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| author | Gabor Juhos <juhosg@openwrt.org> | 2010-08-31 20:06:38 +0000 |
|---|---|---|
| committer | Gabor Juhos <juhosg@openwrt.org> | 2010-08-31 20:06:38 +0000 |
| commit | 53b3a757118dcb188a0f57e68b05b164451c63cd (patch) | |
| tree | 10235f66f9a83369a447831e5f057a99692571a1 /target/linux/generic/patches-2.6.36/084-mtd_m25p80_add_pm25lv_flash_support.patch | |
| parent | e447632dca7f231166c69ab04e6274f637b751f8 (diff) | |
| download | upstream-53b3a757118dcb188a0f57e68b05b164451c63cd.tar.gz upstream-53b3a757118dcb188a0f57e68b05b164451c63cd.tar.bz2 upstream-53b3a757118dcb188a0f57e68b05b164451c63cd.zip | |
generic: fix erase operation on the pm25lv flash chip
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22861 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/generic/patches-2.6.36/084-mtd_m25p80_add_pm25lv_flash_support.patch')
| -rw-r--r-- | target/linux/generic/patches-2.6.36/084-mtd_m25p80_add_pm25lv_flash_support.patch | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/target/linux/generic/patches-2.6.36/084-mtd_m25p80_add_pm25lv_flash_support.patch b/target/linux/generic/patches-2.6.36/084-mtd_m25p80_add_pm25lv_flash_support.patch index 96a5bd0132..e37bab77e8 100644 --- a/target/linux/generic/patches-2.6.36/084-mtd_m25p80_add_pm25lv_flash_support.patch +++ b/target/linux/generic/patches-2.6.36/084-mtd_m25p80_add_pm25lv_flash_support.patch @@ -1,13 +1,39 @@ --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c -@@ -646,6 +646,10 @@ static const struct spi_device_id m25p_i +@@ -43,6 +43,7 @@ + #define OPCODE_BE_4K 0x20 /* Erase 4KiB block */ + #define OPCODE_BE_32K 0x52 /* Erase 32KiB block */ + #define OPCODE_CHIP_ERASE 0xc7 /* Erase whole flash chip */ ++#define OPCODE_BE_4K_PMC 0xd7 /* Erase 4KiB block on PMC chips*/ + #define OPCODE_SE 0xd8 /* Sector erase (usually 64KiB) */ + #define OPCODE_RDID 0x9f /* Read JEDEC ID */ + +@@ -598,6 +599,7 @@ struct flash_info { + u16 flags; + #define SECT_4K 0x01 /* OPCODE_BE_4K works uniformly */ + #define M25P_NO_ERASE 0x02 /* No erase command needed */ ++#define SECT_4K_PMC 0x04 /* OPCODE_BE_4K_PMC works uniformly */ + }; + + #define INFO(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags) \ +@@ -654,6 +656,10 @@ static const struct spi_device_id m25p_i { "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) }, { "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) }, + /* PMC -- pm25x "blocks" are 32K, sectors are 4K */ -+ { "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K) }, -+ { "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K) }, ++ { "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K_PMC) }, ++ { "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K_PMC) }, + /* Spansion -- single (large) sector size only, at least * for the chips listed here (without boot sectors). */ +@@ -869,6 +875,9 @@ static int __devinit m25p_probe(struct s + if (info->flags & SECT_4K) { + flash->erase_opcode = OPCODE_BE_4K; + flash->mtd.erasesize = 4096; ++ } else if (info->flags & SECT_4K_PMC) { ++ flash->erase_opcode = OPCODE_BE_4K_PMC; ++ flash->mtd.erasesize = 4096; + } else { + flash->erase_opcode = OPCODE_SE; + flash->mtd.erasesize = info->sector_size; |