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| author | Daniel Golle <daniel@makrotopia.org> | 2018-06-07 01:51:58 +0200 |
|---|---|---|
| committer | Daniel Golle <daniel@makrotopia.org> | 2018-06-07 02:34:13 +0200 |
| commit | 8796680277f4b231386fbc6e8a1ccae91d9fcbe8 (patch) | |
| tree | 7b7cc964fec7ef442f0a2fdaba4ae0ce3970583f /package/kernel/brcm2708-gpu-fw | |
| parent | 1bbe813db0bb8dc65b8ed7740cf7f35a81b8ba0e (diff) | |
| download | upstream-8796680277f4b231386fbc6e8a1ccae91d9fcbe8.tar.gz upstream-8796680277f4b231386fbc6e8a1ccae91d9fcbe8.tar.bz2 upstream-8796680277f4b231386fbc6e8a1ccae91d9fcbe8.zip | |
ramips: fix reboot with W25Q256 with 4-address-mode enabled
Some board vendors actually changed the loader to expect the chip
to come up in 4-address-mode and flipped the ADP bit in the flash
chip's configuration register which makes it come up in 4-address-mode.
Hence it doesn't make sense to avoid switching to 4-address-mode on
those boards but the opposite as otherwise reboot hangs eg. on the
WrtNode2 boards. Fix this by checking the ADP register and only using
SPI_NOR_4B_READ_OP on chips which have ADP==0 (come up in 3-byte mode).
See also datasheet section 7.1.11 Power Up Address Mode (ADP)
Fixes: 22d982ea0 ("ramips: add support for switching between 3-byte and 4-byte addressing on w25q256 flash")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Diffstat (limited to 'package/kernel/brcm2708-gpu-fw')
0 files changed, 0 insertions, 0 deletions