diff options
| author | Jagannadha Sutradharudu Teki | 2015-04-23 19:52:11 +0530 |
|---|---|---|
| committer | Jagannadha Sutradharudu Teki | 2015-04-23 19:53:29 +0530 |
| commit | 122d805fd4bd478bb83536348291d34ae648364b (patch) | |
| tree | 997ff00471b090d17cd49c93404b45c37b0c3086 /README | |
| parent | 9694b724421b88acf7d553a55e4a43fa4e25e7be (diff) | |
Revert "spi: add config option to enable the WP pin function on st micron flashes"
This reverts commit 562f8df18da62ae02c4ace1e530451fe82c3312d.
Note: Even un-reverting this patch couldn't works as expected, based
on the latest testing from Heiko Schocher.
Signed-off-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Cc: Heiko Schocher <hs@denx.de>
Diffstat (limited to 'README')
| -rw-r--r-- | README | 11 |
1 files changed, 0 insertions, 11 deletions
@@ -3086,17 +3086,6 @@ CBFS (Coreboot Filesystem) support memories can be connected with a given cs line. Currently Xilinx Zynq qspi supports these type of connections. - CONFIG_SYS_SPI_ST_ENABLE_WP_PIN - enable the W#/Vpp signal to disable writing to the status - register on ST MICRON flashes like the N25Q128. - The status register write enable/disable bit, combined with - the W#/VPP signal provides hardware data protection for the - device as follows: When the enable/disable bit is set to 1, - and the W#/VPP signal is driven LOW, the status register - nonvolatile bits become read-only and the WRITE STATUS REGISTER - operation will not execute. The only way to exit this - hardware-protected mode is to drive W#/VPP HIGH. - - SystemACE Support: CONFIG_SYSTEMACE |