6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Peter Ujfalusi commit 1cc0cb62d306bb7c42e3d4649863df7c279ac850 upstream. reg_defaults must be sorted by ascending register address, as regcache_lookup_reg() locates entries in it with bsearch(). See commit fd80df352ba1 ("regcache: Add support for sorting defaults arrays"). TAS2552_OUTPUT_DATA (0x07), TAS2552_PDM_CFG (0x11), TAS2552_PGA_GAIN (0x12) and TAS2552_BOOST_APT_CTRL (0x14) are listed before TAS2552_RESERVED_0D (0x0d), TAS2552_LIMIT_RATE_HYS (0x0e) and TAS2552_CFG_2 (0x02), which leaves 7 of the 21 entries unreachable. regcache_reg_needs_sync() then cannot compare them against their default and reports that a sync is needed, so they are written to the device on every regcache_sync() even when they were never touched. Sort the table by register address. Fixes: 5df7f71d5cdf ("ASoC: tas2552: Support TI TAS2552 Amplifier") Cc: stable@vger.kernel.org Signed-off-by: Peter Ujfalusi Link: https://patch.msgid.link/20260805104149.9795-3-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- sound/soc/codecs/tas2552.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) --- a/sound/soc/codecs/tas2552.c +++ b/sound/soc/codecs/tas2552.c @@ -31,25 +31,25 @@ static const struct reg_default tas2552_reg_defs[] = { {TAS2552_CFG_1, 0x22}, + {TAS2552_CFG_2, 0xef}, {TAS2552_CFG_3, 0x80}, {TAS2552_DOUT, 0x00}, - {TAS2552_OUTPUT_DATA, 0xc0}, - {TAS2552_PDM_CFG, 0x01}, - {TAS2552_PGA_GAIN, 0x00}, - {TAS2552_BOOST_APT_CTRL, 0x0f}, - {TAS2552_RESERVED_0D, 0xbe}, - {TAS2552_LIMIT_RATE_HYS, 0x08}, - {TAS2552_CFG_2, 0xef}, {TAS2552_SER_CTRL_1, 0x00}, {TAS2552_SER_CTRL_2, 0x00}, + {TAS2552_OUTPUT_DATA, 0xc0}, {TAS2552_PLL_CTRL_1, 0x10}, {TAS2552_PLL_CTRL_2, 0x00}, {TAS2552_PLL_CTRL_3, 0x00}, {TAS2552_BTIP, 0x8f}, {TAS2552_BTS_CTRL, 0x80}, + {TAS2552_RESERVED_0D, 0xbe}, + {TAS2552_LIMIT_RATE_HYS, 0x08}, {TAS2552_LIMIT_RELEASE, 0x04}, {TAS2552_LIMIT_INT_COUNT, 0x00}, + {TAS2552_PDM_CFG, 0x01}, + {TAS2552_PGA_GAIN, 0x00}, {TAS2552_EDGE_RATE_CTRL, 0x40}, + {TAS2552_BOOST_APT_CTRL, 0x0f}, {TAS2552_VBAT_DATA, 0x00}, };