This patch fixes lpae on exynos5 arm processors. LPAE is needed for
virt on arm processors.
--- arch/arm/mach-exynos/mach-exynos5-dt.c 2013-09-02 16:46:10.000000000 -0400
+++ arch/arm/mach-exynos/mach-exynos5-dt.c 2013-10-23 10:35:37.891255087 -0400
@@ -14,7 +14,7 @@
#include <linux/memblock.h>
#include <linux/io.h>
#include <linux/clocksource.h>
-
+#include <linux/dma-mapping.h>
#include <asm/mach/arch.h>
#include <mach/regs-pmu.h>
@@ -23,6 +23,26 @@
#include "common.h"
+static u64 dma_mask64 = DMA_BIT_MASK(64);
+
+static int exynos5250_platform_notifier(struct notifier_block *nb,
+ unsigned long event, void *__dev)
+{
+ struct device *dev = __dev;
+
+ if (event != BUS_NOTIFY_ADD_DEVICE)
+ return NOTIFY_DONE;
+
+ dev->dma_mask = &dma_mask64;
+ dev->coherent_dma_mask = DMA_BIT_MASK(64);
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block exynos5250_platform_nb = {
+ .notifier_call = exynos5250_platform_notifier,
+};
+
static void __init exynos5_dt_machine_init(void)
{
struct device_node *i2c_np;
@@ -46,6 +66,9 @@
}
}
}
+
+ if (of_machine_is_compatible("samsung,exynos5250"))
+ bus_register_notifier(&platform_bus_type, &exynos5250_platform_nb);
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
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