diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2016-09-12 09:52:52 +0200 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2016-09-17 14:37:39 +0200 |
| commit | 253e62bf4b118d38a9e4a396b68fac61dcae7bbc (patch) | |
| tree | 7d84055ccd91417823986e1cff30c346709141f8 /drivers/power | |
| parent | 8cbb389bb3da80cbf8911f8386cbff92c6a78afe (diff) | |
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>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/axp209.c | 16 | ||||
| -rw-r--r-- | drivers/power/axp221.c | 12 |
2 files changed, 28 insertions, 0 deletions
diff --git a/drivers/power/axp209.c b/drivers/power/axp209.c index fc162a149e..731b75e50a 100644 --- a/drivers/power/axp209.c +++ b/drivers/power/axp209.c @@ -167,6 +167,22 @@ int axp_init(void) 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; } diff --git a/drivers/power/axp221.c b/drivers/power/axp221.c index 727ab09806..109d3f4686 100644 --- a/drivers/power/axp221.c +++ b/drivers/power/axp221.c @@ -223,6 +223,18 @@ int axp_init(void) 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; } |