diff options
| author |   Roger Quadros <rogerq@ti.com> | 2014-08-25 16:15:33 -0700 |
|---|---|---|
| committer |   Tony Lindgren <tony@atomide.com> | 2014-08-25 16:15:33 -0700 |
| commit | a3e83f05fbbf6c4994c658521a750bbd68bdf7a6 (patch) | |
| tree | d2166d47b481f14434dbb8d9f9ab4c1b464ea616 /arch/arm/mach-omap2 | |
| parent | mtd: nand: omap: Revert to using software ECC by default (diff) | |
| download | linux-dev-a3e83f05fbbf6c4994c658521a750bbd68bdf7a6.tar.xz linux-dev-a3e83f05fbbf6c4994c658521a750bbd68bdf7a6.zip | |
ARM: OMAP2+: GPMC: Support Software ECC scheme via DT
For v3.14 and prior, 1-bit Hamming code ECC via software was the
default choice for some boards e.g. 3430sdp.
Commit ac65caf514ec in v3.15 changed the behaviour
to use 1-bit Hamming code via Hardware using a different ECC layout
i.e. (ROM code layout) than what is used by software ECC.
This ECC layout change causes NAND filesystems created in v3.14
and prior to be unusable in v3.15 and later. So don't mark "sw" scheme
as deperecated and support it.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2')
| -rw-r--r-- | arch/arm/mach-omap2/gpmc.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c index 8bc13380f0a0..9f42d5437fcc 100644 --- a/arch/arm/mach-omap2/gpmc.c +++ b/arch/arm/mach-omap2/gpmc.c @@ -1403,8 +1403,11 @@ static int gpmc_probe_nand_child(struct platform_device *pdev, pr_err("%s: ti,nand-ecc-opt not found\n", __func__); return -ENODEV; } - if (!strcmp(s, "ham1") || !strcmp(s, "sw") || - !strcmp(s, "hw") || !strcmp(s, "hw-romcode")) + + if (!strcmp(s, "sw")) + gpmc_nand_data->ecc_opt = OMAP_ECC_HAM1_CODE_SW; + else if (!strcmp(s, "ham1") || + !strcmp(s, "hw") || !strcmp(s, "hw-romcode")) gpmc_nand_data->ecc_opt = OMAP_ECC_HAM1_CODE_HW; else if (!strcmp(s, "bch4")) |