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| author | Sylvain Munaut <tnt@246tNt.com> | 2020-06-02 10:31:17 +0200 |
|---|---|---|
| committer | Sylvain Munaut <tnt@246tNt.com> | 2021-12-17 19:45:34 +0100 |
| commit | c5a8beffec05c906b0f3a06eed1f2820d11d8b15 (patch) | |
| tree | 7d4db4d7e32e7301cdae6de6e67b0bc60d790c2e | |
| parent | 502d847b41e7ee80ccffb253afaae8c72e983a01 (diff) | |
| download | icestorm-c5a8beffec05c906b0f3a06eed1f2820d11d8b15.tar.gz icestorm-c5a8beffec05c906b0f3a06eed1f2820d11d8b15.tar.bz2 icestorm-c5a8beffec05c906b0f3a06eed1f2820d11d8b15.zip | |
iceprog: Improve reset to disable both CRM and QPI
It's hard to cover 100% of cases, but this seems to improve
probability that a reset works, at least for me on the icebreaker.
Some other flash have a different QPI disable command though :/
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
| -rw-r--r-- | iceprog/iceprog.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/iceprog/iceprog.c b/iceprog/iceprog.c index 8c3827b..34245e3 100644 --- a/iceprog/iceprog.c +++ b/iceprog/iceprog.c @@ -202,9 +202,15 @@ static void flash_reset() { uint8_t data[8] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; + // This disables CRM is if it was enabled flash_chip_select(); mpsse_xfer_spi(data, 8); flash_chip_deselect(); + + // This disables QPI if it was enable + flash_chip_select(); + mpsse_xfer_spi_bits(0xFF, 2); + flash_chip_deselect(); } static void flash_power_up() |