From: Boris Brezillon <boris.brezillon@free-electrons.com>
To: Zach Brown <zach.brown@ni.com>
Cc: <dwmw2@infradead.org>, <computersforpeace@gmail.com>,
<richard@nod.at>, <dedekind1@gmail.com>,
<linux-mtd@lists.infradead.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v4 3/5] mtd: nand: Add bb_per_die and blocks_per_die fields to nand_chip
Date: Sun, 6 Nov 2016 18:49:00 +0100 [thread overview]
Message-ID: <20161106184900.1c937981@bbrezillon> (raw)
In-Reply-To: <1478024190-13713-4-git-send-email-zach.brown@ni.com>
On Tue, 1 Nov 2016 13:16:28 -0500
Zach Brown <zach.brown@ni.com> wrote:
> 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;
Why not max_bb_per_die?
And please put a single space between the type and the field name.
> + u32 blocks_per_die;
>
> struct nand_data_interface *data_interface;
>
next prev parent reply other threads:[~2016-11-06 17:49 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-01 18:16 [PATCH v4 0/5] mtd: use ONFI bad blocks per LUN to calculate UBI bad PEB limit Zach Brown
2016-11-01 18:16 ` [PATCH v4 1/5] mtd: introduce function max_bad_blocks Zach Brown
2016-11-01 18:16 ` [PATCH v4 2/5] mtd: ubi: use 'max_bad_blocks' to compute bad_peb_limit if available Zach Brown
2016-11-01 18:16 ` [PATCH v4 3/5] mtd: nand: Add bb_per_die and blocks_per_die fields to nand_chip Zach Brown
2016-11-06 17:49 ` Boris Brezillon [this message]
2016-11-01 18:16 ` [PATCH v4 4/5] mtd: nand: implement 'max_bad_blocks' mtd function Zach Brown
2016-11-01 18:16 ` [PATCH v4 5/5] mtd: nand: set bb_per_die and blocks_per_die for ONFI compliant chips Zach Brown
2016-11-06 17:51 ` [PATCH v4 0/5] mtd: use ONFI bad blocks per LUN to calculate UBI bad PEB limit Boris Brezillon
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