MTD: jedec_probe: Fix NEC uPD29F064115 detection.
PATCH 1/1 MTD: jedec_probe: Fix NEC uPD29F064115 detection.
linux v2.6.31-rc6 can not detect NEC uPD29F064115.
uPD29F064115 is a 16 bit device.
datasheet:
http://www.cn.necel.com/memory/cn/download/M16062EJ2V0DS00.pdf
A problem and fix is described as following commit, which in the main kernel tree, uPD29F064115 needs same fix.
commit ca6f12c67ed19718cf37d0f531af9438de85b70c
Author: Atsushi Nemoto <[email protected]> Date: Wed Jul 16 00:09:15 2008 +0900
[MTD] jedec_probe: Fix SST 16-bit chip detection
The unlock_addr rework in kernel 2.6.25 breaks 16-bit SST chips. SST 39LF160 and SST 39VF1601 are both 16-bit only chip (do not have BYTE# pin) and new uaddr value is not correct for them. Add MTD_UADDR_0xAAAA_0x5555 for those chips. Tested with SST 39VF1601 chip.
Signed-off-by Atsushi Nemoto <[email protected]>
Signed-off-by David Woodhouse <[email protected]>
Signed-off-by Hiroshi Ito <[email protected]>
--- drivers/mtd/chips/jedec_probe.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)
drivers/mtd/chips/jedec_probe.c +2 -2
@@ -1156,8 +1156,8 @@ static const struct amd_flash_info jedec_table[] = { .mfr_id = MANUFACTURER_NEC, .dev_id = UPD29F064115, .name = "NEC uPD29F064115", - .devtypes = CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8, - .uaddr = MTD_UADDR_0x0555_0x02AA, /* ???? */ + .devtypes = CFI_DEVICETYPE_X16, + .uaddr = MTD_UADDR_0xAAAA_0x5555, .dev_size = SIZE_8MiB, .cmd_set = P_ID_AMD_STD, .nr_regions = 3,
Signature · 7 lines
1.5.6.5 -------- Hiroshi Ito Media Lab. Inc., URL http://www.mlb.co.jp ( Sorry, Japanese only. ) TEL +81-3-5294-7255 FAX +81-3-5294-7256