From: Herve Codina <herve.codina@bootlin.com>
To: Miquel Raynal <miquel.raynal@bootlin.com>,
Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>
Cc: linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org,
Herve Codina <herve.codina@bootlin.com>,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Subject: [PATCH 3/4] mtd: rawnand: fsmc: Take instruction delay into account
Date: Fri, 12 Nov 2021 15:38:54 +0100 [thread overview]
Message-ID: <20211112143855.2678989-4-herve.codina@bootlin.com> (raw)
In-Reply-To: <20211112143855.2678989-1-herve.codina@bootlin.com>
The FSMC nand controller should apply a delay after the
instruction has been issued on the bus.
The FSMC nand controller driver did not handle this delay.
This patch adds this waiting delay in the FSMC nand
controller driver.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
drivers/mtd/nand/raw/fsmc_nand.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/mtd/nand/raw/fsmc_nand.c b/drivers/mtd/nand/raw/fsmc_nand.c
index 7f057cfee6c4..bff09219ce3a 100644
--- a/drivers/mtd/nand/raw/fsmc_nand.c
+++ b/drivers/mtd/nand/raw/fsmc_nand.c
@@ -15,6 +15,7 @@
#include <linux/clk.h>
#include <linux/completion.h>
+#include <linux/delay.h>
#include <linux/dmaengine.h>
#include <linux/dma-direction.h>
#include <linux/dma-mapping.h>
@@ -667,6 +668,9 @@ static int fsmc_exec_op(struct nand_chip *chip, const struct nand_operation *op,
instr->ctx.waitrdy.timeout_ms);
break;
}
+
+ if (instr->delay_ns)
+ ndelay(instr->delay_ns);
}
return ret;
--
2.31.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
next prev parent reply other threads:[~2021-11-12 14:54 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-12 14:38 [PATCH 0/4] mtd: rawnand: Fixes nand infra delay setting and FSMC nand controller Herve Codina
2021-11-12 14:38 ` [PATCH 1/4] mtd: rawnand: Fix nand_erase_op delay Herve Codina
2021-11-12 14:38 ` [PATCH 2/4] mtd: rawnand: fsmc: Force to use 8 bits access when expected Herve Codina
2021-11-12 15:38 ` Miquel Raynal
2021-11-17 13:47 ` Herve Codina
2021-11-12 14:38 ` Herve Codina [this message]
2021-11-12 14:38 ` [PATCH 4/4] mtd: rawnand: fsmc: Fix timing computation Herve Codina
2021-11-12 15:52 ` Miquel Raynal
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20211112143855.2678989-4-herve.codina@bootlin.com \
--to=herve.codina@bootlin.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mtd@lists.infradead.org \
--cc=miquel.raynal@bootlin.com \
--cc=richard@nod.at \
--cc=thomas.petazzoni@bootlin.com \
--cc=vigneshr@ti.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox