On Thu, Apr 30, 2009 at 12:31:47PM +0300, Grazvydas Ignotas wrote:
> On Wed, Apr 29, 2009 at 7:03 PM, Steve Sakoman <sakoman@xxxxxxxxx> wrote:
> > set_machine_constraints: invalid 'VUSB1V5' voltage constraints
> I get the same on pandora, although it continues booting fine after
> that. Maybe regulator folks will comment about regulator errors.
I suspect this may be due to the buggy defaults that are provided when
no voltage constraints are given for a fixed voltage regulator. There's
a patch on its way to mainline fixing this:
commit 14d32bb077f7cc6f78bd012e5b1489899dddf749
Author: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Date: Tue Apr 28 11:09:38 2009 +0100
regulator: Fix default constraints for fixed voltage regulators
Default voltage constraints were being provided for fixed voltage
regulator where board constraints were not provided but these constraints
used INT_MIN as the default minimum voltage which is not a valid value
since it is less than zero. Use 1uV instead.
Also set the default values we set in the constraints themselves since
otherwise the max_uV constraint we determine will not be stored in the
actual constraint strucutre and will therefore not be used.
Signed-off-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Liam Girdwood <lrg@xxxxxxxxxxxxxxx>
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 2f14c16..98c3a74 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -703,10 +703,13 @@ static int set_machine_constraints(struct regulator_dev *rdev,
int cmin = constraints->min_uV;
int cmax = constraints->max_uV;
- /* it's safe to autoconfigure fixed-voltage supplies */
+ /* it's safe to autoconfigure fixed-voltage supplies
+ and the constraints are used by list_voltage. */
if (count == 1 && !cmin) {
- cmin = INT_MIN;
+ cmin = 1;
cmax = INT_MAX;
+ constraints->min_uV = cmin;
+ constraints->max_uV = cmax;
}
/* voltage constraints are optional */
--
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