[U-Boot] [RFC 01/11] mtd/nand: define struct nand_timings

[Roy Spliet]

From: yassin <yassinjaffer at gmail.com>

Signed-off-by: Roy Spliet <r.spliet at 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);
-- 
2.4.2


-- 


IMAGINE IT >> MAKE IT

Meet us online at Twitter <http://twitter.com/ultimaker>, Facebook 
<http://facebook.com/ultimaker>, Google+ <http://google.com/+Ultimaker>

www.ultimaker.com