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Durign a previous patch, 0x2 was mistakenly converted to BIT(2) whereas
it should be BIT(1).
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Ported from linux-4.19-at91 linux4sam_6.1 and needed for
SAMA5D27 SOM1 EK.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Based on the Linux v4.4 patch
commit c67cbb839da9cc2757eabfa128556db6a2baf160
Author: Brian Norris <computersforpeace@gmail.com>
AuthorDate: Tue Nov 10 12:15:27 2015 -0800
Commit: Brian Norris <computersforpeace@gmail.com>
CommitDate: Thu Nov 19 13:34:44 2015 -0800
mtd: spi-nor: provide default erase_sector implementation
Some spi-nor drivers perform sector erase by duplicating their
write_reg() command. Let's not require that the driver fill this out,
and provide a default instead.
Tested on m25p80.c and Medatek's MT8173 SPI NOR flash driver.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Sync the driver with Linux v4.12 and apply the patch
commit cfc5604c488ccd17936b69008af0c9ae050f4a08
Author: Cyrille Pitchen <cyrille.pitchen@atmel.com>
AuthorDate: Tue Apr 25 22:08:46 2017 +0200
Commit: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
CommitDate: Mon May 15 21:56:17 2017 +0200
mtd: spi-nor: introduce SPI 1-2-2 and SPI 1-4-4 protocols
This patch changes the prototype of spi_nor_scan(): its 3rd parameter
is replaced by a 'struct spi_nor_hwcaps' pointer, which tells the spi-nor
framework about the actual hardware capabilities supported by the SPI
controller and its driver.
Besides, this patch also introduces a new 'struct spi_nor_flash_parameter'
telling the spi-nor framework about the hardware capabilities supported by
the SPI flash memory and the associated settings required to use those
hardware caps.
Then, to improve the readability of spi_nor_scan(), the discovery of the
memory settings and the memory initialization are now split into two
dedicated functions.
1 - spi_nor_init_params()
The spi_nor_init_params() function is responsible for initializing the
'struct spi_nor_flash_parameter'. Currently this structure is filled with
legacy values but further patches will allow to override some parameter
values dynamically, for instance by reading the JESD216 Serial Flash
Discoverable Parameter (SFDP) tables from the SPI memory.
The spi_nor_init_params() function only deals with the hardware
capabilities of the SPI flash memory: especially it doesn't care about
the hardware capabilities supported by the SPI controller.
2 - spi_nor_setup()
The second function is called once the 'struct spi_nor_flash_parameter'
has been initialized by spi_nor_init_params().
With both 'struct spi_nor_flash_parameter' and 'struct spi_nor_hwcaps',
the new argument of spi_nor_scan(), spi_nor_setup() computes the best
match between hardware caps supported by both the (Q)SPI memory and
controller hence selecting the relevant settings for (Fast) Read and Page
Program operations.
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Based on the Linux v4.3 patch:
commit 79c452adb159dc9abc507ea13faec8d115a78758
Author: Cyrille Pitchen <cyrille.pitchen@atmel.com>
AuthorDate: Fri Sep 18 17:49:25 2015 +0200
Commit: Brian Norris <computersforpeace@gmail.com>
CommitDate: Mon Sep 21 16:49:52 2015 -0700
mtd: spi-nor: remove unused read_xfer/write_xfer hooks
struct spi_nor_xfer_cfg and read_xfer/write_xfer hooks were never used by
any driver. Do some cleanup by removing them.
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Based on the Linux v4.2 commit:
commit f9f3ce835ddce3c669eee869253105f88819888b
Author: Jagan Teki <jteki@openedev.com>
AuthorDate: Wed Aug 19 15:26:44 2015 +0530
Commit: Brian Norris <computersforpeace@gmail.com>
CommitDate: Fri Sep 11 16:04:55 2015 -0700
mtd: spi-nor: Zap unneeded write_enable from write_reg
The 'write_enable' argument is unused and unneeded, so remove it from
the API.
Signed-off-by: Jagan Teki <jteki@openedev.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Han Xu <han.xu@freescale.com>
[Brian: fixed for nxp-spifi.c]
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Move mutex related defines to its original place.
Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Some SPI NOR flashes support 4K erase blocks. 4K erase blocks do not
work with UBIFS which needs a minimum erase block size of 15360 bytes.
Also bigger sectors are faster to erase. This patch adds a device tree
option to use the bigger blocks instead of the default 4K blocks.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
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Import the SPI-NOR framework from linux kernel v3.19.
Signed-off-by: Enrico Jorns <ejo@pengutronix.de>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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