Messages in this thread Patch in this message | | | From | Mark Brown <> | Date | Wed, 20 Jul 2016 17:43:49 +0100 | Subject | Applied "regulator: da9053/52: Fix incorrectly stated minimum and maximum voltage limits" to the regulator tree |
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The patch
regulator: da9053/52: Fix incorrectly stated minimum and maximum voltage limits
has been applied to the regulator tree at
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From 707319b60ade4fefa4fc31138f4147f2a5abb88b Mon Sep 17 00:00:00 2001 From: Steve Twiss <stwiss.opensource@diasemi.com> Date: Wed, 20 Jul 2016 15:53:58 +0100 Subject: [PATCH] regulator: da9053/52: Fix incorrectly stated minimum and maximum voltage limits
This fix alters the minimum and maximum BUCK voltage limits for DA9052 and DA9053. It does so for the following cases:
DA9052 - BUCK3 (MEM) min: 0.925V -> 0.950V max: 2.500V -> 2.525V
DA9053 - BUCK3 (MEM) min: 0.925V -> 0.950V max: 2.500V -> 2.525V - BUCK4 (PERI) min: 0.925V -> 0.950V max: 2.500V -> 2.525V
The voltage range remains the same, but the limits are shifted by +0.025V.
This change is provided on DA9052:MEM, DA9053:MEM and DA9053:PERI and is a voltage difference of 0.025V, compared to those measured before this fix is applied. The patch has the effect of decreasing *all* measured voltages on those BUCKs when compared against the previously measured values for the same software voltage request.
For example, with this fix applied for DA9052:MEM, DA9053:MEM and DA9053:PERI, the following is true.
Because the previous software defined slot 0 as being 0.925V, if a request for 0.950V was previously sent, the slot 1 voltage would have been used. This would have corresponded to an actual measured voltage of 0.975V. But, with this patch fix, and with slot 0 properly aligned to 0.950V, if a voltage of 0.950V is requested by software, a measured value of 0.950V will be provided.
Tested-by: Steve Twiss <stwiss.opensource@diasemi.com> Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com> Signed-off-by: Mark Brown <broonie@kernel.org> --- drivers/regulator/da9052-regulator.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/regulator/da9052-regulator.c b/drivers/regulator/da9052-regulator.c index 1050cb77561a..9ececfef42d6 100644 --- a/drivers/regulator/da9052-regulator.c +++ b/drivers/regulator/da9052-regulator.c @@ -333,7 +333,7 @@ static const struct regulator_ops da9052_ldo_ops = { static struct da9052_regulator_info da9052_regulator_info[] = { DA9052_DCDC(BUCK1, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBCOREGO), DA9052_DCDC(BUCK2, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBPROGO), - DA9052_DCDC(BUCK3, 25, 925, 2500, 6, 6, DA9052_SUPPLY_VBMEMGO), + DA9052_DCDC(BUCK3, 25, 950, 2525, 6, 6, DA9052_SUPPLY_VBMEMGO), DA9052_DCDC(BUCK4, 50, 1800, 3600, 5, 6, 0), DA9052_LDO(LDO1, 50, 600, 1800, 5, 6, 0), DA9052_LDO(LDO2, 25, 600, 1800, 6, 6, DA9052_SUPPLY_VLDO2GO), @@ -350,8 +350,8 @@ static struct da9052_regulator_info da9052_regulator_info[] = { static struct da9052_regulator_info da9053_regulator_info[] = { DA9052_DCDC(BUCK1, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBCOREGO), DA9052_DCDC(BUCK2, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBPROGO), - DA9052_DCDC(BUCK3, 25, 925, 2500, 6, 6, DA9052_SUPPLY_VBMEMGO), - DA9052_DCDC(BUCK4, 25, 925, 2500, 6, 6, 0), + DA9052_DCDC(BUCK3, 25, 950, 2525, 6, 6, DA9052_SUPPLY_VBMEMGO), + DA9052_DCDC(BUCK4, 25, 950, 2525, 6, 6, 0), DA9052_LDO(LDO1, 50, 600, 1800, 5, 6, 0), DA9052_LDO(LDO2, 25, 600, 1800, 6, 6, DA9052_SUPPLY_VLDO2GO), DA9052_LDO(LDO3, 25, 1725, 3300, 6, 6, DA9052_SUPPLY_VLDO3GO), -- 2.8.1
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