From: Sascha Hauer <s.hauer@pengutronix.de>
To: linux-mtd@lists.infradead.org
Cc: Sam Lefebvre <sam.lefebvre@essensium.com>,
Boris Brezillon <bbrezillon@kernel.org>,
Richard Weinberger <richard@nod.at>,
Sascha Hauer <s.hauer@pengutronix.de>,
kernel@pengutronix.de, Miquel Raynal <miquel.raynal@bootlin.com>,
Han Xu <han.xu@nxp.com>
Subject: [PATCH 00/10] Implement exec_op for GPMI nand driver
Date: Fri, 5 Apr 2019 12:07:30 +0200 [thread overview]
Message-ID: <20190405100740.5074-1-s.hauer@pengutronix.de> (raw)
The GPMI nand driver suffers from very poor performance. The read
performance can be roughly doubled with two steps: First is to use
runtime PM for controlling the clocks which prevents the driver from
spending a good amount of time en/disabling the clocks. The second step
is to implement exec_op which allows us to combine the steps necessary
to do a page read into a single DMA transaction.
Sascha
Sascha Hauer (10):
mtd: rawnand: export nand operation tracer
mtd: rawnand: fsmc: Use nand_op_trace for operation tracing
mtd: rawnand: gpmi: move all driver code into single file
mtd: rawnand: gpmi: remove unused variable
mtd: rawnand: gpmi: Remove unnecessary variables
mtd: rawnand: gpmi: read buf in nand_read_page_op
mtd: rawnand: gpmi: remove unused parameters
mtd: rawnand: gpmi: Drop unnecessary restoring of previous chipselection
mtd: rawnand: gpmi: use runtime PM to manage clocks
mtd: rawnand: gpmi: Implement exec_op
drivers/dma/mxs-dma.c | 3 +
drivers/mtd/nand/raw/fsmc_nand.c | 19 +-
drivers/mtd/nand/raw/gpmi-nand/Makefile | 1 -
drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c | 936 -----------
drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c | 1694 ++++++++++++++------
drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h | 64 +-
drivers/mtd/nand/raw/nand_base.c | 30 +-
include/linux/mtd/rawnand.h | 37 +
8 files changed, 1236 insertions(+), 1548 deletions(-)
delete mode 100644 drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c
--
2.20.1
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next reply other threads:[~2019-04-05 10:09 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-05 10:07 Sascha Hauer [this message]
2019-04-05 10:07 ` [PATCH 01/10] mtd: rawnand: export nand operation tracer Sascha Hauer
2019-04-05 10:07 ` [PATCH 02/10] mtd: rawnand: fsmc: Use nand_op_trace for operation tracing Sascha Hauer
2019-04-05 10:07 ` [PATCH 03/10] mtd: rawnand: gpmi: move all driver code into single file Sascha Hauer
2019-04-05 10:07 ` [PATCH 04/10] mtd: rawnand: gpmi: remove unused variable Sascha Hauer
2019-04-05 10:07 ` [PATCH 05/10] mtd: rawnand: gpmi: Remove unnecessary variables Sascha Hauer
2019-04-05 10:07 ` [PATCH 06/10] mtd: rawnand: gpmi: read buf in nand_read_page_op Sascha Hauer
2019-04-05 10:07 ` [PATCH 07/10] mtd: rawnand: gpmi: remove unused parameters Sascha Hauer
2019-04-05 10:07 ` [PATCH 08/10] mtd: rawnand: gpmi: Drop unnecessary restoring of previous chipselection Sascha Hauer
2019-04-05 10:07 ` [PATCH 09/10] mtd: rawnand: gpmi: use runtime PM to manage clocks Sascha Hauer
2019-04-05 10:23 ` Lucas Stach
2019-04-05 10:07 ` [PATCH 10/10] mtd: rawnand: gpmi: Implement exec_op Sascha Hauer
2019-04-05 14:10 ` Sascha Hauer
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