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| author | Zhian Liang <liangzhan5dev@gmail.com> | 2026-07-15 13:51:35 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2026-07-15 13:57:14 -0700 |
| commit | 1cd52a99c868b19b419485d2ae9b76ac3e717c2c (patch) | |
| tree | 5b5159f194b43f7a05c4027eb7ca569b1681fb22 /tools/perf/scripts/python/stackcollapse.py | |
| parent | c31398588d295a77e6b5b62d9a59caafffc797e4 (diff) | |
Input: tca8418_keypad - enable overflow mode per datasheet (SCPS215G)
The driver currently sets only the overflow interrupt enable bit
(OVR_FLOW_IEN) in the configuration register, leaving the overflow
mode bit (OVR_FLOW_M) at its default value of 0.
According to the TCA8418 datasheet (SCPS215G, Section 8.6.4.1
"Overflow Errata - Description"), both OVR_FLOW_M (Bit_5) and
OVR_FLOW_IEN (Bit_3) must be set high for the overflow interrupt
to be generated. If only OVR_FLOW_IEN is set, FIFO overflow events
are silently lost without notifying the host.
Fix this by setting OVR_FLOW_M alongside OVR_FLOW_IEN in the
configuration register.
Signed-off-by: Zhian Liang <liangzhan5dev@gmail.com>
Link: https://patch.msgid.link/20260529013900.43854-1-liangzhan5dev@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions