* Gupta, Pekon <pekon@xxxxxx> [140713 22:43]: > >From: Christoph Fritz [mailto:chf.fritz@xxxxxxxxxxxxxx] > > > >This patch adds bch8 ecc software fallback which is mostly used by > >omap3s because they lack hardware elm support. > > > >Fixes: 0611c41934ab35ce84dea34ab291897ad3cbc7be (ARM: OMAP2+: gpmc: > >update gpmc_hwecc_bch_capable() for new platforms and ECC schemes) > >Cc: <stable@xxxxxxxxxxxxxxx> # 3.15.x+ > >Signed-off-by: Christoph Fritz <chf.fritz@xxxxxxxxxxxxxx> > >--- > > arch/arm/mach-omap2/gpmc-nand.c | 18 ++++++++++-------- > > 1 file changed, 10 insertions(+), 8 deletions(-) > > > >diff --git a/arch/arm/mach-omap2/gpmc-nand.c b/arch/arm/mach-omap2/gpmc-nand.c > >index 17cd393..93914d2 100644 > >--- a/arch/arm/mach-omap2/gpmc-nand.c > >+++ b/arch/arm/mach-omap2/gpmc-nand.c > >@@ -50,6 +50,16 @@ static bool gpmc_hwecc_bch_capable(enum omap_ecc ecc_opt) > > soc_is_omap54xx() || soc_is_dra7xx()) > > return 1; > > > >+ if (ecc_opt == OMAP_ECC_BCH4_CODE_HW_DETECTION_SW || > >+ ecc_opt == OMAP_ECC_BCH8_CODE_HW_DETECTION_SW) { > >+ if (cpu_is_omap24xx()) > >+ return 0; > >+ else if (cpu_is_omap3630() && (GET_OMAP_REVISION() == 0)) > >+ return 0; > >+ else > >+ return 1; > >+ } > >+ > > /* OMAP3xxx do not have ELM engine, so cannot support ECC schemes > > * which require H/W based ECC error detection */ > > if ((cpu_is_omap34xx() || cpu_is_omap3630()) && > >@@ -57,14 +67,6 @@ static bool gpmc_hwecc_bch_capable(enum omap_ecc ecc_opt) > > (ecc_opt == OMAP_ECC_BCH8_CODE_HW))) > > return 0; > > > >- /* > >- * For now, assume 4-bit mode is only supported on OMAP3630 ES1.x, x>=1 > >- * and AM33xx derivates. Other chips may be added if confirmed to work. > >- */ > >- if ((ecc_opt == OMAP_ECC_BCH4_CODE_HW_DETECTION_SW) && > >- (!cpu_is_omap3630() || (GET_OMAP_REVISION() == 0))) > >- return 0; > >- > > /* legacy platforms support only HAM1 (1-bit Hamming) ECC scheme */ > > if (ecc_opt == OMAP_ECC_HAM1_CODE_HW) > > return 1; > >-- > >1.7.10.4 > > > Thanks much for this fix. > Reviewed-by: Pekon Gupta <pekon@xxxxxx> Applying into omap-for-v3.16/fixes thanks. Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
