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Groups > linux.kernel > #1513429

[PATCH v4 3/5] mtd: nand: Add bb_per_die and blocks_per_die fields to nand_chip

From Zach Brown <zach.brown@ni.com>
Newsgroups linux.kernel
Subject [PATCH v4 3/5] mtd: nand: Add bb_per_die and blocks_per_die fields to nand_chip
Date 2016-11-01 19:20 +0100
Message-ID <syLPd-3J3-39@gated-at.bofh.it> (permalink)
References <syLPc-3J3-11@gated-at.bofh.it>
Organization linux.* mail to news gateway

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The fields bb_per_die and blocks_per_die are useful determining the
number of bad blocks a MTD needs to allocate. How they are set will
depend on if the chip is ONFI, JEDEC or a full-id entry in the nand_ids
table.

Signed-off-by: Zach Brown <zach.brown@ni.com>
---
 include/linux/mtd/nand.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index d8905a2..3093827 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -771,6 +771,9 @@ nand_get_sdr_timings(const struct nand_data_interface *conf)
  *			supported, 0 otherwise.
  * @jedec_params:	[INTERN] holds the JEDEC parameter page when JEDEC is
  *			supported, 0 otherwise.
+ * @bb_per_die:	[INTERN] the max number of bad blocks each die of a
+ *			this nand device will encounter their life times.
+ * @blocks_per_die:	[INTERN] The number of PEBs in a die
  * @read_retries:	[INTERN] the number of read retry modes supported
  * @onfi_set_features:	[REPLACEABLE] set the features for ONFI nand
  * @onfi_get_features:	[REPLACEABLE] get the features for ONFI nand
@@ -853,6 +856,8 @@ struct nand_chip {
 		struct nand_onfi_params	onfi_params;
 		struct nand_jedec_params jedec_params;
 	};
+	u16  bb_per_die;
+	u32  blocks_per_die;
 
 	struct nand_data_interface *data_interface;
 
-- 
2.7.4

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[PATCH v4 0/5] mtd: use ONFI bad blocks per LUN to calculate UBI bad PEB limit Zach Brown <zach.brown@ni.com> - 2016-11-01 19:20 +0100
  [PATCH v4 5/5] mtd: nand: set bb_per_die and blocks_per_die for ONFI compliant chips Zach Brown <zach.brown@ni.com> - 2016-11-01 19:20 +0100
  [PATCH v4 1/5] mtd: introduce function max_bad_blocks Zach Brown <zach.brown@ni.com> - 2016-11-01 19:20 +0100
  [PATCH v4 4/5] mtd: nand: implement 'max_bad_blocks' mtd function Zach Brown <zach.brown@ni.com> - 2016-11-01 19:20 +0100
  [PATCH v4 3/5] mtd: nand: Add bb_per_die and blocks_per_die fields to nand_chip Zach Brown <zach.brown@ni.com> - 2016-11-01 19:20 +0100
    Re: [PATCH v4 3/5] mtd: nand: Add bb_per_die and blocks_per_die  fields to nand_chip Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-11-06 18:50 +0100
  Re: [PATCH v4 0/5] mtd: use ONFI bad blocks per LUN to calculate  UBI bad PEB limit Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-11-06 19:00 +0100

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