Amp lose its register values in case amp power loss or 'ForceReset' over Soundwire SCP_ctrl register(0x0044) or HW_RESET pin control during the audio suspend and resume. Mark cache dirty before audio suspension to restore existing values when audio resume. Signed-off-by: Ryan Lee <ryans.lee@xxxxxxxxxxxxxxxxxxx> --- sound/soc/codecs/max98373-sdw.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/soc/codecs/max98373-sdw.c b/sound/soc/codecs/max98373-sdw.c index dc520effc61c..a7e4a6e880b0 100644 --- a/sound/soc/codecs/max98373-sdw.c +++ b/sound/soc/codecs/max98373-sdw.c @@ -259,6 +259,7 @@ static __maybe_unused int max98373_suspend(struct device *dev) regmap_read(max98373->regmap, max98373->cache[i].reg, &max98373->cache[i].val); regcache_cache_only(max98373->regmap, true); + regcache_mark_dirty(max98373->regmap); return 0; } -- 2.17.1
