diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2014-12-13 12:40:45 +0100 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2015-01-14 14:56:36 +0100 |
| commit | f70444980b23f5f52025aa6b7d22233312dea136 (patch) | |
| tree | 5907ec0bd5e369f83cdf8bbb689be0b0ed64733a /drivers | |
| parent | bdcdf84631746f9569a4d0b0805750574c7a353a (diff) | |
sunxi: axp221: Add Kconfig help and sane defaults for typical ldo usage
Some of the ldo-s of the axp221 are used in the same way on most boards, add
comments to the Kconfig help text to reflect this, and give them defaults
matching their typical usage.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/power/Kconfig | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig index 7373a793e2..af66887129 100644 --- a/drivers/power/Kconfig +++ b/drivers/power/Kconfig @@ -12,7 +12,9 @@ config AXP221_DLDO1_VOLT default -1 ---help--- Set the voltage (mV) to program the axp221 dldo1 at, set to -1 to - disable dldo1. + disable dldo1. On sun6i (A31) boards with ethernet this is often used + to power the ethernet phy. On sun8i (A23) boards this is often used to + power the wifi. config AXP221_DLDO4_VOLT int "axp221 dldo4 voltage" @@ -28,20 +30,26 @@ config AXP221_ALDO1_VOLT default -1 ---help--- Set the voltage (mV) to program the axp221 aldo1 at, set to -1 to - disable aldo1. + disable aldo1. On sun6i (A31) boards which have a wifi module this is + often used to power the wifi module. config AXP221_ALDO2_VOLT int "axp221 aldo2 voltage" depends on AXP221_POWER - default -1 + default 1800 if MACH_SUN6I + default 2500 if MACH_SUN8I ---help--- Set the voltage (mV) to program the axp221 aldo2 at, set to -1 to - disable aldo2. + disable aldo2. On sun6i (A31) boards this is typically connected to + VCC-PM, which powers the port M gpios, and should be set to 1.8V. + On sun8i (A23) this is typically connected to VDD-DLL and must be + set to 2.5V. config AXP221_ALDO3_VOLT int "axp221 aldo3 voltage" depends on AXP221_POWER - default -1 + default 3000 ---help--- Set the voltage (mV) to program the axp221 aldo3 at, set to -1 to - disable aldo3. + disable aldo3. This is typically connected to VCC-PLL and AVCC and + must be set to 3V. |