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/axp221.c b/drivers/power/axp221.c
index 727ab09..109d3f4 100644
--- a/drivers/power/axp221.c
+++ b/drivers/power/axp221.c
@@ -223,6 +223,18 @@
if (!(axp_chip_id == 0x6 || axp_chip_id == 0x7 || axp_chip_id == 0x17))
return -ENODEV;
+ /*
+ * Turn off LDOIO regulators / tri-state GPIO pins, when rebooting
+ * from android these are sometimes on.
+ */
+ ret = pmic_bus_write(AXP_GPIO0_CTRL, AXP_GPIO_CTRL_INPUT);
+ if (ret)
+ return ret;
+
+ ret = pmic_bus_write(AXP_GPIO1_CTRL, AXP_GPIO_CTRL_INPUT);
+ if (ret)
+ return ret;
+
return 0;
}