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| author | Felix Fietkau <nbd@nbd.name> | 2017-07-20 12:57:44 +0200 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2017-11-02 15:58:45 +0100 |
| commit | 22d982ea003360d86ff1fef5114fb41dfa09ce9b (patch) | |
| tree | 75ff15cf3401bca8d36f5afe9c1f5927dde805e4 /target/linux/ramips/image/rt305x-legacy.mk | |
| parent | f90f94d2c183dde6c214bc5068c33085d5f53290 (diff) | |
| download | upstream-22d982ea003360d86ff1fef5114fb41dfa09ce9b.tar.gz upstream-22d982ea003360d86ff1fef5114fb41dfa09ce9b.tar.bz2 upstream-22d982ea003360d86ff1fef5114fb41dfa09ce9b.zip | |
ramips: add support for switching between 3-byte and 4-byte addressing on w25q256 flash
On some devices the flash chip needs to be in 3-byte addressing mode during
reboot, otherwise the boot loader will fail to start.
This mode however does not allow regular reads/writes onto the upper 16M
half. W25Q256 has separate read commands for reading from >16M, however
it does not have any separate write commands.
This patch changes the code to leave the chip in 3-byte mode most of the
time and only switch during erase/write cycles that go to >16M
addresses.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'target/linux/ramips/image/rt305x-legacy.mk')
0 files changed, 0 insertions, 0 deletions