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authorSantosh Shilimkar <santosh.shilimkar@ti.com>2013-02-25 14:12:58 +0530
committerSantosh Shilimkar <santosh.shilimkar@ti.com>2013-03-28 12:56:00 +0530
commitfd1c07861491abf5e0e9ca06799bb5c48f99b64d (patch)
tree36cfa3a1ca89b5fcf02c6cd009b3da900a2d97f0
parentd5336a5a0b4602b38c48d76e46269bf1f357d492 (diff)
downloadlinaro-lsk-fd1c07861491abf5e0e9ca06799bb5c48f99b64d.tar.gz
ARM: OMAP4: Fix the init code to have OMAP4460 errata available in DT build
OMAP4460 ROM code bug needs the GIC distributor and local timer bases to be available for the bug work around. In current code, dt case these bases are not initialized leading to failure of the errata work-around. Fix it by extracting the bases from dt blob and populating them. Reported-by: Sourav Poddar <sourav.poddar@ti.com> Tested-by: Sourav Poddar <sourav.poddar@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
-rw-r--r--arch/arm/mach-omap2/omap4-common.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c
index 708bb115a27..20bf3c754bf 100644
--- a/arch/arm/mach-omap2/omap4-common.c
+++ b/arch/arm/mach-omap2/omap4-common.c
@@ -22,6 +22,7 @@
#include <linux/of_platform.h>
#include <linux/export.h>
#include <linux/irqchip/arm-gic.h>
+#include <linux/of_address.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/mach/map.h>
@@ -258,6 +259,21 @@ omap_early_initcall(omap4_sar_ram_init);
void __init omap_gic_of_init(void)
{
+ struct device_node *np;
+
+ /* Extract GIC distributor and TWD bases for OMAP4460 ROM Errata WA */
+ if (!cpu_is_omap446x())
+ goto skip_errata_init;
+
+ np = of_find_compatible_node(NULL, NULL, "arm,cortex-a9-gic");
+ gic_dist_base_addr = of_iomap(np, 0);
+ WARN_ON(!gic_dist_base_addr);
+
+ np = of_find_compatible_node(NULL, NULL, "arm,cortex-a9-twd-timer");
+ twd_base = of_iomap(np, 0);
+ WARN_ON(!twd_base);
+
+skip_errata_init:
omap_wakeupgen_init();
irqchip_init();
}