From: b.brezillon.dev@gmail.com (Boris BREZILLON)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 2/9] mtd: nand: add ONFI timing mode to nand_timings converter
Date: Wed, 12 Mar 2014 19:07:37 +0100 [thread overview]
Message-ID: <1394647664-8258-3-git-send-email-b.brezillon.dev@gmail.com> (raw)
In-Reply-To: <1394647664-8258-1-git-send-email-b.brezillon.dev@gmail.com>
Add a converter to retrieve NAND timings from an ONFI NAND timing mode.
This only support SDR NAND timings for now.
Signed-off-by: Boris BREZILLON <b.brezillon.dev@gmail.com>
---
drivers/mtd/nand/Makefile | 2 +-
drivers/mtd/nand/nand_timings.c | 248 +++++++++++++++++++++++++++++++++++++++
include/linux/mtd/nand.h | 4 +
3 files changed, 253 insertions(+), 1 deletion(-)
create mode 100644 drivers/mtd/nand/nand_timings.c
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index c970ce7..0b8a822 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -2,7 +2,7 @@
# linux/drivers/nand/Makefile
#
-obj-$(CONFIG_MTD_NAND) += nand.o
+obj-$(CONFIG_MTD_NAND) += nand.o nand_timings.o
obj-$(CONFIG_MTD_NAND_ECC) += nand_ecc.o
obj-$(CONFIG_MTD_NAND_BCH) += nand_bch.o
obj-$(CONFIG_MTD_NAND_IDS) += nand_ids.o nand_hynix.o
diff --git a/drivers/mtd/nand/nand_timings.c b/drivers/mtd/nand/nand_timings.c
new file mode 100644
index 0000000..f66fe95
--- /dev/null
+++ b/drivers/mtd/nand/nand_timings.c
@@ -0,0 +1,248 @@
+/*
+ * Copyright (C) 2014 Boris BREZILLON <b.brezillon.dev@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+#include <linux/mtd/nand.h>
+
+static const struct nand_sdr_timings onfi_sdr_timings[] = {
+ /* Mode 0 */
+ {
+ .tADL_min = 200000,
+ .tALH_min = 20000,
+ .tALS_min = 50000,
+ .tAR_min = 25000,
+ .tCEA_max = 100000,
+ .tCEH_min = 20000,
+ .tCH_min = 20000,
+ .tCHZ_max = 100000,
+ .tCLH_min = 20000,
+ .tCLR_min = 20000,
+ .tCLS_min = 50000,
+ .tCOH_min = 0,
+ .tCS_min = 70000,
+ .tDH_min = 20000,
+ .tDS_min = 40000,
+ .tFEAT_max = 1000000,
+ .tIR_min = 10000,
+ .tITC_max = 1000000,
+ .tRC_min = 100000,
+ .tREA_max = 40000,
+ .tREH_min = 30000,
+ .tRHOH_min = 0,
+ .tRHW_min = 200000,
+ .tRHZ_max = 200000,
+ .tRLOH_min = 0,
+ .tRP_min = 50000,
+ .tRST_max = 250000000000,
+ .tWB_max = 200000,
+ .tRR_min = 40000,
+ .tWC_min = 100000,
+ .tWH_min = 30000,
+ .tWHR_min = 120000,
+ .tWP_min = 50000,
+ .tWW_min = 100000,
+ },
+ /* Mode 1 */
+ {
+ .tADL_min = 100000,
+ .tALH_min = 10000,
+ .tALS_min = 25000,
+ .tAR_min = 10000,
+ .tCEA_max = 45000,
+ .tCEH_min = 20000,
+ .tCH_min = 10000,
+ .tCHZ_max = 50000,
+ .tCLH_min = 10000,
+ .tCLR_min = 10000,
+ .tCLS_min = 25000,
+ .tCOH_min = 15000,
+ .tCS_min = 35000,
+ .tDH_min = 10000,
+ .tDS_min = 20000,
+ .tFEAT_max = 1000000,
+ .tIR_min = 0,
+ .tITC_max = 1000000,
+ .tRC_min = 50000,
+ .tREA_max = 30000,
+ .tREH_min = 15000,
+ .tRHOH_min = 15000,
+ .tRHW_min = 100000,
+ .tRHZ_max = 100000,
+ .tRLOH_min = 0,
+ .tRP_min = 25000,
+ .tRR_min = 20000,
+ .tRST_max = 500000000,
+ .tWB_max = 100000,
+ .tWC_min = 45000,
+ .tWH_min = 15000,
+ .tWHR_min = 80000,
+ .tWP_min = 25000,
+ .tWW_min = 100000,
+ },
+ /* Mode 2 */
+ {
+ .tADL_min = 100000,
+ .tALH_min = 10000,
+ .tALS_min = 15000,
+ .tAR_min = 10000,
+ .tCEA_max = 30000,
+ .tCEH_min = 20000,
+ .tCH_min = 10000,
+ .tCHZ_max = 50000,
+ .tCLH_min = 10000,
+ .tCLR_min = 10000,
+ .tCLS_min = 15000,
+ .tCOH_min = 15000,
+ .tCS_min = 25000,
+ .tDH_min = 5000,
+ .tDS_min = 15000,
+ .tFEAT_max = 1000000,
+ .tIR_min = 0,
+ .tITC_max = 1000000,
+ .tRC_min = 35000,
+ .tREA_max = 25000,
+ .tREH_min = 15000,
+ .tRHOH_min = 15000,
+ .tRHW_min = 100000,
+ .tRHZ_max = 100000,
+ .tRLOH_min = 0,
+ .tRR_min = 20000,
+ .tRST_max = 500000000,
+ .tWB_max = 100000,
+ .tRP_min = 17000,
+ .tWC_min = 35000,
+ .tWH_min = 15000,
+ .tWHR_min = 80000,
+ .tWP_min = 17000,
+ .tWW_min = 100000,
+ },
+ /* Mode 3 */
+ {
+ .tADL_min = 100000,
+ .tALH_min = 5000,
+ .tALS_min = 10000,
+ .tAR_min = 10000,
+ .tCEA_max = 25000,
+ .tCEH_min = 20000,
+ .tCH_min = 5000,
+ .tCHZ_max = 50000,
+ .tCLH_min = 5000,
+ .tCLR_min = 10000,
+ .tCLS_min = 10000,
+ .tCOH_min = 15000,
+ .tCS_min = 25000,
+ .tDH_min = 5000,
+ .tDS_min = 10000,
+ .tFEAT_max = 1000000,
+ .tIR_min = 0,
+ .tITC_max = 1000000,
+ .tRC_min = 30000,
+ .tREA_max = 20000,
+ .tREH_min = 10000,
+ .tRHOH_min = 15000,
+ .tRHW_min = 100000,
+ .tRHZ_max = 100000,
+ .tRLOH_min = 0,
+ .tRP_min = 15000,
+ .tRR_min = 20000,
+ .tRST_max = 500000000,
+ .tWB_max = 100000,
+ .tWC_min = 30000,
+ .tWH_min = 10000,
+ .tWHR_min = 80000,
+ .tWP_min = 15000,
+ .tWW_min = 100000,
+ },
+ /* Mode 4 */
+ {
+ .tADL_min = 70000,
+ .tALH_min = 5000,
+ .tALS_min = 10000,
+ .tAR_min = 10000,
+ .tCEA_max = 25000,
+ .tCEH_min = 20000,
+ .tCH_min = 5000,
+ .tCHZ_max = 30000,
+ .tCLH_min = 5000,
+ .tCLR_min = 10000,
+ .tCLS_min = 10000,
+ .tCOH_min = 15000,
+ .tCS_min = 20000,
+ .tDH_min = 5000,
+ .tDS_min = 10000,
+ .tFEAT_max = 1000000,
+ .tIR_min = 0,
+ .tITC_max = 1000000,
+ .tRC_min = 25000,
+ .tREA_max = 20000,
+ .tREH_min = 10000,
+ .tRHOH_min = 15000,
+ .tRHW_min = 100000,
+ .tRHZ_max = 100000,
+ .tRLOH_min = 5000,
+ .tRP_min = 12000,
+ .tRR_min = 20000,
+ .tRST_max = 500000000,
+ .tWB_max = 100000,
+ .tWC_min = 25000,
+ .tWH_min = 10000,
+ .tWHR_min = 80000,
+ .tWP_min = 12000,
+ .tWW_min = 100000,
+ },
+ /* Mode 5 */
+ {
+ .tADL_min = 70000,
+ .tALH_min = 5000,
+ .tALS_min = 10000,
+ .tAR_min = 10000,
+ .tCEA_max = 25000,
+ .tCEH_min = 20000,
+ .tCH_min = 5000,
+ .tCHZ_max = 30000,
+ .tCLH_min = 5000,
+ .tCLR_min = 10000,
+ .tCLS_min = 10000,
+ .tCOH_min = 15000,
+ .tCS_min = 15000,
+ .tDH_min = 5000,
+ .tDS_min = 7000,
+ .tFEAT_max = 1000000,
+ .tIR_min = 0,
+ .tITC_max = 1000000,
+ .tRC_min = 20000,
+ .tREA_max = 16000,
+ .tREH_min = 7000,
+ .tRHOH_min = 15000,
+ .tRHW_min = 100000,
+ .tRHZ_max = 100000,
+ .tRLOH_min = 5000,
+ .tRP_min = 10000,
+ .tRR_min = 20000,
+ .tRST_max = 500000000,
+ .tWB_max = 100000,
+ .tWC_min = 20000,
+ .tWH_min = 7000,
+ .tWHR_min = 80000,
