diff options
Diffstat (limited to 'target/linux/generic/patches-3.10/470-mtd-m25p80-add-pm25-flash-support.patch')
| -rw-r--r-- | target/linux/generic/patches-3.10/470-mtd-m25p80-add-pm25-flash-support.patch | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/target/linux/generic/patches-3.10/470-mtd-m25p80-add-pm25-flash-support.patch b/target/linux/generic/patches-3.10/470-mtd-m25p80-add-pm25-flash-support.patch deleted file mode 100644 index 7e62e28..0000000 --- a/target/linux/generic/patches-3.10/470-mtd-m25p80-add-pm25-flash-support.patch +++ /dev/null @@ -1,78 +0,0 @@ -From dbca80cf6b3c0d0f130cdfb4b1f19f2092f62174 Mon Sep 17 00:00:00 2001 -From: Michel Stempin <michel.stempin@wanadoo.fr> -Date: Sun, 18 Aug 2013 00:50:26 +0200 -Subject: [PATCH v2] mtd: m25p80: add support for PMC SPI flash - -This patch adds support for PMC (now Chingis, part of ISSI) Pm25LV512 (512 -kBbit), Pm25LV010 (1 Mbit) and Pm25LQ032 (32 Mbit) SPI flash. - -Two generations of PMC SPI flash chips are addressed: - -1) Pm25LV512 and Pm25LV010 - These have 4KB sectors and 32KB blocks. The 4KB -sector erase uses a non-standard opcode (0xd7). They do not support JEDEC RDID -(0x9f), and so they can only be detected by matching their name string with -pre-configured platform data. Because of the cascaded acquisitions, the -datasheet is no longer available on the current manufacturer's website, -although it is still commonly used in some recent wireless routers [1]. Only -public datasheet available seems to be on GeoCities [2]. - -2) Pm25LQ032 - A newer generation flash, with 4KB sectors and 32KB blocks. It -uses the standard erase and JEDEC read-ID opcodes. Manufacturer's datasheet is -available [3]. - -[1] https://forum.openwrt.org/viewtopic.php?pid=186360#p186360 -[2] http://www.geocities.jp/scottle556/pdf/Pm25LV512-010.pdf -[3] http://www.chingistek.com/img/Product_Files/Pm25LQ032C%20datasheet%20v1.6.1.pdf - -Signed-off-by: Gabor Juhos <juhosg@openwrt.org> -Signed-off-by: Michel Stempin <michel.stempin@wanadoo.fr> -CC: Brian Norris <computersforpeace@gmail.com> -CC: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> ---- - -Changes in v2: - - style and documentation improvements - - drivers/mtd/devices/m25p80.c | 10 ++++++++++ - 1 file changed, 10 insertions(+) - ---- 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 */ - -@@ -682,6 +683,7 @@ struct flash_info { - #define SECT_4K 0x01 /* OPCODE_BE_4K works uniformly */ - #define M25P_NO_ERASE 0x02 /* No erase command needed */ - #define SST_WRITE 0x04 /* use SST byte programming */ -+#define SECT_4K_PMC 0x08 /* OPCODE_BE_4K_PMC works uniformly */ - }; - - #define INFO(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags) \ -@@ -765,6 +767,11 @@ 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) }, -+ { "pm25lq032", INFO(0x7F9D46, 0, 64 * 1024, 64, SECT_4K) }, -+ - /* Spansion -- single (large) sector size only, at least - * for the chips listed here (without boot sectors). - */ -@@ -1017,6 +1024,9 @@ 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; |