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| author | Ryan Lee <ryans.lee@maximintegrated.com> | 2021-03-24 20:35:53 -0700 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-03-25 13:59:46 +0000 |
| commit | a23f9099ff1541f15704e96b784d3846d2a4483d (patch) | |
| tree | 914f691d5384c6b7f9f7947b26813feaf6bf48e0 /tools/perf/scripts/python | |
| parent | 632aeebe1b7a3a8b193d71942a10e66919bebfb8 (diff) | |
ASoC: max98373: Changed amp shutdown register as volatile
0x20FF(amp global enable) register was defined as non-volatile,
but it is not. Overheating, overcurrent can cause amp shutdown
in hardware.
'regmap_write' compare register readback value before writing
to avoid same value writing. 'regmap_read' just read cache
not actual hardware value for the non-volatile register.
When amp is internally shutdown by some reason, next 'AMP ON'
command can be ignored because regmap think amp is already ON.
Signed-off-by: Ryan Lee <ryans.lee@maximintegrated.com>
Link: https://lore.kernel.org/r/20210325033555.29377-1-ryans.lee@maximintegrated.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions