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mtd: cfi_cmdset_0002: add support for Samsung K8D6x16UxM NOR chips

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These chips report CFI v0.0 [1], so extend cfi_fixup_major_minor()
to patch all Samsung chips from 0.0 to 1.0.
Discussed and tested by the OpenWRT people [2].

[1] http://www.samsung.com/global/system/business/semiconductor/product/2007/6/11/NORFlash/64Mbit/K8D6316UTM/ds_K8D6x16UxM_rev16.pdf
[2] https://dev.openwrt.org/ticket/7348

Signed-off-by: Guillaume LECERF <glecerf@gmail.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Guillaume LECERF 2010-12-17 10:59:41 +01:00 committed by David Woodhouse
parent eaca491f75
commit e637276370
1 changed files with 13 additions and 3 deletions
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16
drivers/mtd/chips/cfi_cmdset_0002.c
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@ -392,9 +392,19 @@ static struct cfi_fixup fixup_table[] = {
static void cfi_fixup_major_minor(struct cfi_private *cfi,
struct cfi_pri_amdstd *extp)
{
if (cfi->mfr == CFI_MFR_SAMSUNG && cfi->id == 0x257e &&
extp->MajorVersion == '0')
extp->MajorVersion = '1';
if (cfi->mfr == CFI_MFR_SAMSUNG) {
if (extp->MajorVersion == '0' && extp->MinorVersion == '0') {
/*
* Samsung K8P2815UQB and K8D6x16UxM chips
* report major=0 / minor=0.
*/
printk(KERN_NOTICE " Fixing Samsung's Amd/Fujitsu"
" Extended Query version to 1.%c\n",
extp->MinorVersion);
extp->MajorVersion = '1';
}
}
/*
* SST 38VF640x chips report major=0xFF / minor=0xFF.
*/