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 <hdego...@redhat.com>
---
drivers/power/axp209.c | 10 +++++++++-
drivers/power/axp221.c | 9 ++++++++-
2 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/drivers/power/axp209.c b/drivers/power/axp209.c
index fc162a1..998e114 100644
--- a/drivers/power/axp209.c
+++ b/drivers/power/axp209.c
@@ -167,7 +167,15 @@ int axp_init(void)
return rc;
}
- return 0;
+ /*
+ * 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);
+ rc |= pmic_bus_write(AXP_GPIO1_CTRL, AXP_GPIO_CTRL_INPUT);
+ rc |= pmic_bus_write(AXP_GPIO2_CTRL, AXP_GPIO_CTRL_INPUT);
+
+ return rc;
}
int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
diff --git a/drivers/power/axp221.c b/drivers/power/axp221.c
index 727ab09..0d14211 100644
--- a/drivers/power/axp221.c
+++ b/drivers/power/axp221.c
@@ -223,7 +223,14 @@ int axp_init(void)
if (!(axp_chip_id == 0x6 || axp_chip_id == 0x7 || axp_chip_id == 0x17))
return -ENODEV;
- return 0;
+ /*
+ * 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);
+ ret |= pmic_bus_write(AXP_GPIO1_CTRL, AXP_GPIO_CTRL_INPUT);
+
+ return ret;
}
int axp_get_sid(unsigned int *sid)
--
2.9.3
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