diff options
| author | Peter Geis <pgwipeout@gmail.com> | 2021-05-11 17:13:33 -0400 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-05-12 16:26:39 +0100 |
| commit | d4db69eba290732357f03ba0a14350b81f778290 (patch) | |
| tree | 1a195ff6b2ab7eb327d493a0b2eba694cb6b43f9 /drivers | |
| parent | d019f38a1af3c6015cde6a47951a3ec43beeed80 (diff) | |
| download | linux-d4db69eba290732357f03ba0a14350b81f778290.tar.bz2 | |
regulator: fan53555: fix TCS4525 voltage calulation
The TCS4525 has 128 voltage steps. With the calculation set to 127 the
most significant bit is disregarded which leads to a miscalculation of
the voltage by about 200mv.
Fix the calculation to end deadlock on the rk3566-quartz64 which uses
this as the cpu regulator.
Fixes: 914df8faa7d6 ("regulator: fan53555: Add TCS4525 DCDC support")
Signed-off-by: Peter Geis <pgwipeout@gmail.com>
Link: https://lore.kernel.org/r/20210511211335.2935163-2-pgwipeout@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/regulator/fan53555.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/regulator/fan53555.c b/drivers/regulator/fan53555.c index f3918f03aaf3..26f06f685b1b 100644 --- a/drivers/regulator/fan53555.c +++ b/drivers/regulator/fan53555.c @@ -55,7 +55,6 @@ #define FAN53555_NVOLTAGES 64 /* Numbers of voltages */ #define FAN53526_NVOLTAGES 128 -#define TCS4525_NVOLTAGES 127 /* Numbers of voltages */ #define TCS_VSEL_NSEL_MASK 0x7f #define TCS_VSEL0_MODE (1 << 7) @@ -376,7 +375,7 @@ static int fan53555_voltages_setup_tcs(struct fan53555_device_info *di) /* Init voltage range and step */ di->vsel_min = 600000; di->vsel_step = 6250; - di->vsel_count = TCS4525_NVOLTAGES; + di->vsel_count = FAN53526_NVOLTAGES; return 0; } |