iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

regulator: tps65023: Fix inverted core enable logic.

Browse Source 
Commit 43530b69d7 ("regulator: Use
regmap_read/write(), regmap_update_bits functions directly") intended
to replace working inline helper functions with standard regmap
calls.  However, it also inverted the set/clear logic of the "CORE ADJ
Allowed" bit.  That patch was clearly never tested, since without that
bit cleared, the core VDCDC1 voltage output does not react to I2C
configuration changes.

This patch fixes the issue by clearing the bit as in the original,
correct implementation.  Note for stable back porting that, due to
subsequent driver churn, this patch will not apply on every kernel
version.

Fixes: 43530b69d7 ("regulator: Use regmap_read/write(), regmap_update_bits functions directly")
Signed-off-by: Richard Cochran <rcochran@linutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
This commit is contained in:
Richard Cochran 2017-04-17 10:23:36 +02:00 committed by Mark Brown
parent d00b74613f
commit c90722b54a
1 changed files with 1 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/regulator/tps65023-regulator.c
View File

@ -311,8 +311,7 @@ static int tps_65023_probe(struct i2c_client *client,
/* Enable setting output voltage by I2C */
regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
TPS65023_REG_CTRL2_CORE_ADJ,
TPS65023_REG_CTRL2_CORE_ADJ);
TPS65023_REG_CTRL2_CORE_ADJ, 0);
return 0;
}