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mtd: physmap_of: allow to specify the mtd name for retro compatiblity 

linux,mtd-name allow to specify the mtd name for retro capability with
physmap-flash drivers as boot loader pass the mtd partition via the old
device name physmap-flash.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
This commit is contained in:
Jean-Christophe PLAGNIOL-VILLARD 2012-11-07 16:32:16 +01:00 committed by Artem Bityutskiy
parent d6ba745d0a
commit d68cbdd4fb
2 changed files with 7 additions and 1 deletions
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3
Documentation/devicetree/bindings/mtd/mtd-physmap.txt
View File

@ -23,6 +23,9 @@ file systems on embedded devices.
unaligned accesses as implemented in the JFFS2 code via memcpy().
By defining "no-unaligned-direct-access", the flash will not be
exposed directly to the MTD users (e.g. JFFS2) any more.
- linux,mtd-name: allow to specify the mtd name for retro capability with
physmap-flash drivers as boot loader pass the mtd partition via the old
device name physmap-flash.
For JEDEC compatible devices, the following additional properties
are defined:

5
drivers/mtd/maps/physmap_of.c
View File

@ -170,6 +170,7 @@ static int __devinit of_flash_probe(struct platform_device *dev)
resource_size_t res_size;
struct mtd_part_parser_data ppdata;
bool map_indirect;
const char *mtd_name;
match = of_match_device(of_flash_match, &dev->dev);
if (!match)
@ -178,6 +179,8 @@ static int __devinit of_flash_probe(struct platform_device *dev)
reg_tuple_size = (of_n_addr_cells(dp) + of_n_size_cells(dp)) * sizeof(u32);
of_property_read_string(dp, "linux,mtd-name", &mtd_name);
/*
* Get number of "reg" tuples. Scan for MTD devices on area's
* described by each "reg" region. This makes it possible (including
@ -234,7 +237,7 @@ static int __devinit of_flash_probe(struct platform_device *dev)
goto err_out;
}
info->list[i].map.name = dev_name(&dev->dev);
info->list[i].map.name = mtd_name ?: dev_name(&dev->dev);
info->list[i].map.phys = res.start;
info->list[i].map.size = res_size;
info->list[i].map.bankwidth = be32_to_cpup(width);