sunxi: axp2xx: disable ldoio0/1 at boot
When cold-booting the ldoio0/1 regulators are always off / the
gpios are always at tristate. But when re-booting from android these
are sometimes on. Disable them at axp_init time (iow as early as possible)
to remove this difference between a cold boot and a reboot.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/drivers/power/axp209.c b/drivers/power/axp209.c
index fc162a1..731b75e 100644
--- a/drivers/power/axp209.c
+++ b/drivers/power/axp209.c
@@ -167,6 +167,22 @@
return rc;
}
+ /*
+ * Turn off LDOIO regulators / tri-state GPIO pins, when rebooting
+ * from android these are sometimes on.
+ */
+ rc = pmic_bus_write(AXP_GPIO0_CTRL, AXP_GPIO_CTRL_INPUT);
+ if (rc)
+ return rc;
+
+ rc = pmic_bus_write(AXP_GPIO1_CTRL, AXP_GPIO_CTRL_INPUT);
+ if (rc)
+ return rc;
+
+ rc = pmic_bus_write(AXP_GPIO2_CTRL, AXP_GPIO_CTRL_INPUT);
+ if (rc)
+ return rc;
+
return 0;
}