diff options
| author | florian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2013-03-14 14:45:56 +0000 |
|---|---|---|
| committer | florian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2013-03-14 14:45:56 +0000 |
| commit | 05ea13b746e715f03c70e29068b650a62e5e5d79 (patch) | |
| tree | 08d6be7813310be182259388518215a17afcc18c /target/linux/generic/patches-3.9/470-mtd_m25p80_add_pm25lv_flash_support.patch | |
| parent | 54d0b82f17bde2e67b8a2b58c1cb3e9ba294e9b7 (diff) | |
kernel: add support for 3.9-rc2
Signed-off-by: Florian Fainelli <florian@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36008 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/generic/patches-3.9/470-mtd_m25p80_add_pm25lv_flash_support.patch')
| -rw-r--r-- | target/linux/generic/patches-3.9/470-mtd_m25p80_add_pm25lv_flash_support.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.9/470-mtd_m25p80_add_pm25lv_flash_support.patch b/target/linux/generic/patches-3.9/470-mtd_m25p80_add_pm25lv_flash_support.patch new file mode 100644 index 000000000..8416e5dc9 --- /dev/null +++ b/target/linux/generic/patches-3.9/470-mtd_m25p80_add_pm25lv_flash_support.patch @@ -0,0 +1,39 @@ +--- a/drivers/mtd/devices/m25p80.c ++++ b/drivers/mtd/devices/m25p80.c +@@ -45,6 +45,7 @@ + #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 */ + +@@ -681,6 +682,7 @@ 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) \ +@@ -763,6 +765,10 @@ static const struct spi_device_id m25p_i + { "n25q128a13", INFO(0x20ba18, 0, 64 * 1024, 256, 0) }, + { "n25q256a", INFO(0x20ba19, 0, 64 * 1024, 512, SECT_4K) }, + ++ /* PMC -- pm25x "blocks" are 32K, sectors are 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). + */ +@@ -1013,6 +1019,9 @@ static int m25p_probe(struct spi_device + 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; |