[U-Boot] [RFC 03/11] mtd/nand: support ONFI timing mode retrieval for non-ONFI

Roy Spliet
2015-06-05T11:52:36Z

From: yassin <yassinjaffer@gmail.com>

Signed-off-by: Roy Spliet <r.spliet@ultimaker.com>
---
drivers/mtd/nand/nand_base.c | 1 +
include/linux/mtd/nand.h | 7 +++++++
2 files changed, 8 insertions(+)

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index c0e381a..dbeb092 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -3709,6 +3709,7 @@ static bool find_full_id_nand(struct mtd_info *mtd, struct nand_chip *chip,
chip->options |= type->options;
chip->ecc_strength_ds = NAND_ECC_STRENGTH(type);
chip->ecc_step_ds = NAND_ECC_STEP(type);
+ chip->onfi_timing_mode_ds = type->onfi_timing_mode_ds;

*busw = type->options & NAND_BUSWIDTH_16;

diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index abda5c3..0cdb3b9 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -634,6 +634,7 @@ struct nand_buffers {
* @ecc_step_ds: [INTERN] ECC step required by the @ecc_strength_ds,
* also from the datasheet. It is the recommended ECC step
* size, if known; if unknown, set to zero.
+ * @onfi_timing_mode_ds:[INTERN] ONFI timing mode deduced from datasheet.
* @numchips: [INTERN] number of physical chips
* @chipsize: [INTERN] the size of one chip for multichip arrays
* @pagemask: [INTERN] page number mask = number of (pages / chip) - 1
@@ -718,6 +719,7 @@ struct nand_chip {
uint8_t bits_per_cell;
uint16_t ecc_strength_ds;
uint16_t ecc_step_ds;
+ int onfi_timing_mode_ds;
int badblockpos;
int badblockbits;

@@ -822,6 +824,10 @@ struct nand_chip {
* @ecc_step_ds in nand_chip{}, also from the datasheet.
* For example, the "4bit ECC for each 512Byte" can be set with
* NAND_ECC_INFO(4, 512).
+ * @onfi_timing_mode_ds: the ONFI timing mode supported by this NAND chip. This
+ * should be deduced from timings described in the
+ * datasheet.
+ *
*/
struct nand_flash_dev {
char *name;
@@ -842,6 +848,7 @@ struct nand_flash_dev {
uint16_t strength_ds;
uint16_t step_ds;
} ecc;
+ int onfi_timing_mode_ds;
};

/**
--
2.4.2

--

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