Hi Mark, On Fri, Mar 25, 2016 at 06:20:17PM +0000, Mark Brown wrote: > On Fri, Mar 25, 2016 at 07:22:45PM +0200, Ivaylo Dimitrov wrote: > > > On Nokia N900 regulators are left in the mode last set by the bootloader or > > by the stock kernel, depends on whether it is power-on or reboot from stock > > kernel to mainline. That leads to problem with devices connected to vmmc2 > > regulator - when the device is rebooted from stock kernel vmmc2 is left in > > "sleep" mode (REGULATOR_STATUS_STANDBY in terms of regulator framework) and > > as noone in mainline kernel switches vmmc2 regulator to normal > > (REGULATOR_STATUS_NORMAL) mode, devices supplied by it does not get enough > > power to operate normally. > > Then there is a constraint that the regulators must be in normal mode > and this needs to be expressed in the machine constraints. As in adding "regulator-initial-mode = <TWL4030_OPMODE_NORMAL>;" to the regulator's DT node (and providing an of_map_mode method in the twl-regulator driver)? -- Sebastian
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