bcm63xx/u-boot/drivers/power/Kconfig, branch master

power: axp209: Limit inrush current for broken boards

2018-12-07T16:54:33Z

Some boards feature a capacitance on LDO3's output that is too large, causing inrush currents which as a result, shut down the AXP209. This has been reported before, without knowing the actual cause. A fix appeared to be done with commit 0e6e34ac8dbb ("sunxi: Olimex A20 boards: Enable LDO3 and LDO4 regulators"). The description there is a bit misleading, the kernel does not hang during AXP209 initialization, the PMIC shuts down, causing voltages to drop and thus the whole system freezes. While the AXP209 does have the ability to ramp up the voltage slowly, to reduce these inrush currents, the voltage rate control (VRC) however is not applicable when switching on the LDO3 output. Only when going from an enabled lower voltage setting, to a higher voltage setting is the VRC in effect. To work around this problem, we set LDO3 to the lowest possible setting of 0.7 V if it was not yet enabled, and then let the VRC (if enabled) do its thing. It should be noted, that for some undocumented reason, there is a short delay needed between setting the LDO3 voltage register and enabling the power. One would expect that this delay ought to be just after enabling the output power at 0.7 V, but this did not work. Signed-off-by: Olliver Schinagl Signed-off-by: Priit Laes Acked-by: Maxime Ripard

power: axp209: Add support for voltage rate control on LDO3

2018-12-07T16:54:33Z

The AXP209 LDO3 regulator supports voltage rate control, or can set a slew rate. This allows for the power to gradually rise up to the desired voltage, instead of spiking up as fast as possible. Reason to have this can be to reduce the inrush currents for example. There are 3 slopes to choose from, the default, 'none' is a voltage rise of 0.0167 V/uS, a 1.6 mV/uS and a 0.8 mV/uS voltage rise. In ideal world (where vendors follow the recommended design guidelines) this setting should not be enabled by default. Unless of course AXP209 crashes instead of reporting overcurrent condition as it normally should do in this case. Signed-off-by: Olliver Schinagl Signed-off-by: Priit Laes Acked-by: Maxime Ripard

sunxi: Add AXP_PMIC_BUS kconfig entry

2018-03-19T10:07:20Z

Add simple and meaningful kconfig option for pmic_bus.c instead of using MACH type on Makefile. Signed-off-by: Jagan Teki Acked-by: Maxime Ripard

power: twl4030: Add imply CMD_POWEROFF when TWL4030 is enabled

2017-05-15T17:00:27Z

Now that CMD_POWEROFF can turn off the twl4030, let's imply that just incase someone wants to disable it. Signed-off-by: Adam Ford Reviewed-by: Tom Rini

power: twl4030: Move CONFIG_TWL4030_POWER to Kconfig

2017-05-10T00:35:38Z

As requested, I added the CONFIG_TWL4030_POWER to Kconfig and made it the implied default when selecting OMAP34XX as a platform. Signed-off-by: Adam Ford Reviewed-by: Simon Glass

sunxi: Enable AXP221s in I2C mode with the R40 SoC

2017-04-20T11:30:00Z

The R40 SoC uses the AXP221s in I2C mode to supply power. Some regulator's common usages have changed, and also the recommended voltage for existing usages have changed. Update the defaults to match. Signed-off-by: Chen-Yu Tsai Acked-by: Maxime Ripard

sunxi: prepare for sharing MACH_SUN8I_H3 config symbol

2017-04-05T09:33:17Z

The Allwinner H5 is very close to the H3 SoC, but has ARMv8 cores. To allow sharing the clocks, GPIO and driver code easily, create an architecture agnostic MACH_SUNXI_H3_H5 Kconfig symbol. Rename the existing symbol to MACH_SUNXI_H3_H5 where code is shared and let it be selected by a new shared Kconfig option. Signed-off-by: Andre Przywara Acked-by: Maxime Ripard

kconfig: use bool instead of boolean for type definition attributes

2016-08-12T13:23:49Z

Linux stopped the use of keyword 'boolean' in Kconfig. Refer to commit 6341e62b212a2541efb0160c470e90bd226d5496 ("kconfig: use bool instead of boolean for type definition attributes") in Linux Kernel. Signed-off-by: Masahiro Yamada

Add a power domain framework/uclass

2016-07-27T22:29:56Z

Many SoCs allow power to be applied to or removed from portions of the SoC (power domains). This may be used to save power. This API provides the means to control such power management hardware. Signed-off-by: Stephen Warren Acked-by: Simon Glass

sunxi: power: add AXP809 support

2016-05-25T15:52:39Z

The A80 uses the AXP809 as its primary PMIC. Signed-off-by: Chen-Yu Tsai Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede