Hi,
On Wed, Mar 12, 2014 at 07:07:37PM +0100, Boris BREZILLON wrote:
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@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
This patch doesn't apply to l2-mtd.git. Are you basing this on your
Hynix patches? I thought some (all?) of them were determined
unnecessary. Anyway, please rebase on l2-mtd.git, since there are a
couple of other bits that don't apply properly.
diff --git a/drivers/mtd/nand/nand_timings.c b/drivers/mtd/nand/nand_timings.c
new file mode 100644
index 000..f66fe95
--- /dev/null
+++ b/drivers/mtd/nand/nand_timings.c
@@ -0,0 +1,248 @@
+/*
+ * Copyright (C) 2014 Boris BREZILLON b.brezillon@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 = 20,
+ .tALH_min = 2,
+ .tALS_min = 5,
+ .tAR_min = 25000,
+ .tCEA_max = 10,
+ .tCEH_min = 2,
+ .tCH_min = 2,
+ .tCHZ_max = 10,
+ .tCLH_min = 2,
+ .tCLR_min = 2,
+ .tCLS_min = 5,
+ .tCOH_min = 0,
+ .tCS_min = 7,
+ .tDH_min = 2,
+ .tDS_min = 4,
+ .tFEAT_max = 100,
+ .tIR_min = 1,
+ .tITC_max = 100,
+ .tRC_min = 10,
+ .tREA_max = 4,
+ .tREH_min = 3,
+ .tRHOH_min = 0,
+ .tRHW_min = 20,
+ .tRHZ_max = 20,
+ .tRLOH_min = 0,
+ .tRP_min = 5,
+ .tRST_max = 2500,
I was initially wary of potential overflow here, but apparently the C
standard (section 6.4.4.1) ensures that literal constants like this will
be promoted to a sufficiently-large type.
+ .tWB_max = 20,
+ .tRR_min = 4,
+ .tWC_min = 10,
+ .tWH_min = 3,
+ .tWHR_min = 12,
+ .tWP_min = 5,
+ .tWW_min = 10,
+ },
+ /* Mode 1 */
+ {
+ .tADL_min = 10,
+ .tALH_min = 1,
+ .tALS_min = 25000,
+ .tAR_min = 1,
+ .tCEA_max = 45000,
+ .tCEH_min = 2,
+ .tCH_min = 1,
+ .tCHZ_max = 5,
+ .tCLH_min = 1,
+ .tCLR_min = 1,
+ .tCLS_min = 25000,
+ .tCOH_min = 15000,
+ .tCS_min = 35000,
+ .tDH_min = 1,
+ .tDS_min = 2,
+ .tFEAT_max = 100,
+ .tIR_min = 0,
+ .tITC_max = 100,
+ .tRC_min = 5,
+ .tREA_max = 3,
+ .tREH_min = 15000,
+ .tRHOH_min = 15000,
+ .tRHW_min = 10,
+ .tRHZ_max = 10,
+ .tRLOH_min = 0,
+ .tRP_min = 25000,
+ .tRR_min = 2,
+ .tRST_max = 5,
+ .tWB_max = 10,
+ .tWC_min = 45000,
+ .tWH_min = 15000,
+ .tWHR_min = 8,
+ .tWP_min = 25000,
+ .tWW_min = 10,
+ },
+ /* Mode 2 */
+ {
+ .tADL_min = 10,
+ .tALH_min = 1,
+ .tALS_min = 15000,
+ .tAR_min = 1,
+ .tCEA_max = 3,
+ .tCEH_min = 2,
+ .tCH_min = 1,
+ .tCHZ_max = 5,
+ .tCLH_min = 1,
+ .tCLR_min = 1,
+ .tCLS_min = 15000,
+ .tCOH_min = 15000,
+ .tCS_min = 25000,
+ .tDH_min = 5000,
+ .tDS_min = 15000,
+
