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| author | Hui Wang <hui.wang@canonical.com> | 2023-07-24 11:47:27 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-07-30 13:53:35 +0200 |
| commit | 77a82cebf0eb023203b4cb2235cab75afc77cccf (patch) | |
| tree | 4dc2124d93a07cd0ae4f364a67cf24914123deff /lib/packing.c | |
| parent | 130a9571aee966ad8ba65719fe6c32db7b26db6a (diff) | |
serial: sc16is7xx: Put IOControl register into regmap_volatile
According to the IOControl register bits description in the page 31 of
the product datasheet, we know the bit 3 of IOControl register is
softreset, this bit will self-clearing once the reset finish.
In the probe, the softreset bit is set, and when we read this register
from debugfs/regmap interface, we found the softreset bit is still
setting, this confused us for a while. Finally we found this register
is cached, to read the real value from register, we could put it
into the regmap_volatile().
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Link: https://lore.kernel.org/r/20230724034727.17335-1-hui.wang@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/packing.c')
0 files changed, 0 insertions, 0 deletions