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openwrt-owl/target/linux/lantiq/patches-3.7/0305-no_xip_nor.patch

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fixes NO_XIP on CFI0001 flash This patch disables the execute-in-place (XIP) support for flash on lantiq. This has to be disabled since the bus which flash is connected to does not support unaligned accesses. Resolves data bus errors on Lantiq routers with Intel command set flash. Signed-off-by: Matti Laakso <malaakso@elisanet.fi> SVN-Revision: 35992
2013-03-12 13:53:08 +00:00
Index: linux-3.7.10/drivers/mtd/maps/lantiq-flash.c
===================================================================
--- linux-3.7.10.orig/drivers/mtd/maps/lantiq-flash.c 2013-02-27 18:22:04.000000000 +0100
+++ linux-3.7.10/drivers/mtd/maps/lantiq-flash.c 2013-03-12 10:10:22.954382685 +0100
@@ -134,7 +134,11 @@
}
ltq_mtd->map = kzalloc(sizeof(struct map_info), GFP_KERNEL);
- ltq_mtd->map->phys = ltq_mtd->res->start;
+ if (of_find_property(pdev->dev.of_node, "lantiq,noxip", NULL))
+ ltq_mtd->map->phys = NO_XIP;
+ else
+ ltq_mtd->map->phys = ltq_mtd->res->start;
+ ltq_mtd->res->start;
ltq_mtd->map->size = resource_size(ltq_mtd->res);
ltq_mtd->map->virt = devm_request_and_ioremap(&pdev->dev, ltq_mtd->res);
if (!ltq_mtd->map->virt) {