dove (Andrew Lunn and Sebastian Hesselbarth doing the final part of a long journey) - Unify davinci platforms and remove obsolete ones (Sekhar Nori, Arnd Bergmann)" * tag 'soc-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (126 commits) ARM: sunxi: Select HAVE_ARM_ARCH_TIMER ARM: cache-tauros2: remove ARMv6 code ARM: mvebu: don't select CONFIG_NEON ARM: davinci: fix DT booting with default defconfig ARM: configs: bcm_defconfig: enable bcm590xx regulator support ARM: davinci: remove tnetv107x support MAINTAINERS: Update ARM STi maintainers ARM: restrict BCM_KONA_UART to ARCH_BCM_MOBILE ARM: bcm21664: Add board support. ARM: sunxi: Add the new watchog compatibles to the reboot code ARM: enable ARM_HAS_SG_CHAIN for multiplatform ARM: davinci: remove da8xx_omapl_defconfig ARM: davinci: da8xx: fix multiple watchdog device registration ARM: davinci: add da8xx specific configs to davinci_all_defconfig ARM: davinci: enable da8xx build concurrently with older devices ARM: BCM5301X: workaround suppress fault ARM: BCM5301X: add early debugging support ARM: BCM5301X: initial support for the BCM5301X/BCM470X SoCs with ARM CPU ARM: mach-bcm: Remove GENERIC_TIME ARM: shmobile: APMU: Fix warnings due to improper printk formats ...
Diffstat (limited to 'arch/arm/mach-mvebu/board-v7.c')
-rw-r--r--arch/arm/mach-mvebu/board-v7.c140
1 files changed, 140 insertions, 0 deletions
diff --git a/arch/arm/mach-mvebu/board-v7.c b/arch/arm/mach-mvebu/board-v7.c
new file mode 100644
index 000000000000..333fca8fdc41
--- /dev/null
+++ b/arch/arm/mach-mvebu/board-v7.c
@@ -0,0 +1,140 @@
+/*
+ * Device Tree support for Armada 370 and XP platforms.
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Lior Amsalem <alior@marvell.com>
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Thomas Petazzoni <thomas.petazzoni@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 <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/clk-provider.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/io.h>
+#include <linux/clocksource.h>
+#include <linux/dma-mapping.h>
+#include <linux/mbus.h>
+#include <linux/signal.h>
+#include <linux/slab.h>
+#include <asm/hardware/cache-l2x0.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+#include "armada-370-xp.h"
+#include "common.h"
+#include "coherency.h"
+#include "mvebu-soc-id.h"
+
+/*
+ * Early versions of Armada 375 SoC have a bug where the BootROM
+ * leaves an external data abort pending. The kernel is hit by this
+ * data abort as soon as it enters userspace, because it unmasks the
+ * data aborts at this moment. We register a custom abort handler
+ * below to ignore the first data abort to work around this
+ * problem.
+ */
+static int armada_375_external_abort_wa(unsigned long addr, unsigned int fsr,
+ struct pt_regs *regs)
+{
+ static int ignore_first;
+
+ if (!ignore_first && fsr == 0x1406) {
+ ignore_first = 1;
+ return 0;
+ }
+
+ return 1;
+}
+
+static void __init mvebu_timer_and_clk_init(void)
+{
+ of_clk_init(NULL);
+ clocksource_of_init();
+ coherency_init();
+ BUG_ON(mvebu_mbus_dt_init());
+#ifdef CONFIG_CACHE_L2X0
+ l2x0_of_init(0, ~0UL);
+#endif
+
+ if (of_machine_is_compatible("marvell,armada375"))
+ hook_fault_code(16 + 6, armada_375_external_abort_wa, SIGBUS, 0,
+ "imprecise external abort");
+}
+
+static void __init i2c_quirk(void)
+{
+ struct device_node *np;
+ u32 dev, rev;
+
+ /*
+ * Only revisons more recent than A0 support the offload
+ * mechanism. We can exit only if we are sure that we can
+ * get the SoC revision and it is more recent than A0.
+ */
+ if (mvebu_get_soc_id(&rev, &dev) == 0 && dev > MV78XX0_A0_REV)
+ return;
+
+ for_each_compatible_node(np, NULL, "marvell,mv78230-i2c") {
+ struct property *new_compat;
+
+ new_compat = kzalloc(sizeof(*new_compat), GFP_KERNEL);
+
+ new_compat->name = kstrdup("compatible", GFP_KERNEL);
+ new_compat->length = sizeof("marvell,mv78230-a0-i2c");
+ new_compat->value = kstrdup("marvell,mv78230-a0-i2c",
+ GFP_KERNEL);
+
+ of_update_property(np, new_compat);
+ }
+ return;
+}
+
+static void __init mvebu_dt_init(void)
+{
+ if (of_machine_is_compatible("plathome,openblocks-ax3-4"))
+ i2c_quirk();
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+}
+
+static const char * const armada_370_xp_dt_compat[] = {
+ "marvell,armada-370-xp",
+ NULL,
+};
+
+DT_MACHINE_START(ARMADA_370_XP_DT, "Marvell Armada 370/XP (Device Tree)")
+ .smp = smp_ops(armada_xp_smp_ops),
+ .init_machine = mvebu_dt_init,
+ .init_time = mvebu_timer_and_clk_init,
+ .restart = mvebu_restart,
+ .dt_compat = armada_370_xp_dt_compat,
+MACHINE_END
+
+static const char * const armada_375_dt_compat[] = {
+ "marvell,armada375",
+ NULL,
+};
+
+DT_MACHINE_START(ARMADA_375_DT, "Marvell Armada 375 (Device Tree)")
+ .init_time = mvebu_timer_and_clk_init,
+ .restart = mvebu_restart,
+ .dt_compat = armada_375_dt_compat,
+MACHINE_END
+
+static const char * const armada_38x_dt_compat[] = {
+ "marvell,armada380",
+ "marvell,armada385",
+ NULL,
+};
+
+DT_MACHINE_START(ARMADA_38X_DT, "Marvell Armada 380/385 (Device Tree)")
+ .init_time = mvebu_timer_and_clk_init,
+ .restart = mvebu_restart,
+ .dt_compat = armada_38x_dt_compat,
+MACHINE_END