[PATCH 2/5] ASoC: tas2552: sort the register default table

Peter Ujfalusi <[email protected]> Wed, 5 Aug 2026 13:41:46 +0300
Newsgroups org.kernel.vger.linux-sound,org.kernel.vger.stable
Message-ID <[email protected]>
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: [email protected]
Signed-off-by: Peter Ujfalusi <[email protected]>
---
 sound/soc/codecs/tas2552.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/sound/soc/codecs/tas2552.c b/sound/soc/codecs/tas2552.c
index 1a7650b9b2a7..ea083d1cec2b 100644
--- 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},
 };
 
-- 
2.55.0