diff options
Diffstat (limited to 'target/linux/generic/patches-3.10/003-12-001-mtd-chips-Add-support-for-PMC-SPI-Flash-chips-in-m25.patch')
| -rw-r--r-- | target/linux/generic/patches-3.10/003-12-001-mtd-chips-Add-support-for-PMC-SPI-Flash-chips-in-m25.patch | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/target/linux/generic/patches-3.10/003-12-001-mtd-chips-Add-support-for-PMC-SPI-Flash-chips-in-m25.patch b/target/linux/generic/patches-3.10/003-12-001-mtd-chips-Add-support-for-PMC-SPI-Flash-chips-in-m25.patch deleted file mode 100644 index 8902acb..0000000 --- a/target/linux/generic/patches-3.10/003-12-001-mtd-chips-Add-support-for-PMC-SPI-Flash-chips-in-m25.patch +++ /dev/null @@ -1,94 +0,0 @@ -From 6c3b88970175e18a67eb8e55c4eba10614d0d5dc Mon Sep 17 00:00:00 2001 -From: Michel Stempin <michel.stempin@wanadoo.fr> -Date: Mon, 15 Jul 2013 12:13:56 +0200 -Subject: [PATCH] mtd: chips: Add support for PMC SPI Flash chips in m25p80.c - -commit 6c3b88970175e18a67eb8e55c4eba10614d0d5dc upstream. - -Add support for PMC (now Chingis, part of ISSI) Pm25LV512 (512 Kib), -Pm25LV010 (1 Mib) and Pm25LQ032 (32 Mib) SPI Flash chips. - -This patch addresses two generations of PMC SPI Flash chips: - - - Pm25LV512 and Pm25LV010: these have 4KiB sectors and 32KiB - blocks. The 4KiB 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 - (<https://forum.openwrt.org/viewtopic.php?pid=186360#p186360>). The - only public datasheet available seems to be on GeoCities: - <http://www.geocities.jp/scottle556/pdf/Pm25LV512-010.pdf> - - - Pm25LQ032: a newer generation flash, with 4KiB sectors and 64KiB - blocks. It uses the standard erase and JEDEC read-ID - opcodes. Manufacturer's datasheet is here: - <http://www.chingistek.com/img/Product_Files/Pm25LQ032C%20datasheet%20v1.6.1.pdf> - -This patch is resent in order to take into account both Brian Norris -remarks and this upstream patch: - -commit e534ee4f9ca29fdb38eea4b0c53f2154fbd8c1ee -Author: Krzysztof Mazur <krzysiek@podlesie.net> -Date: Fri Feb 22 15:51:05 2013 +0100 - - mtd: m25p80: introduce SST_WRITE flag for SST byte programming - - Not all SST devices implement the SST byte programming command. - Some devices (like SST25VF064C) implement only standard m25p80 page - write command. - - Now SPI flash devices that need sst_write() are explicitly marked - with new SST_WRITE flag and the decision to use sst_write() is based - on this flag instead of manufacturer id. - -Signed-off-by: Gabor Juhos <juhosg@openwrt.org> -Signed-off-by: Michel Stempin <michel.stempin@wanadoo.fr> -[Brian: fixed conflict] -Signed-off-by: Brian Norris <computersforpeace@gmail.com> -Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> ---- - drivers/mtd/devices/m25p80.c | 10 ++++++++++ - 1 file changed, 10 insertions(+) - ---- a/drivers/mtd/devices/m25p80.c -+++ b/drivers/mtd/devices/m25p80.c -@@ -43,6 +43,7 @@ - #define OPCODE_FAST_READ 0x0b /* Read data bytes (high frequency) */ - #define OPCODE_PP 0x02 /* Page program (up to 256 bytes) */ - #define OPCODE_BE_4K 0x20 /* Erase 4KiB block */ -+#define OPCODE_BE_4K_PMC 0xd7 /* Erase 4KiB block on PMC chips */ - #define OPCODE_BE_32K 0x52 /* Erase 32KiB block */ - #define OPCODE_CHIP_ERASE 0xc7 /* Erase whole flash chip */ - #define OPCODE_SE 0xd8 /* Sector erase (usually 64KiB) */ -@@ -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 0x10 /* OPCODE_BE_4K_PMC works uniformly */ - }; - - #define INFO(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags) \ -@@ -762,6 +764,11 @@ 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 */ -+ { "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). - */ -@@ -1014,6 +1021,9 @@ 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; |