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authorDaniel Schwierzeck <daniel.schwierzeck@gmail.com>2015-04-27 07:42:04 +0200
committerJagan Teki <jteki@openedev.com>2015-06-30 00:40:11 +0530
commit9fe6d8716e090f3b2dd3f4604acfced124b8a2fc (patch)
tree1748f1f1fe2457e26d4ff1d725a9a8d36a5a0f53 /README
parentecfbaa869aa8bd318a017e557faefac2353e9a60 (diff)
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mtd, spi: Add MTD layer driver
Add MTD layer driver for spi, original patch from: http://git.denx.de/?p=u-boot/u-boot-mips.git;a=commitdiff;h=bb246819cdc90493dd7089eaa51b9e639765cced Changes from Heiko Schocher against this patch: - Remove compile error if not defining CONFIG_SPI_FLASH_MTD: LD drivers/mtd/spi/built-in.o drivers/mtd/spi/sf_probe.o: In function `spi_flash_mtd_unregister': /home/hs/abb/imx6/u-boot/drivers/mtd/spi/sf_internal.h:168: multiple definition of `spi_flash_mtd_unregister' drivers/mtd/spi/sf_params.o:/home/hs/abb/imx6/u-boot/drivers/mtd/spi/sf_internal.h:168: first defined here drivers/mtd/spi/sf_ops.o: In function `spi_flash_mtd_unregister': /home/hs/abb/imx6/u-boot/drivers/mtd/spi/sf_internal.h:168: multiple definition of `spi_flash_mtd_unregister' drivers/mtd/spi/sf_params.o:/home/hs/abb/imx6/u-boot/drivers/mtd/spi/sf_internal.h:168: first defined here make[1]: *** [drivers/mtd/spi/built-in.o] Fehler 1 make: *** [drivers/mtd/spi] Fehler 2 - Add a README entry. - Add correct writebufsize, to fit with Linux v3.14 MTD, UBI/UBIFS sync. Note (From Jagan): For testing raw mtd parition erase/read/write operations using cmd_sf, sf_mtd should be required to register the spi flash device to MTD layer but the sf_mtd_info ops were not required until and unless if we use any flash filesystem layer say for example UBI. Due to this the foot-print got increased ~290bytes in non-UBI case here that should be acceptible. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Signed-off-by: Heiko Schocher <hs@denx.de> Tested-by: Jagannadh Teki <jteki@openedev.com> Reviewed-by: Jagannadh Teki <jteki@openedev.com>
Diffstat (limited to 'README')
-rw-r--r--README9
1 files changed, 9 insertions, 0 deletions
diff --git a/README b/README
index 8109e5d..168d824 100644
--- a/README
+++ b/README
@@ -3090,6 +3090,15 @@ CBFS (Coreboot Filesystem) support
memories can be connected with a given cs line.
Currently Xilinx Zynq qspi supports these type of connections.
+ CONFIG_SPI_FLASH_MTD spi-flash MTD layer
+
+ Define this option to use mtd support for spi flash layer, this
+ adapter is for translating mtd_read/mtd_write commands into
+ spi_flash_read/spi_flash_write commands. It is not intended to
+ use it within sf_cmd or the SPI flash subsystem. Such an adapter
+ is needed for subsystems like UBI which can only operate on top
+ of the MTD layer.
+
- SystemACE Support:
CONFIG_SYSTEMACE
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