regulator: Add pull down support
Some regulators need to be configured to pull down a resistor
when the regulator is disabled. Add an op (set_pull_down) and a
DT property + constraint to support this.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h
index 0152655..8ffb061 100644
--- a/include/linux/regulator/machine.h
+++ b/include/linux/regulator/machine.h
@@ -87,6 +87,7 @@
* applied.
* @apply_uV: Apply the voltage constraint when initialising.
* @ramp_disable: Disable ramp delay when initialising or when setting voltage.
+ * @pull_down: Enable pull down when regulator is disabled.
*
* @input_uV: Input voltage for regulator when supplied by another regulator.
*
@@ -141,6 +142,7 @@
unsigned boot_on:1; /* bootloader/firmware enabled regulator */
unsigned apply_uV:1; /* apply uV constraint if min == max */
unsigned ramp_disable:1; /* disable ramp delay */
+ unsigned pull_down:1; /* pull down resistor when regulator off */
};
/**