From: yassin yassinjaffer@gmail.com
Signed-off-by: Roy Spliet r.spliet@ultimaker.com --- include/linux/mtd/nand.h | 49 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+)
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index bc927ec..b026110 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -1008,6 +1008,55 @@ static inline int jedec_feature(struct nand_chip *chip) : 0; }
+/** + * struct nand_sdr_timings - SDR NAND chip timings + * + * This struct defines the timing requirements of a SDR NAND chip. + * These informations can be found in every NAND datasheets and the timings + * meaning are described in the ONFI specifications: + * www.onfi.org/~/media/ONFI/specs/onfi_3_1_spec.pdf (chapter 4.15 Timing + * Parameters) + * + * All these timings are expressed in picoseconds. + */ + +struct nand_sdr_timings { + u32 tALH_min; + u32 tADL_min; + u32 tALS_min; + u32 tAR_min; + u32 tCEA_max; + u32 tCEH_min; + u32 tCH_min; + u32 tCHZ_max; + u32 tCLH_min; + u32 tCLR_min; + u32 tCLS_min; + u32 tCOH_min; + u32 tCS_min; + u32 tDH_min; + u32 tDS_min; + u32 tFEAT_max; + u32 tIR_min; + u32 tITC_max; + u32 tRC_min; + u32 tREA_max; + u32 tREH_min; + u32 tRHOH_min; + u32 tRHW_min; + u32 tRHZ_max; + u32 tRLOH_min; + u32 tRP_min; + u32 tRR_min; + u64 tRST_max; + u32 tWB_max; + u32 tWC_min; + u32 tWH_min; + u32 tWHR_min; + u32 tWP_min; + u32 tWW_min; +}; + #ifdef __UBOOT__ /* Standard NAND functions from nand_base.c */ void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len);