+ .tWP_min = 10000,
+ .tWW_min = 100000,
+ },
+};
+
+/**
+ * onfi_async_timing_mode_to_sdr_timings - [NAND Interface] Retrieve NAND
+ * timings according to the given ONFI timing mode
+ * @mode: ONFI timing mode
+ */
+const struct nand_sdr_timings *onfi_async_timing_mode_to_sdr_timings(int mode)
+{
+ if (mode < 0 || mode > ARRAY_SIZE(onfi_sdr_timings))
+ return ERR_PTR(-EINVAL);
+
+ return &onfi_sdr_timings[mode];
+}
+EXPORT_SYMBOL(onfi_async_timing_mode_to_sdr_timings);
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index f3ff3a3..b8e3c2b 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -847,6 +847,7 @@ static inline bool nand_is_slc(struct nand_chip *chip)
return chip->bits_per_cell == 1;
}
+
/**
* struct nand_sdr_timings - SDR NAND chip timings
*
@@ -895,4 +896,7 @@ struct nand_sdr_timings {
u32 tWW_min;
};
+/* convert an ONFI timing mode to its timing characteristics. */
+const struct nand_sdr_timings *onfi_async_timing_mode_to_sdr_timings(int mode);
+
#endif /* __LINUX_MTD_NAND_H */
--
1.7.9.5
next prev parent reply other threads:[~2014-03-12 18:07 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-12 18:07 [PATCH v3 0/9] mtd: nand: add sunxi NAND Flash Controller support Boris BREZILLON
2014-03-12 18:07 ` [PATCH v3 1/9] mtd: nand: define struct nand_timings Boris BREZILLON
2014-04-30 17:51 ` Brian Norris
2014-05-01 17:36 ` Boris BREZILLON
2014-05-08 14:29 ` Lee Jones
2014-05-09 15:47 ` Boris BREZILLON
2014-05-20 18:13 ` Brian Norris
2014-03-12 18:07 ` Boris BREZILLON [this message]
2014-04-30 18:06 ` [PATCH v3 2/9] mtd: nand: add ONFI timing mode to nand_timings converter Brian Norris
2014-07-09 17:25 ` Brian Norris
2014-03-12 18:07 ` [PATCH v3 3/9] of: mtd: add NAND timing mode retrieval support Boris BREZILLON
2014-04-30 18:14 ` Brian Norris
2014-03-12 18:07 ` [PATCH v3 4/9] of: mtd: add documentation for the ONFI NAND timing mode property Boris BREZILLON
2014-03-12 18:27 ` Warner Losh
2014-03-12 18:48 ` Boris BREZILLON
2014-05-20 18:25 ` Brian Norris
2014-05-20 19:30 ` Boris BREZILLON
2014-05-20 19:51 ` Jason Gunthorpe
2014-05-20 19:55 ` Brian Norris
2014-05-20 19:52 ` Brian Norris
2014-05-20 21:32 ` Boris BREZILLON
2014-07-09 17:46 ` Brian Norris
2014-03-12 18:07 ` [PATCH v3 5/9] mtd: nand: add sunxi NAND flash controller support Boris BREZILLON
2014-05-09 16:03 ` Ezequiel Garcia
2014-05-09 16:47 ` Boris BREZILLON
2014-05-09 17:05 ` Ezequiel Garcia
2014-05-20 18:49 ` Brian Norris
2014-05-20 19:21 ` Brian Norris
2014-05-20 19:36 ` Boris BREZILLON
2014-03-12 18:07 ` [PATCH v3 6/9] mtd: nand: add sunxi NFC dt bindings doc Boris BREZILLON
2014-03-12 18:07 ` [PATCH v3 7/9] ARM: dt/sunxi: add NFC node to Allwinner A20 SoC Boris BREZILLON
2014-03-12 18:07 ` [PATCH v3 8/9] ARM: dt/sunxi: add A20 NAND controller pin definitions Boris BREZILLON
2014-03-12 18:07 ` [PATCH v3 9/9] ARM: sunxi/dt: enable NAND on cubietruck board Boris BREZILLON
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